Ryo YAMAMOTO
| Department of Informatics | Associate Professor |
| Cluster II (Emerging Multi-interdisciplinary Engineering) | Associate Professor |
| Meta-Networking Research Center | Associate Professor |
Researcher Information
Degree
Research Keyword
Field Of Study
Career
Educational Background
- 01 Apr. 2009 - 31 Mar. 2012
Waseda University, Graduate School of Global Information and Telecommunication Studies, Japan - 01 Apr. 2007 - 17 Mar. 2009
Shibaura Institute of Technology, Graduate School of Engineering, Division of Electrical Engineering and Computer Science, Japan - 01 Apr. 2003 - 16 Mar. 2007
Shibaura Institute of Technology, College of Systems Engineering, Department of Electronic Information Systems｀, Japan
Member History
- Jun. 2024 - Present
副編集長, 電子情報通信学会通信ソサイエティマガジン誌, Society - Jun. 2022 - Present
専門委員, 電子情報通信学会ネットワークシステム研究専門委員会, Society - May 2010 - Present
専門委員, 電子情報通信学会コミュニケーションクオリティ研究専門委員会, Society - Jun. 2023 - May 2025
幹事, 電子情報通信学会情報通信マネジメント研究専門委員会, Society - Jun. 2021 - May 2025
編集委員, 電子情報通信学会通信ソサイエティ英文レター誌編集委員会, Society - Jun. 2022 - Jun. 2023
幹事補佐, 電子情報通信学会情報通信マネジメント研究専門委員会, Society - May 2020 - May 2022
会員事業企画幹事, 電子情報通信学会通信ソサイエティ会員事業企画幹事, Society - 01 Jun. 2021
電子情報通信学会ComEX編集委員, Society - 28 May 2017 - 28 May 2019
幹事補佐, 電子情報通信学会コミュニケーションクオリティ研究専門委員会, Society - May 2019
幹事, 電子情報通信学会アクレディテーション委員会, Society - May 2019
編集委員, 電子情報通信学会通信ソサイエティマガジン編集委員会 - Sep. 2017
幹事補佐, 電子情報通信学会アクレディテーション委員会, Society - Apr. 2016
委員, 電子情報通信学会アクレディテーション委員会, Society
Research Activity Information
Award
- Mar. 2024
電子情報通信学会情報通信マネジメント研究専門委員会
無線ネットワーク資源利用効率向上のための仮想ネットワーク埋込手法
情報通信マネジメント研究賞, 櫛山ライハーン純;山本 嶺;大坐畠 智 - Jan. 2024
The 2024 IEEE International Conference on Consumer Electronics
Selecting Nodes to Operate Relay Function for UAV Routing in Wireless Multi-Hop Network
Best Regional Paper Award, Shuto Ohkawa;Kiyoshi Ueda;Takumi Miyoshi;Taku Yamazaki;Ryo Yamamoto - Oct. 2023
電子情報通信学会情報ネットワーク研究専門委員会
Federated Learningのための複数車載カメラによる物体追跡を用いたラベル付け
最優秀発表賞, 中濱雄喜;大坐畠 智;山本 嶺 - Sep. 2023
電子情報通信学会通信ソサイエティ
活動功労賞 - Aug. 2022
IEICE
ComEX Top Downloaded Letter Award
Official journal - Mar. 2022
電子情報通信学会通信ソサイエティ情報マネジメント研究専門委員会
情報マネジメント研究専門委員会 活動功労賞
Japan society - Mar. 2021
電子情報通信学会通信ソサイエティ情報マネジメント研究専門委員会
情報マネジメント研究専門委員会 活動功労賞
Japan society - Sep. 2020
電子情報通信学会通信ソサイエティ
活動功労賞
Japan society - Sep. 2019
電子情報通信学会通信ソサイエティ
活動功労賞
Japan society - Mar. 2018
電子情報通信学会通信ソサイエティ情報マネジメント研究専門委員会
情報マネジメント研究専門委員会 活動功労賞
Japan society - Sep. 2017
電子情報通信学会通信ソサイエティ
活動功労賞
Japan society - Mar. 2015
電子情報通信学会通信ソサイエティ情報マネジメント研究専門委員会
情報マネジメント研究専門委員会 活動功労賞
Japan society - Dec. 2014
ASON Best Paper
International society - Mar. 2014
IEICE Network System Technical Comittee
Network System Research Award
Japan society - Mar. 2010
IEICE
Young Researcher's Award
International academic award
Paper
- Auto Annotation using Object Tracking with Multiple in-vehicle Cameras for Federated Learning
Yuuki Nakahama; Satoshi Ohzahata; Ryo Yamamoto
2024 International Conference on Artificial Intelligence in Information and Communication (ICAIIC), IEEE, 19 Feb. 2024, Peer-reviwed
International conference proceedings, English - Deep Learning-Based No-Reference Video Streaming QoE Estimation Using WebRTC Statistics
Keisuke Sakakibara; Satoshi Ohzahata; Ryo Yamamoto
2024 International Conference on Artificial Intelligence in Information and Communication (ICAIIC), IEEE, 19 Feb. 2024, Peer-reviwed
International conference proceedings, English - Backoff-based Opportunistic Routing with Concurrent Transmission
Taku Yamazaki; Tomoyuki Yokoyama; Takumi Miyoshi; Ryo Yamamoto
Last, 2024 IEEE 21st Consumer Communications & Networking Conference (CCNC), Jan. 2024, Peer-reviwed
International conference proceedings, English - Detecting Zero-day Attack with Federated Learning using Autonomously Extracted Anomalies in IoT
Takahiro Ohtani; Ryo Yamamoto; Satoshi Ohzahata
Corresponding, 2024 IEEE 21st Consumer Communications & Networking Conference (CCNC), Jan. 2024, Peer-reviwed
International conference proceedings, English - Accelerating Feedback Control for QoE Fairness in Adaptive Video Streaming over ICN
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto
Last, 2024 IEEE 21st Consumer Communications & Networking Conference (CCNC), Jan. 2024, Peer-reviwed
International conference proceedings, English - Selecting Nodes to Operate Relay Function for UAV Routing in Wireless Multi-Hop Network
Shuto Ohkawa; Kiyoshi Ueda; Takumi MIyoshi; Taku Yamazaki; Ryo Yamamoto
Last, 2024 IEEE International Conference on Consumer Electronics, Jan. 2024, Peer-reviwed
International conference proceedings, English - A Method for Constructing Collision Avoidance Route for Multiple UAVs Using AODV-Based Link Hierarchization
Shuto Ohkawa; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
Proceedings of ICCE-Asia, Oct. 2023, Peer-reviwed
International conference proceedings, English - AODV-based routing methods for UAVs travel time and safety
Yuto Kokubun; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
IEICE Communications Express, Institute of Electronics, Information and Communications Engineers (IEICE), 12, 4, 157-163, 01 Apr. 2023, Peer-reviwed
Scientific journal - VORTEX: Network-Driven Opportunistic Routing for Ad Hoc Networks
Ryo Yamamoto; Taku Yamazaki; Satoshi Ohzahata
Lead, Sensors, MDPI AG, 23, 6, 2893-2893, 07 Mar. 2023, Peer-reviwed, The potential of ad hoc networks, which enable flexible and dynamic network establishment only by mobile terminals equipped with wireless communication devices, has recently attracted attention for the coming IoT era. Although the nature of ad hoc networks shows the advantages of their autonomous and distributed network management, a manifestation of drawbacks owing to the nature of wireless communication and the mobility of terminals are inevitable. Many routing protocols have already been proposed to address the issues by adapting to nature and achieving a certain level of improvement. However, the routing protocols still suffer from difficulties in information collection for routing and adaptive route management during communication. Moreover, there is another issue that end pair-based routing procedures prevent other end pairs from reusing the routing information effectively. To address the drawbacks of conventional routing protocols, this paper proposes VORTEX, a novel routing protocol that employs an opportunistic routing strategy using hierarchization. One of the characteristic features of VORTEX is its network-driven opportunistic forwarding, in which packets travel toward destination terminals using hierarchy as a guide without conventional route discovery procedures. Moreover, another characteristic feature of VORTEX is that the hierarchical structure also contributes to adapting to communication environment changes in an autonomous manner. In other words, VORTEX enables flexible network-wide information-based routing only with the locally collected information. The simulation results show that the proposed VORTEX could provide better service quality and reliability with improved efficiency compared to the conventional routing protocols. Furthermore, the most significant contribution is not only in the communication performance but also VORTEX omits route discovery or route maintenance from routing protocols, and formed networks themselves have a function to deliver packets toward destination terminals.
Scientific journal - Networking Data and Intelligent Management in the Post-COVID19 Era: A Report on APNOMS 2021
Chen, J.-J.; Yamamoto, R.; Kim, K.; Huang, J.-L.; Kinoshita, K.; Seok, W.; Yen, L.-H.
Journal of Network and Systems Management, Springer, 31, 2, 1-11, 01 Feb. 2023, Peer-reviwed, True
Scientific journal, English - Active Intrusion Detection with Periodical Probing for IoT Devices
Ryo Yamamoto; Takahiro Ohtani; Satoshi Ohzahata
2023 IEEE 20th Consumer Communications & Networking Conference (CCNC), IEEE, 08 Jan. 2023, Peer-reviwed
International conference proceedings, English - TCP Congestion Control Algorithm Estimation by Deep Recurrent Neural Network and Its Application to Web Servers on Internet
Takuya Sawada; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
International Journal on Advances in Networks and Services, 16, 1&2, 27-35, 2023, Peer-reviwed
Scientific journal, English - Methods for constructing collision avoidance route for multiple unmanned aerial vehicles using OLSR-based link hierarchization
Haruki Gunji; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
IEICE Communications Express, Institute of Electronics, Information and Communications Engineers (IEICE), 12, 1, 7-12, 01 Jan. 2023, Peer-reviwed
Scientific journal - VNE-HAGBE: A Hybrid Approach to Improve VNR Request Acceptance Rate for Wireless Virtual Network Embedding
Raihaanjun Kushiyama; Ryo Yamamoto; Satoshi Ohzahata
2022 23rd Asia-Pacific Network Operations and Management Symposium (APNOMS), IEEE, 1-4, 28 Sep. 2022, Peer-reviwed
International conference proceedings, English - A Method for Constructing Collision Avoidance Route for Multiple UAVs Using OLSR-Based Link Hierarchization
Haruki Gunji; Kiyoshi Ueda; Takumi Miyoshi; Taku Yamazaki; Ryo Yamamoto
Proc. the 10th International Conference on Computer and Communications Management (ICCCM ’22), 169-174, Jul. 2022, Peer-reviwed
International conference proceedings, English - Reactive Route Construction for UAV Delivery considering Travel Time and Safety using Wireless Multi-hop Network
Yuto Kokubun; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
IEICE Communications Express, 22 Apr. 2022, Peer-reviwed - Proactive Route Construction for UAV Delivery considering Distance and Safety using Wireless Multi-hop Network
Haruki Gunji; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
IEICE Communications Express, 22 Apr. 2022, Peer-reviwed - Indoor Positioning Using BLE Beacons for Care History Collection
Tatsumi Nagai; Kiyoshi Ueda; Takumi Miyoshi; Taku Yamazaki; Ryo Yamamoto
2022 10th International Conference on Information and Education Technology (ICIET 2022), 420-424, 10 Apr. 2022, Peer-reviwed - A Link State Routing Method for CCN with Blockchain
Shuichi Tokunaga; Satoshi Ohzahata; Ryo Yamamoto
Ninth International Symposium on Computing and Networking Workshops (CANDARW) 2021, 49-55, Nov. 2021, Peer-reviwed
International conference proceedings, English - A Study on Effect of Advertisement Insertion to QoE in Video Streaming Services
Yukiya Kunugi; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
IEEE International Conference on Consumer Electronics – Taiwan (ICCE-TW) 2021, Sep. 2021, Peer-reviwed
International conference proceedings, English - Delay-Based Task Offloading for Fog Computing in IoT Networks
Takamichi Yamamoto; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
IEEE International Conference on Consumer Electronics – Taiwan (ICCE-TW) 2021, Sep. 2021, Peer-reviwed
International conference proceedings, English - On Treating Asymmetric Links in Backoff-based Opportunistic Routing: Problem and Solution
Eri Hosonuma; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Thomas Silverston
IEICE Communications Express, 10, 8, 538-543, Aug. 2021, Peer-reviwed
Scientific journal, English - Yukiya Kunugi, Ryo Yamamoto, Satoshi Ohzahata, Toshihiko Kato
A Study on; effect of Advertisement; Insertion to; QoE in Video; Streaming Services
IEEE International Conference on Consumer Electronics -Taiwan (ICCE-TW) 2021, 1-2, Jun. 2021, Peer-reviwed
International conference proceedings, English - Takamichi Yamamoto, Ryo Yamamoto, Satoshi Ohzahata, Toshihiko Kato
Delay-based Task; Offloading for Fog Computing; in IoT Networks
IEEE International Conference on Consumer Electronics -Taiwan (ICCE-TW) 2021, 1-2, Jun. 2021, Peer-reviwed
International conference proceedings, English - Handling Asymmetric Links in Backoff-based Opportunistic Routing
Eri Hosonuma; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Thomas Silverston
2020 International Conference on Emerging Technologies for Communications, 1-1, Dec. 2020, Peer-reviwed
International conference proceedings, English - Improving QoE Fairness Using the IEEE 802.11e Priority Control Mechanism
Kosuke Shikama; Takahiro Matsuda; Takefumi Hiraguri; Takanori Hayashi; Ryo Yamamoto
IEEE International Conference on Consumer Electronics -Taiwan (ICCE-TW) 2020, Sep. 2020, Peer-reviwed
International conference proceedings, English - A Content Registration Method for CCN Routers with Blockchain
Shuichi Tokunaga; Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
IEEE International Conference on Consumer Electronics -Taiwan (ICCE-TW) 2020, Sep. 2020, Peer-reviwed
International conference proceedings, English - mpCUBIC: A CUBIC-like Congestion Control Algorithm for Multipath TCP
Toshihiko Kato; Shiho Haruyama; Ryo Yamamoto; Satoshi Ohzahata
World Conference on Information Systems and Technologies (WorldCIST 2020), 306-317, Apr. 2020, Peer-reviwed
International conference proceedings, English - Estimating TCP Congestion Control Algorithms from Passively Collected Bidirectional Packet Log Using Recurrent Neural Network
Naoki Ohzeki; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
IPSJ Journal, 61, 2, 287-296, Feb. 2020, Peer-reviwed
Scientific journal, Japanese - A Container-based Content Delivery Method for Edge Cloud over Wide Area Network
Kento Nakanishi; Fumiya Suzuki; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
The 34th International Conference on Information Networking (ICOIN 2020), 568-573, Jan. 2020, Peer-reviwed
International conference proceedings, English - Throughput Enhancement with Overlay Network Virtualization Using Commodity Devices
Hiroki Kawahara; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
12th IEEE/ACM International Conference on Utility and Cloud Computing (UCC 2019), 147-148, Dec. 2019, Peer-reviwed
International conference proceedings, English - A congestion avoidance for adaptive streaming over ICN using bitrate feedback from in-network nodes
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
ASON 2019, **-**, Nov. 2019, Peer-reviwed
International conference proceedings, English - Adaptive Contents Dissemination Method for Floating Contents
Ryo Yamamoto; Atsufumi Kashima; Taku Yamazaki; Yoshiaki Tanaka
IEEE 90th Vehicular Technology Conference, 1-5, 24 Sep. 2019, Peer-reviwed
International conference proceedings, English - Proposal and performance evaluation of hybrid routing mechanism for NDN ad hoc networks combining proactive and reactive approaches
Ngo, Q.M.; Yamamoto, R.; Ohzahata, S.; Kato, T.
IEICE Transactions on Information and Systems, E102D, 9, 1784-1796, 01 Sep. 2019, Peer-reviwed
Scientific journal, English - EXPERIMENTAL ANALYSIS OF MPTCP CONGESTION CONTROL ALGORITHMS; LIA, OLIA AND BALIA
Toshihiko Kato; Adhikari Diwakar; Ryo Yamamoto; Satoshi Ohzahata; Nobuo Suzuki
Proceedings of the International Conferences Big Data Analytics, Data Mining and Computational Intelligence 2019; and Theory and Practice in Modern Computing 2019, IADIS Press, 16 Jul. 2019
International conference proceedings - A Study on Round-trip Time Estimation from Unidirectional Packet Traces Using Different TCP Congestion Control Algorithms
Toshihiko Kato; Xiaofan Yan; Ryo Yamamoto; Satoshi Ohzahata
International Journal On Advances in Networks and Services, 12, 1&2, 1-9, Jul. 2019, Peer-reviwed
Scientific journal, English - Path Aggregation Method Based on Inter-Vehicle Distance in Hierarchical VANET
Mitsuhiro Nakamura; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
34th International Technical Conference on Circuit/System, Computer and Communications, 0-0, Jun. 2019, Peer-reviwed
International conference proceedings, English - Opportunistic Routing for Heterogeneous IoT Networks
Yasushi Okamura; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
IEEE International Conference on Consumer Electronics -Taiwan (ICCE-TW) 2019, 0-0, May 2019, Peer-reviwed
International conference proceedings, English - An Efficient Dynamic Bandwidth Reservation Method in Content-Centric Network
Fumiya Suzuki; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
IEEE International Conference on Consumer Electronics -Taiwan (ICCE-TW) 2019, 0-0, May 2019, Peer-reviwed
International conference proceedings, English - Analysis of Performance Degradation of TCP Reno over WLAN Caused by Access Point Scanning
Toshihiko Kato; Sota Tasaki; Ryo Yamamoto; Satoshi Ohzahata
World Conference on Information Systems and Technologies (WorldCIST’19), 385-395, Apr. 2019, Peer-reviwed
International conference proceedings, English - Performance Evaluation of MultiPath TCP Congestion Control
Toshihiko Kato; Adhikari Diwakar; Ryo Yamamoto; Satoshi Ohzahata; Nobuo Suzuki
The Eighteenth International Conference on Networks, 19-24, Mar. 2019, Peer-reviwed
International conference proceedings, English - Inferring TCP Congestion Control Algorithms Passively by Focusing on Congestion Window and Its Increment
Toshihiko Kato; Atsushi Oda; Xiaofan Yan; Ryo Yamamoto; Satoshi Ohzahata
IPSJ Journal, 60, 2, 479-490, Feb. 2019, Peer-reviwed
Scientific journal, Japanese - A Deep Learning Based Social-aware D2D Peer Discovery Mechanism
Yu Long; Ryo Yamamoto; Taku Yamazaki; Yoshiaki Tanaka
21st International Conference on Advanced Communications Technology, 0-0, Feb. 2019, Peer-reviwed
International conference proceedings, English - Estimating TCP Congestion Control Algorithms from Passively Collected Packet Traces using Recurrent Neural Network
Naoki Ohzeki; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Proceedings of the 16th International Joint Conference on e-Business and Telecommunications, SCITEPRESS - Science and Technology Publications, 19-24, 2019, Peer-reviwed
International conference proceedings, English - How to Implement NDN MANET over ndnSIM Simulator
Toshihiko Kato; Ngo Quang Minh; Ryo Yamamoto; Satoshi Ohzahata
IEEE 4th International Conference on Computer and Communications 2018, 451-456, Dec. 2018, Peer-reviwed
International conference proceedings, English - Implementation of Eavesdropping Protection Method over MPTCP Using Data Scrambling and Path Dispersion
Toshihiko Kato; Shihan Cheng; Ryo Yamamoto; Satoshi Ohzahata; Nobuo Suzuki
The Twelfth International Conference on Emerging Security Information, Systems and Technologies, 108-113, Sep. 2018, Peer-reviwed
International conference proceedings, English - ACO-Inspired Energy-Aware Routing Algorithm for Wireless Sensor Networks
Ryo Yamamoto; Seira Nishibu; Taku Yamazaki; Yasushi Okamura; Yoshiaki Tanaka
IEICE Information and Communication Technology Forum 2018, 0-0, 10 Jul. 2018, Peer-reviwed
International conference proceedings, English - Adaptive Anchor Zone Adjustment Based on Terminal Encounter Rate in Floating Contents
Atsufumi Kashima; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
IEICE Information and Communication Technology Forum 2018, 0-0, 10 Jul. 2018, Peer-reviwed
International conference proceedings, English - IEEE802.11ac無線LANのMU-MIMOダウンリンク伝送における動的フレームアグリゲーションサイズ選択によるスループット改善手法
森山 友和; 山本 嶺; 大坐畠 智; 加藤 聰彦
電子情報通信学会論文誌 B, J101-B, 7, 1-12, Jul. 2018, Peer-reviwed
Scientific journal, Japanese - IEEE802.11ac無線LANのMU-MIMOダウンリンク伝送における動的フレームアグリゲーションサイズ選択によるスループット改善手法
森山友和; 山本嶺; 大坐畠智; 加藤聰彦
電子情報通信学会論文誌 B, 電子情報通信学会, J101-B, 7, 558-569, 01 Jul. 2018, Peer-reviwed
Scientific journal, Japanese - Experimental Analysis of Spurious Timeout Detection Methods with LTE Handover Emulation
Toshihiko Kato; Masahito Moriyama; Ryo Yamamoto; Satoshi Ohzahata
Theory and Practice in Modern Computing 2018, 105-112, Jul. 2018, Peer-reviwed
International conference proceedings, English - Applying Lomb Periodogram to Round Trip Time Estimation from Unidirectional Packet Traces with Different TCP Congestion Controls
Toshihiko Kato; Xiaofan Yan; Ryo Yamamoto; Satoshi Ohzahata
The Thirteenth Int. Conf. on Internet Monitoring and Protection, 1-6, Jul. 2018, Peer-reviwed
International conference proceedings, English - TCP Congestion Control over IEEE 802.11 Wireless LANs based on k-means Clustering Focusing on Congestion Window Size and Round Trip Time
Tomokazu Moriyama; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
9th International Conference on Data Communiction Network, 25-32, Jul. 2018, Peer-reviwed
International conference proceedings, English - Experimental Analysis and Resolution Proposal on Performance Degradation of TCP over IEEE 802.11n Wireless LAN Caused by Access Point Scanning
Toshihiko Kato; Kento Kobayashi; Sota Tasaki; Masataka Nomoto; Ryo Yamamoto; Satoshi Ohzahata
International Journal on Advances in Telecommunications, 11, 1&2, 1-10, Jun. 2018, Peer-reviwed
Scientific journal, English - Proposal and Performance Analysis of Hybrid NDN Based Ad Hoc Routing Combining Proactive and Reactive Mechanisms
Ngo Quang Minh; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
International Journal on Advances in Networks and Services, 11, 1&2, 1-10, Jun. 2018, Peer-reviwed
Scientific journal, English - Proposal and Study on Implementation of Data Eavesdropping Protection Method over Multipath TCP Communication Using Data Scrambling and Path Dispersion
Toshihiko Kato; Shihan Cheng; Ryo Yamamoto; Satoshi Ohzahata; Nobuo Suzuki
International Journal on Advances in Security, 11, 1&2, 1-9, Jun. 2018, Peer-reviwed
Scientific journal, English - A Study On How Coarse-grained Clock System Influences NDN Rate-based Congestion Control
Toshihiko Kato; Kazuki Osada; Ryo Yamamoto; Satoshi Ohzahata
The Seventeenth International Conference on Networks 2018, 35-40, Apr. 2018, Peer-reviwed
International conference proceedings, English - Adaptive Geo-Fencing with Local Storage Architecture on Ad Hoc Networks
Yamamoto, Ryo; Ohzahata, Satoshi; Kato, Toshihiko; IEEE
2018 International Conference on Electronics, Information, and Communication (Iceic), 125-128, 25 Jan. 2018, Peer-reviwed
International conference proceedings, English - An Adaptive BandwidthReservation Method for a Content-Centric Network
Tomoharu Endo; Atsuko Yokotani; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Proc. of IEEE COMPSAC 2018 Workshop IWFIT, 6-pages, 2018, Peer-reviwed
International conference proceedings, English - Identification of TCP Congestion Control Algorithms from Unidirectional Packet Traces
Toshihiko Kato; Xiaofan Yan; Ryo Yamamoto; Satoshi Ohzahata
Proceedings of 2nd International Conference on Communication and Network Technology (ICCNT 2018), 1-6, 2018, Peer-reviwed
International conference proceedings, English - How insufficient send socket buffer affects MPTCP performance over paths with different delay
Toshihiko Kato; Adhikari Diwakar; Ryo Yamamoto; Satoshi Ohzahata; Nobuo Suzuki
Advances in Intelligent Systems and Computing, Springer Verlag, 746, 614-624, 2018, Peer-reviwed, Recently, the multipath transport protocol such as Multipath TCP becomes increasingly important. It allows more than one TCP connections via different paths to compose one Multipath TCP communication. However, it has some problems when those paths have different delay. Especially, the limited buffer space at either sender or receiver may degrade the throughput due to head-of-line blocking. Our previous paper pointed out that insufficient send socket buffer and receive socket buffer provide different situations of performance degradation, and that insufficient send socket buffer gives poorer throughput. This paper extends the performance analysis of our previous paper in the conditions with various combinations of send socket buffer size and transmission delay. It gives more detailed analysis using Multipath TCP level sequence number and congestion window size, and suggests the reasons for performance degradation.
International conference proceedings, English - Performance Evaluation of TCP Spurious Timeout Detection Methods Under Delay Spike and Packet Loss Emulating LTE Handover
Toshihiko Kato; Masatoshi Moriyama; Ryo Yamamoto; Satoshi Ohzahata
IADIS International Journal on Computer Science and Information Systems, 13, 2, 16-29, 2018, Peer-reviwed
Scientific journal, English - Impacts of System Clock Granularity on Performance of NDN Rate-based Congestion Control
Toshihiko Kato; Kazuki Osada; Ryo Yamamoto; Satoshi Ohzahata
International Journal on Advances in Telecommunications, 11, 3&4, 135-143, 2018, Peer-reviwed
Scientific journal, English - Protecting Eavesdropping over Multipath TCP Communication Based on Not-Every-Not-Any Protection
Toshihiko Kato; Shihan Cheng; Ryo Yamamoto; Satoshi Ohzahata; Nobuo Suzuki
The Eleventh International Conference on Emerging Security Information, Systems and Technologies, 87-92, Sep. 2017, Peer-reviwed
International conference proceedings, English - A QoS aware ad hoc multicast by combining TDMA and IEEE 802.11 DCF
Jing Lin; Yamamoto, R.; Ohzahata, S.; Kato, T.
International Conferences on Computer Graphics, Visualization, Computer, Vision and image Processing 2017 and Big Data Analytics, Data Mining and Computational Intelligence 2017. Proceedings, 204-211, Jul. 2017, Peer-reviwed
Scientific journal, English - Frame Aggregation Size Determination for IEEE 802.11ac WLAN Considering Channel Utilization and Transfer Delay
Tomokazu Moriyama; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
14th International Conference on Wireless Networks and Mobile Systems, 89-94, Jul. 2017, Peer-reviwed
International conference proceedings, English - Well-Timed Secure Handover in LTE Self Organized Network
Nava Krishna Chaitanya Javvaji; Ryo Yamamoto; Yoshiaki Tanaka
32nd International Technical Conference on Circuits/Systems, Computers and Communications, 0-0, Jul. 2017, Peer-reviwed
International conference proceedings, English - Hierarchical Opportunistic Routing with Destination Area Estimation for Ad Hoc Networks
Ryota Kameda; Ryo Yamamoto; Yoshiaki Tanaka
32nd International Technical Conference on Circuits/Systems, Computers and Communications, 0-0, Jul. 2017, Peer-reviwed
International conference proceedings, English - A Routing Protocol Proposal for NDN Based Ad Hoc Networks Combining Proactive and Reactive Routing Mechanisms
Ngo Quang Minh; Yamamoto, Ryo; Ohzahata, Satoshi; Kato, Toshihiko
Thirteenth Advanced International Conference on Telecommunications (Aict 2017), 80-86, Jun. 2017, Peer-reviwed
International conference proceedings, English - A Hierarchical Opportunistic Routing with Moderate Clustering for Ad Hoc Networks
Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E100B, 1, 54-66, Jan. 2017, Peer-reviwed, The self-organizing nature of ad hoc networks is a good aspect in that terminals are not dependent on any infrastructure, that is, networks can be formed with decentralized and autonomous manner according to communication demand. However, this characteristic might affect the performance in terms of stability, reliability and so forth. Moreover, ad hoc networks face a scalability problem, which arise when the number of terminals in a network increases or a physical network domain expands, due to the network capacity limitation caused by the decentralized and the autonomous manner. Regarding this problem, some hierarchical and cluster-based routings have been proposed to effectively manage the networks. In this paper, we apply the concept of hierarchical routing and clustering to opportunistic routing, which can forward packets without using any pre-established path to achieve a path diversity gain with greater reachability. The simulation results show that the proposed method can achieve 110'o higher reliability with a reasonable end-to-end delay in dense environments and 30010 higher in large-scale networks.
Scientific journal, English - PRIOR: Prioritized Forwarding for Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E100B, 1, 28-41, Jan. 2017, Peer-reviwed, In ad hoc networks, broadcast forwarding protocols called OR (opportunistic routing) have been proposed to gain path diversity for higher packet delivery rates and shorter end-to-end delays. In general backoff-based OR protocols, each receiver autonomously makes a forwarding decision by using certain metrics to determine if a random backoff time is to be applied. However, each forwarder candidate must wait for the expiration of the backoff timer before forwarding a packet. Moreover, they cannot gain path diversity if the forwarding path includes local sparse areas, and this degrades performance as it strongly depends on the terminal density. In this paper, we propose a novel OR protocol called PRIOR (prioritized forwarding for opportunistic routing). In PRIOR, a terminal, called a prioritized forwarder and which forwards packets without using a backoff time, is selected from among the neighbours. In addition, PRIOR uses lightweight hop-by-hop retransmission control to mitigate the effect of terminal density. Moreover, we introduce an enhancement to PRIOR to reduce unnecessary forwarding by using an explicit acknowledgement. We evaluate PRIOR in comparison with conventional protocols in computer simulations.
Scientific journal, English - Experimental Analysis on How Access Point Scanning Impacts on TCP Throughput over IEEE802.11n Wireless LAN
Kento Kobayashi; Yoshiki Hashimoto; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Twelfth International Conference on Wireless and Mobile Communications (ICWMC 2016), 115-120, Nov. 2016, Peer-reviwed
International conference proceedings, English - Microscopic approach for experimental analysis of multipath TCP throughput under insufficient send/receive socket buffers
Kato, T.; Tenjin, M.; Yamamoto, R.; Ohzahata, S.; Shinbo, H.
15th International Conference WWW/Internet 2016. Proceedings, 191-199, Oct. 2016, Peer-reviwed
Scientific journal, English - Block-based Transmission with Adaptive Reliability Control for Ad Hoc Networks
Tomoaki Sakaguchi; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
31th International Technical Conference on Circuit/System, Computer and Communications, 403-406, 12 Jul. 2016, Peer-reviwed
International conference proceedings, English - Opportunistic Routing Using Prioritized Forwarders with Retransmission Control
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
IEICE Information and Communication Technology Forum 2016, A1.2, Jul. 2016, Peer-reviwed
International conference proceedings, English - A Study on How to Characterize TCP Congestion Control Algorithms from Unidirectional Packet Traces
Toshihiko Kato; Leelianou Yongxialee; Ryo Yamamoto; Satoshi Ohzahata
The Eleventh International Conference on Internet Monitoring and Protection, 23-28, 22 May 2016, Peer-reviwed
International conference proceedings, English - Forwarding Mechanism Using Prioritized Forwarders for Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
2016 18TH ASIA-PACIFIC NETWORK OPERATIONS AND MANAGEMENT SYMPOSIUM (APNOMS), IEEE, TS8-1, 2016, Peer-reviwed, In ad hoc networks, backoff-based OR (opportunistic routing) protocols, which autonomously selects a forwarder among the potential forwarders based on a random backoff time, have been proposed. However, each potential forwarder must wait for the backoff time to avoid packet collisions among receivers. In addition, the terminal density strongly affects the performance since the backoff-based OR protocols improve the performance by using multiple terminals. In this paper, we propose a novel OR protocol called PRIOR (prioritized forwarding for opportunistic routing). In PRIOR, a terminal called prioritized forwarder, which forwards packets without using a backoff time, is selected among neighbours. In addition, we propose a hop-by-hop retransmission control that performs the retransmission terminal selection on the basis of a neighbour relation with the PFs. Moreover, we introduce an explicit acknowledgement mechanism on the basis of the difference of hop counts to alleviate the bad effect of the retransmission control in dense environments. Finally, we evaluate PRIOR in comparison with conventional backoff-based OR protocols in computer simulation.
International conference proceedings, English - A Hierarchical Opportunistic Routing with Stability Information for Mobile Ad Hoc Networks
Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
PROCEEDINGS OF THE 2016 INTERNATIONAL CONFERENCE ON ADVANCED TECHNOLOGIES FOR COMMUNICATIONS (ATC), IEEE, 43-47, 2016, Peer-reviwed, In ad hoc networks, terminals form a network with decentralized and self-organizing manners. Although this can surely extend its potentials, it also suffers from unstable and unreliable communication environments. As concerns this, a broadcast-based routing protocol called opportunistic routing (OR) has been proposed. ORs do not establish any specific route from a source terminal to a destination terminal unlike conventional unicast routing protocols. This characteristic contributes to obtain path diversity and improves end-to-end reliability with multiple forwarding paths. However, the metrics to select appropriate forwarders to a destination terminal greatly affect its performance and grasp of comprehensive terminal status still remains as an issue to be discussed. In this paper, we propose a hierarchical opportunistic routing with stability information of terminals to enable more efficient and reliable forwarding in ad hoc networks to address the issue. The performance evaluation shows that the proposed method has better performance than the conventional protocols.
International conference proceedings, English - DTN Reliability Enhancement with End-to-End Retransmission in the Presence of a Complete Route
Saw David San; Ryo Yamamoto; Yoshiaki Tanaka
30th International Technical Conference on Circuit/System, Computer and Communications, 413-416, 30 Jun. 2015, Peer-reviwed
International conference proceedings, English - Autonomous Retransmission Terminal Selection with Neighbour Terminals for Ad Hoc Networks
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
IEICE Transaction on Communications, J98-B, 6, 484-496, 01 Jun. 2015, Peer-reviwed
Scientific journal, Japanese - Road Side Unit Assisted Stochastic Multi-hop Broadcast Scheme for Instant Emergency Message Propagation
Xing Fan; Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
2015 17TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY (ICACT), IEEE, 2015, Peer-reviwed, VANET ( Vehicular ad hoc Network) is a special kind of ad hoc wireless network where every single node is a vehicle moving in a relatively high velocity, which leads to exclusive challenges like rapid changing topologies, safety and privacy concerns. In this specific network, broadcasts tend to be carrying important messages such as car accident notification, disaster alert or extreme traffic condition. Thus the propagation of broadcasted emergency messages could be critical to save human lives and property. Many researchers have proposed routing or broadcast protocols to solve this problem in VANET. With consideration of the other common issues. The objective of this paper is to propose a broadcast scheme in VANET that is not likely to cause broadcast storm problem with a reasonable delay and high delivery rate. Since VANET is an attack-prone network and any kind of malicious behavior in VANET might cause serious loss or even death in reality, we should also refrain from using beacons to exchange privacy-sensitive information in V2V ( Vehicle to Vehicle). In this paper, a multi-hop broadcast scheme that makes use of RSU and V2I ( Vehicle to Infrastructure) communication is proposed. The simulation result shows that the proposed scheme outperforms static stochastic broadcast scheme in terms of delivery rate. Comparing to flooding, we offer a better delay and less network usage.
International conference proceedings, English - Dempster-Shafer Evidence Theory Based Trust Management Strategy against Cooperative Black Hole Attacks and Gray Hole Attacks in MANETs
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
2014 16TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY (ICACT), IEEE, 2, 3, 223-+, 2014, Peer-reviwed, The MANETs have been experiencing exponential growth in the past decade. However, their vulnerability to various attacks makes the security problem extremely prominent. The main reasons are its distributed, self-organized and infrastructure independent natures. As concerning these problems, trust management scheme is a common way to detect and isolate the compromised nodes when a cryptography mechanism shows a failure facing inner attacks. Among huge numbers of attacks, black hole attack may collapse the network by depriving the route of the normal communication. The conventional proposed method achieved good performance facing black hole attack, while failing to detect gray hole attacks. In this paper, a Dempster-Shafer (D-S) evidence based trust management strategy is proposed to conquer not only cooperative black hole attack but also gray hole attack. In the proposed method, a neighbour observing model based on watchdog mechanism is used to detect single black hole attack by focusing on the direct trust value (DTV). Historical evidence is also taken into consideration to go against gray hole attacks. Then, a neighbour recommendation model companied with indirect trust value (ITV) is used to figure out the cooperative black hole attack. D-S evidence theory is implemented to combine ITVs from different neighbours. Some of the neighbour nodes may declare a false ITV, which effect can also be diminished through the proposed method. The simulation is firstly conducted in the Matlab to evaluate the performance of the algorithm. Then the security routing protocol is implemented in the GloMoSim to evaluate the effectiveness of the strategy. Both of them show good results and demonstrate the advantages of proposed method by punishing malicious actions to prevent the camouflage and deception in the attacks.
International conference proceedings, English - Road Side Unit Assisted Stochastic Multi-hop Broadcast Scheme for Instant Emergency Message Propagation
Xing Fan; Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
2014 16TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY (ICACT), IEEE, 103-108, 2014, Peer-reviwed, VANET (Vehicular ad hoc Network) is a special kind of ad hoc wireless network where every single node is a vehicle moving in a relatively high velocity, which leads to exclusive challenges like rapid changing topologies, safety and privacy concerns. In this specific network, the propagation of emergency messages could be critical to save human lives and property. Many researchers have proposed routing or broadcast protocols to solve the problems in VANET. The objective of this paper is to propose a broadcast scheme in VANET that is not likely to cause broadcast storm problem with a reasonable delay and high delivery rate. Since VANET is an attack-prone network and any kind of malicious behaviour in VANET might cause serious loss or even death in reality, we should also refrain from using beacons to exchange privacy-sensitive information in V2V (Vehicle to Vehicle). In this paper, a multi-hop broadcast scheme that makes use of RSU and V2I (Vehicle to Infrastructure) communication is proposed. The simulation result shows that the proposed scheme outperforms static stochastic broadcast scheme in terms of delivery rate. Comparing to flooding, we offer a better delay and less network usage.
International conference proceedings, English - A Multipath Energy-Efficient Probability Routing Protocol in Ad Hoc Networks
Zhimu Huang; Ryo Yamamoto; Yoshiaki Tanaka
2014 16TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY (ICACT), IEEE, 224-250, 2014, Peer-reviwed, Ad hoc networks are decentralized type of wireless networks. Moreover, ad hoc networks are characterized by random, multi-hop topologies that may change rapidly over time because of mobile nodes. However, since nodes in ad hoc networks operate on limited battery energy and it is impractical to recharge or replace the battery, an energy-efficient protocol is important in the design of ad hoc networks. By conventional routing protocols, a shortest path is always selected in ad hoc networks. Without considering the energy consumption, some nodes will exhaust very soon and ad hoc networks will become partitioned. Improving routing protocols to prolong the lifetime of ad hoc networks has been a hot research area in the past few years. However, most of protocols only focus on the constrained battery energy. In this paper, a new protocol is proposed. It is a multipath energy-efficient probability routing protocol based on AODV (MEP-AODV). In MEP-AODV, not only battery energy consumption but also multipath selection is considered. By the proposed protocol, when an intermediate node received a request packet (RREQ), it won't relay the RREQ immediately. It will relay the RREQ with a probability which is based on its remaining battery energy. After the RREQ arrived at the destination node, it won't trigger a reply packet (RREP) at once until the expiry of a delay timer. The destination will select multiple paths with sufficient battery energy from the collected paths after the timer expired. Then the destination node initiates the corresponding RREPs. The source node can send data packets via the selected multiple paths by a probability function which is based on the minimum node remaining battery energy of one path. This proposed protocol is implemented in QualNet to evaluate the performance. From the results, MEP-AODV shows the good energy efficiency in terms of the maximizing the lifetime of ad hoc networks.
International conference proceedings, English - Road Side Unit Assisted Stochastic Multi-hop Broadcast Scheme for Instant Emergency Message Propagation
Xing Fan; Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
2014 16TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY (ICACT), IEEE, 3, 3, 103-108, 2014, Peer-reviwed, VANET (Vehicular ad hoc Network) is a special kind of ad hoc wireless network where every single node is a vehicle moving in a relatively high velocity, which leads to exclusive challenges like rapid changing topologies, safety and privacy concerns. In this specific network, the propagation of emergency messages could be critical to save human lives and property. Many researchers have proposed routing or broadcast protocols to solve the problems in VANET. The objective of this paper is to propose a broadcast scheme in VANET that is not likely to cause broadcast storm problem with a reasonable delay and high delivery rate. Since VANET is an attack-prone network and any kind of malicious behaviour in VANET might cause serious loss or even death in reality, we should also refrain from using beacons to exchange privacy-sensitive information in V2V (Vehicle to Vehicle). In this paper, a multi-hop broadcast scheme that makes use of RSU and V2I (Vehicle to Infrastructure) communication is proposed. The simulation result shows that the proposed scheme outperforms static stochastic broadcast scheme in terms of delivery rate. Comparing to flooding, we offer a better delay and less network usage.
International conference proceedings, English - Autonomous Retransmission Control with Neighbour Terminals for Ad Hoc Networks
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
2014 16th Asia-Pacific Network Operations and Management Symposium (APNOMS), IEEE, TS2-3, 2014, Peer-reviwed, In ad hoc networks, radio interference and terminal' mobility can cause frame losses. When the frame losses occur continuously, general datalink layer protocols regard it as a link failure and then notify it to network layer protocols. In conventional routing protocols, a source terminal initiates route discovery process to recover from the link failures on receiving the notifications even if the source terminal still has a valid route to a destination terminal. However, the route discovery requires a route request flooding and the flooding may consume limited network resources of ad hoc networks and that also degrades transmission efficiency. For solving the problems, several retransmission and relay control methods have been proposed. In these methods, neighbour terminals of a transmission route overhear transmitted frames and retransmit lost frames autonomously by using the overheard frames. However, the conventional retransmission methods have a disadvantage that they degrade the transmission efficiency under bursty frame loss interval. Moreover, conventional relay control methods suffer from a processing overhead and a slow adaptation problem under a sparse frame loss. In this paper, we propose an efficient and lightweight method that neighbour terminals adaptively retransmit lost frames considering a frequency of the losses. Computer simulations clarify the performances and the effectiveness of the proposed method.
International conference proceedings, English - Performance Analysis of Fixed Node Assisted Opportunistic Routing for Ad Hoc Networks
Tatsuya Shirai; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
2014 SECOND INTERNATIONAL SYMPOSIUM ON COMPUTING AND NETWORKING (CANDAR), IEEE, 260-265, 2014, Peer-reviwed, In ad hoc networks, we can achieve better performance if we use fixed nodes besides mobile nodes. In this paper, we first present a network model comprised of fixed nodes with enough network resource as well as mobile nodes. Then, we propose a novel routing method that opportunistically selects the most stable links through fixed nodes in preference to links through mobile nodes based on the mobility information of neighbouring nodes. The proposed method also relieves packet losses due to its simple retransmission function among fixed nodes. The simulation results show that the proposed method opportunistically selects stable links and able to improve the performance with higher packet delivery rate and lower control message overhead.
International conference proceedings, English - Neighbour Traffic Adaptive Load Balancing Method Using Transmission Rate Control For Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
IEICE Transaction on Communications, The Institute of Electronics, Information and Communication Engineers, J96-B, 7, 782-792, 01 Jul. 2013, Peer-reviwed, アドホックネットワークでは,移動する端末同士が自律分散的にネットワークを構築して通信を行うため,ネットワーク内の通信状態を一元的に管理することが困難である.そのため,端末密度が高く,通信環境が安定している箇所や端末ほどトラヒックが集中しやすく,ネットワーク内における通信の公平性を低下させる要因となりうる.この問題に対し,経路制御によって負荷分散を実現する手法やTCP制御の効率化によって通信効率を向上させる手法が提案されている.しかし,経路探索に基づく手法では,端末の移動に伴う最適通信経路の変化や負荷の大きな変動に対応することが困難である.また,アドホックネットワーク向けのTCPでは,通信効率の向上を主な目的としているため,ネットワーク全体として適切な制御とならない可能性がある.本論文では,漏れ聞きを利用して把握した近傍端末の通信状態とHelloメッセージの交換によって取得した情報に基づいて送信速度制御を行うことで負荷分散を実現する手法を提案する.また,コンピュータシミュレーションを用いた性能評価を行い,提案手法が高い負荷分散効果を示し,効率的な通信を実現できることを示す.
Scientific journal, Japanese - Historical evidence based trust management strategy against black hole attacks in MANET
Bo Yang; Yamamoto, R.; Tanaka, Y.
2012 14th International Conference on Advanced Communication Technology (ICACT), 394-399, 20 Feb. 2012, Peer-reviwed
Scientific journal, English - Neighbour traffic-aware load balancing method in ad hoc networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Proceedings of the 2012 4th International Conference on Intelligent Networking and Collaborative Systems, INCoS 2012, 193-197, 2012, Peer-reviwed, Load balancing in ad hoc networks is more challenging issue than that in wired networks because the nature of decentralized network management and terminal mobility makes it difficult to realize appropriate controls for the whole network. Although some traffic-based load balancing methods that work with rerouting mechanisms have been proposed, they are, due to the overhead for rerouting, hard to adapt the environment where the traffic or the topology changes in a short period. Furthermore, the conventional methods cannot always find appropriate routes since they only give attention to the current transmission route. This paper proposes a load balancing method based on adaptive transmission rate control using neighbouring terminals' status. The proposed method does not adopt a rerouting mechanism but introduce a rate control so that we do not have to consider the overhead for rerouting. Computer simulation showed that, depending on terminals' status, our method achieves more effective load balancing, as well as better throughput, than the conventional rerouting-based methods. © 2012 IEEE.
International conference proceedings, English - A Load Balancing Method with Adaptive Transmission Rate Control in Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
13th Asia-Pacific Network Operations and Management Symposium, I2-3, 23 Sep. 2011, Peer-reviwed
International conference proceedings, English - Wormhole Attack Defense Method Based on Observation Report for Mobile Ad Hoc Networks
Qi Wang; Ryo Yamamoto; Yoshiaki Tanaka
26th International Technical Conference on Circuit/System, Computer and Communications, P3-6, 1139-1142, 19 Jun. 2011, Peer-reviwed
International conference proceedings, English - A method for side splitting of packet traces
Marat Zhanikeev; Ryo Yamamoto; Kyoko Yamori; Yoshiaki Tanaka
APNOMS 2011 - 13th Asia-Pacific Network Operations and Management Symposium: Managing Clouds, Smart Networks and Services, Final Program, TS6-1, 2011, Peer-reviwed, Recent simulation-based networking research prefers the use of real packet traces to traditional model-based traffic generation. Part of this demand comes from the fact that synthetic traffic is only remotely similar to that found in real life. Now, the biggest problem with replaying real packet traces in simulation is that the majority of publicly available traces are bilateral. Splitting traces into two subtraces for each direction of the link is a challenging task and has already been tackled by several research works and software tools with imperfect outcome. This research proposes a new method for two-side splitting of packet traces. © 2011 IEEE.
International conference proceedings, English - Transport Protocol Using Round Trip Time for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
IEICE Transaction on Communications, The Institute of Electronics, Information and Communication Engineers, J93-B, 5, 735-746, 01 May 2010, Peer-reviwed, アドホックネットワークでは無線通信を利用して通信を行うため,電波干渉や障害物による影響からセグメント損失が有線通信と比較して多発する.代表的なトランスポートプロトコルであるTCP Renoでは,セグメント損失の発生を利用してふくそう検知を行い,送信レートを低下させることでふくそう回避を行う.しかし,ふくそう以外の理由によるセグメント損失が発生した場合には,不必要なふくそう回避が行われ,通信効率が著しく低下する。また,TCP Renoの改良プロトコルであるTCP Vegasでは,高速なデータ転送を実現しているが,アドホックネットワークでの性能低下やTCP Renoとの公平性の低下が問題となる.これらの問題に対し,TCP Renoのウィンドウ制御に帯域推定を組み込んだTCP Westwoodや,TCP Vegasのウィンドウ制御のしきい値を動的に変化させるTCP Vegas-Aなどが提案されている.しかし,通信状態が随時変動するアドホックネットワークでは,帯域推定は困難であり,また大幅な状態変動への対応が困難である.本論文では,TCP Vegasを基本とし,RTTの変動によってネットワークの状態を把握し,かつ端末間,及びプロトコル間の公平性を考慮したトランスポートプロトコルを提案する.また,コンピュータシミュレーションを用いた性能評価を行い,提案手法が高い安定性と公平性を確保した効率的な通信を実現できることを示す.
Scientific journal, Japanese - Distributed Retransmission Method Using Neighbor Terminals for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi
2008 14TH ASIA-PACIFIC CONFERENCE ON COMMUNICATIONS, (APCC), VOLS 1 AND 2, IEEE, 455-+, 2008, Peer-reviwed, We propose a novel distributed retransmission control method for ad hoc networks. Since ad hoc networks are based on wireless communication to transmit data among terminals, radio interference or obstacles often cause link failures and packet loss. In conventional ad hoc routing protocols, a source terminal must discover and reconstruct a new transmission route when link failures or multiple packet losses are observed on the current route. Such route discovery schemes generally increase network traffic. Various retransmission control mechanisms and multipath routing protocols have been proposed to overcome this problem. In the conventional method, however, the terminal that retransmits the lost packets should be located in the neighborhood of the destination terminal. In other words, only the last hop on the route is retransmittable. Moreover, although multipath routing mechanisms can increase transmission success rate, the terminal overhead increases owing to transmission of extra data stream on the route. The proposed method cooperatively uses neighboring terminals of the route to enable retransmission from any terminal on the route. The effectiveness of our method is demonstrated by computer simulation.
International conference proceedings, English
MISC
- A Dynamic Routing Table Management Method using Name Resolution Service and Smart Contract over CCN
Aoi Namai; Satoshi Ohzahata; Ryo Yamamoto
情報通信マネジメント研究会, 22 Mar. 2024, 電子情報通信学会技術報告, Japanese - Virtual Network Embedding Based on Property of Substrate Network in Multi-service Environments
Yamato Negishi; Satoshi Ohzahata; Ryo Yamamoto
情報通信マネジメント研究会, 22 Mar. 2024, 電子情報通信学会技術報告, Japanese - Quality Enhancement of WebRTC Real-Time Streaming Using Dynamic Control of Encoding Parameter for Scalable Video Coding
Naoki Eda; Satoshi Ohzahata; Ryo Yamamoto
情報通信マネジメント研究会, 21 Mar. 2024, 電子情報通信学会技術報告, Japanese - Self-adaptive Traffic Anomaly Detection System for IoT Smart Home Environments
Naoto Watanabe; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Masataka Nakahara; Norihiro Okui; Ayumu Kubota
With the growth of internet of things (IoT) devices, cyberattacks, such as
distributed denial of service, that exploit vulnerable devices infected with
malware have increased. Therefore, vendors and users must keep their device
firmware updated to eliminate vulnerabilities and quickly handle unknown
cyberattacks. However, it is difficult for both vendors and users to
continually keep the devices safe because vendors must provide updates quickly
and the users must continuously manage the conditions of all deployed devices.
Therefore, to ensure security, it is necessary for a system to adapt
autonomously to changes in cyberattacks. In addition, it is important to
consider network-side security that detects and filters anomalous traffic at
the gateway to comprehensively protect those devices. This paper proposes a
self-adaptive anomaly detection system for IoT traffic, including unknown
attacks. The proposed system comprises a honeypot server and a gateway. The
honeypot server continuously captures traffic and adaptively generates an
anomaly detection model using real-time captured traffic. Thereafter, the
gateway uses the generated model to detect anomalous traffic. Thus, the
proposed system can adapt to unknown attacks to reflect pattern changes in
anomalous traffic based on real-time captured traffic. Three experiments were
conducted to evaluate the proposed system: a virtual experiment using
pre-captured traffic from various regions across the world, a demonstration
experiment using real-time captured traffic, and a virtual experiment using a
public dataset containing the traffic generated by malware. The experimental
results indicate that a system adaptable in real time to evolving cyberattacks
is a novel approach for ensuring the comprehensive security of IoT devices
against both known and unknown attacks., 05 Mar. 2024, arXiv:2403.02744 - Improving Training Data of Object Detection with Multiple Object Tracking for Federated Learning
Yuta Ikeda; Yuki Nakahama; Satoshi Ohzahata; Ryo Yamamoto
センサネットワークとモバイルインテリジェンス研究会, 01 Mar. 2024, 電子情報通信学会技術報告, Japanese - 空域の混雑と利用者の公平性を考慮したUAV分散管理手法
原口隆彦; 片田寛志; 山崎 託; 三好 匠; 山本 嶺; 上田清志
ネットワークシステム研究会, 01 Mar. 2024, 電子情報通信学会技術報告, Japanese - Implementation of a cooperative streaming method between streaming server and P2P using WebRTC Encoded Transform
Ryunosuke Sato; Satoshi Ohzahata; Ryo Yamamoto
情報ネットワーク研究会, 22 Dec. 2023, 電子情報通信学会技術報告, Japanese - A No-Reference QoE Estimation method with WebRTC Statistics using Deep Learning
Keisuke Sakakibara; Satoshi Ohzahata; Ryo Yamamoto
コミュニケーションクオリティ研究会, 22 Nov. 2023, 電子情報通信学会技術報告, Japanese - Federated Learningのための複数車載カメラによる物体追跡を用いたラベル付け
中濱雄喜; 大坐畠 智; 山本 嶺
情報ネットワーク研究会, 19 Oct. 2023, 電子情報通信学会技術報告, Japanese - LiDARを介した車載カメラ間の物体追跡によるラベル付け
中濱雄喜; 大坐畠智; 山本嶺
14 Sep. 2023, 電子情報通信学会ソサイエティ大会 - Virtual Network Embedding Method for Improving Wireless Network Resource Utilization Efficiency
Raihaanjun Kushiyama; Ryo Yamamoto; Satoshi Ohzahata
Technical Committee on Information and Communication Management, 17 Mar. 2023, IEICE Technical Report, Japanese - Load-Sensitive Balancing Strategy Switching with Spatial-Temporal Load Balancing Method for Wireless Sensor Networks
Tomoya Sato; Ryo Yamamoto; Satoshi Ohzahata
Technical Committee on Communication Quality, 17 Mar. 2023, IEICE Technical Report, Japanese - Autonomous Action Strategy Based on Assumed Risk Assessment for Multi-UAV Cooperated Unmanned Disaster Search and Rescue
Yukiya Kunugi; Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi; Kiyoshi Ueda; Satoshi Ohzahata
Technical Committee on Communication Quality, 16 Mar. 2023, IEICE Technical Report, Japanese - Optimizing the Placement of Highly Reliable Fog Node Using Tabu Search for Fog Computing
Takamichi Yamamoto; Ryo Yamamoto; Satoshi Ohzahata
08 Mar. 2023, IEICE General Conference, Japanese - Experimental Evaluation of the Impact of Access Point Layout on Wi-Fi RTT-based Indoor Positioning Accuracy
Hidekazu Fujimoto; Ryo Yamamoto; Satoshi Ohzahata
08 Mar. 2023, IEICE General Conference, Japanese - Charging Route Selection with Predicted Energy Consumption for Wireless Rechargeable Sensor Networks
Shun Nakata; Ryo Yamamoto; Satoshi Ohzahata
08 Mar. 2023, IEICE General Conference, Japanese - Centrality Evaluation Using Nearby Detour Routes for End-to-End Routes
Ken Sasaki; Ryo Yamamoto; Satoshi Ohzahata
08 Mar. 2023, IEICE General Conference, Japanese - Experimental Evaluation of Accommodated Traffic Maximization with Opportunistic Routing in Heterogeneous Networks
Tomoya Yasutake; Ryo Yamamoto; Satoshi Ohzahata
07 Mar. 2023, IEICE General Conference, Japanese - Evaluate Multiple Route Construction Methods for UAVs Travel Time and Safety using a Variety of Node Arrangements
Yuto Kokubun; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
Technical Committee on Network Systems, 03 Mar. 2023, IEICE Technical Report, Japanese - Relay Node Selection Method for UAV Routing in Wireless Multi-hop Network
Haruki Gunji; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
Technical Committee on Network Systems, 03 Mar. 2023, IEICE Technical Report, Japanese - 街plus探訪 商業と鉄道の街「大宮」
山本 嶺
東京 : 電子情報通信学会通信ソサイエティ, 2023, B-plus : 電子情報通信学会通信ソサイエティマガジン, 64, 354-357, Japanese, 1884-4863, AA12215098 - Efficient Execution of Wireless Multi-hop Network Simulation by User-PC Computing System using Docker
郡司遥輝; 舩曵信生; HTET Hein; AUNG Lynn Htet; 三好匠; 山崎託; 山本嶺; 上田清志
2023, 電子情報通信学会技術研究報告(Web), 122, 406(NS2022 167-251), 2432-6380, 202302288974988433 - AODV-based Multiple Route Construction Methods for UAVs Travel Time and Safety
Yuto Kokubun; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
Technical Committee on Network Systems, 25 Nov. 2022, IEICE Technical Report, Japanese - Evaluation of OLSR-based Multiple UAVs Route Construction Method using Link Hierarchization
Haruki Gunji; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
Technical Committee on Network Systems, 25 Nov. 2022, IEICE Technical Report, Japanese - Making a Pre-training Model of Deep Reinforcement Learning for TCP Congestion Control using Different Communication Environments
Takumi Odagawa; Satoshi Ohzahata; Ryo Yamamoto
31 Oct. 2022, RISING, Japanese - Detecting Object through Federated Learning with an autonomous driving simulator Generated Data
Atsushi Nakajima; Satoshi Ohzahata; Ryo Yamamoto
31 Oct. 2022, RISING, Japanese - An Anomaly Detection System of IoT Traffic for Smart Home Environments
Naoto Watanabe; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto
Technical Committee on Network Systems, 05 Oct. 2022, IEICE Technical Report, Japanese - Performance Analysis of UAV Distributed Management Method Based on Network Technologies
Takahiko Haraguchi; Hiroshi Katada; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Kiyoshi Ueda
Technical Committee on Network Systems, 02 Sep. 2022, IEICE Technical Report, Japanese - A Flooding Realization Method by Dynamic FIB Construction in CCN
Aoi Namai; Satoshi Ohzahata; Ryo Yamamoto
Technical Committee on Information Network, 11 Mar. 2022, IEICE Technical Report, Japanese - ACO-inspired Load Balancing for Backoff-based Opportunistic Routing
Yudai Matsuo; Ryo Yamamoto; Satoshi Ohzahata; Taku Yamazaki; Takumi Miyoshi
Technical Committee on Communication Quality, 10 Mar. 2022, IEICE Technical Report, Japanese - Active intrusion detection method for IoT devices
Takahiro Ohtani; Ryo Yamamoto; Satoshi Ohzahata
Technical Committee on Communication Quality, 09 Mar. 2022, IEICE Technical Report, Japanese - Communication Resources Allocation in Multi-Channel In-Car Wireless Networks
Sorato Takaya; Ryo Yamamoto; Satoshi Ohzahata; Genki Hosokawa; Tadahide Kunitachi
Technical Committee on Communication Quality, 09 Mar. 2022, IEICE Technical Report, Japanese - 災害時における事前取得位置情報に基づいたUAV移動基地局の経路決定法
Reiko Iwamoto; Takumi Miyoshi; Taku Yamazaki; Thomas Silverston; Ryo Yamamoto; Kiyoshi Ueda
Mar. 2022, IEICE General Conference, Japanese - 高密度UAV環境における地上ビーコンを用いた分散管理手法
Takahiko Haraguchi; Hiroshi Katada; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Thomas Silverston; Kiyoshi Ueda
Mar. 2022, IEICE General Conference, Japanese - 無線ジオフェンスによる飛行禁止領域回避のためのUAV軌道制御手法
Kazuya Momoe; Takumi Miyoshi; Taku Yamazaki; Thomas Silverston; Ryo Yamamoto; Kiyoshi Ueda
Mar. 2022, IEICE General Conference, Japanese - ハニーポットと機械学習を用いたIoTトラヒックの異常検知
Naoto Watanabe; Taku Yamazaki; Takumi Miyoshi; Thomas Silverston; Ryo Yamamoto
Mar. 2022, IEICE General Conference, Japanese - A Study on UAV Flight Management System Based on Network Technologies
Takahiko Haraguchi; Hiroshi Katada; Taku Yamazaki; Takumi Miyoshi; Kiyoshi Ueda; Ryo Yamamoto; Thomas Silverston
Technical Committee on Network Systems, 07 Oct. 2021, IEICE Technical Report, Japanese - A Study on IoT Traffic Anomaly Detection in Smart Home Environments
Naoto Watanabe; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Thomas Silverston
Technical Committee on Network Systems, 06 Oct. 2021, IEICE Technical Report, Japanese - A Routing Method for CCN with Blockchain
Shuichi Tokunaga; Satoshi Ohzahata; Ryo Yamamoto
Technical Committee on Information Network, 09 Sep. 2021, IEICE Technical Report, Japanese - SSDF Attack Detection Using Ridge Regression
Yamato Negishi; Satoshi Ohzahata; Ryo Yamamoto
Sep. 2021, IEICE Society Conference, Japanese - [Invited Talk] Queueing Simulation for Predicting COVID-19 Pandemic and Required Medical Resources
Takumi Miyoshi; Taku Yamazaki; Ryo Yamamoto; Tomoyuki Yatabe
Technical Committee on Information and Communication Management, 11 Mar. 2021, IEICE Technical Report, Japanese - [Invited Lecture] Communication Technology and Its Application in Wireless Multi-hop Networks
Ryo Yamamoto
Technical Committee on Communication Quality, 21 Jan. 2021, IEICE Technical Report, Japanese - Improvement of MPTCP Throughput under Insufficient Send Socket Buffer
Toshihiko Kato; Adhikari Diwakar; Ryo Yamamoto; Satoshi Ohzahata
Technical Committee on Information Network, 07 Dec. 2020, IEICE Technical Report, Japanese - A dynamic cache server placement method for content distribution system over container infrastructure
Fumiya Suzuki; Satoshi Ohazahata; Ryo Yamamoto; Toshihiko Kato
インターネットアーキテクチャ研究会, 09 Oct. 2020, IEICE Technical Report, Japanese - Information Sharing System Based on Vehicle Location in Hierarchical VANET
Mitsuhiro Nakamura; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiai Tanaka
Mar. 2020, IEICE General Conference, Japanese - A Routing Method Using Microwave and mmWave in Vehicle
Ohba Takato; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Genki Hosokawa; Tadahide Kunitachi; Yoshiaki Tanaka
Mar. 2020, IEICE General Conference, Japanese - A Packet Forwarding Method Using Concurrent Transmission Flooding and Opportunistic Routing
Tomoyuki Yokoyama; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto
Mar. 2020, IEICE General Conference, Japanese - A Study on Congestion Control Scheme for Multipath TCP Based on CUBIC TCP
Toshihiko Kato; Shiho Haruyama; Ryo Yamamoto; Satoshi Ohzahata
Technical Committee on Information Network, 19 Dec. 2019, IEICE Technical Report, Japanese - An Experimental Study on Congestion Control for Multipath TCP and Conventional TCP
Shiho Haruyama; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Technical Committee on Communication Quality, 22 Nov. 2019, IEICE Technical Report, Japanese - A study on bitrate control using feedback based on node cache information in adaptive streaming over ICN
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Technical Committee on Network Systems, 10 Oct. 2019, IEICE Technical Report, Japanese - Performance Evaluation of Social-Aware Cooperative D2D Relay Selection in 2-dimension Environment
Yu Long; Ryo Yamamoto; Taku Yamazaki; Yoshiaki Tanaka
11 Sep. 2019, IEICE Society Conference, English - [Poster] Characterization of Hierarchical VANET Communication on Merging Traffic
中村 光宏; 山崎 託; 山本 嶺; 三好 匠; 田中 良明
05 Sep. 2019, 第3回コミュニケーションクオリティ学生ワークショップ, Japanese - [Invited Talk] Dynamic Routing Protocols for Wireless Multihop Networks
Ryo Yamamoto
Technical Committee on Communication Quality, 28 Aug. 2019, IEICE Technical Report, Japanese, Invited - A study on stabilizing bit rate selection for adaptive streaming on ICN
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Technical Committee on Communication Quality, 18 Jul. 2019, IEICE Technical Report, Japanese - Throughput Enhancement with Edge Overlay Using Commodity Devices in Data Center Networks
Hiroki Kawahara; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Technical Committee on Network Systems, 16 May 2019, IEICE Technical Report, Japanese - A study on content registration with blockchain in CCN
Rei Nakagawa; Yuki Tajima; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Technical Committee on Network Systems, 19 Apr. 2019, IEICE Technical Report, Japanese - Social-aware Cooperative Relay Selection in D2D Communication
Yu Long; Ryo Yamamoto; Taku Yamazaki; Yoshiaki Tanaka
20 Mar. 2019, IEICE General Conference, English - Redundant Route Reduction Method Based on Inter-Vehicle Distances in Hierarchical VANET
Mitsuhiro Nakamura; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiai Tanaka
19 Mar. 2019, IEICE General Conference, Japanese - A Proposal of Cache-Aware Adaptive Video Streaming System According Edge-Router Control on ICN
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
19 Mar. 2019, IEICE General Conference, Japanese - Estimation of TCP Congestion Control Algorithm by Use of Recurrent Neural Network
Naoki Ohzeki; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Technical Committee on Network Systems, 05 Mar. 2019, IEICE Technical Report, Japanese - Improving communication quality and cache efficiency with edge router controls for adaptive video streaming over ICN
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Technical Committee on Network Systems, 05 Mar. 2019, IEICE Technical Report, Japanese - An off-chain implementation of smart contract for computation resource management on cloud-based network system
Takato Ohsawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Technical Committee on Information Network, 04 Mar. 2019, IEICE Technical Report, Japanese - An Experimental Study on MultiPath TCP Congestion Control
Toshihiko Kato; Adhikari Diwakar; Ryo Yamamoto; Satoshi Ohzahata
Technical Committee on Information Network, 13 Dec. 2018, IEICE Technical Report, Japanese - A Study on Throughput Degradation in TCP Reno Invoked by Access Point Scanning over Wireless LAN
Souta Tasaki; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Technical Committee on Communication Quality, 15 Nov. 2018, IEICE Technical Report, Japanese - A proposal of fast contents delivery infrastructure using container technology
Kento Nakanishi; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Technical Committee on Network Systems, 18 Oct. 2018, IEICE Technical Report, Japanese - フローティングコンテンツにおけるポアソン分布に基づくアンカーゾーン有効半径最適化
Atsufumi Kashima; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
13 Sep. 2018, IEICE Society Conference, Japanese - Device to Device Peer Discovery Mechanism Based on Social Network Information
Yu Long; Ryo Yamamoto; Taku Yamazaki; Yoshiaki Tanaka
12 Sep. 2018, IEICE Society Conference, English - A cache assignment method with bandwidth reservation for CCN
Atsuko Yokotani; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Technical Committee on Communication Systems, 12 Jul. 2018, IEICE Technical Report, Japanese - Adaptive Parameter Control Based on Smoothed Random Value in Backoff-based Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Tadahide Kunitachi; Yoshiaki Tanaka
21 Mar. 2018, IEICE General Conference, Japanese - A Proposal on Collaborative Control of Bandwidth and Cache in CCN
Atsuko Yokotani; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
21 Mar. 2018, IEICE General Conference, Japanese - スマートコントラクトを用いた実際のやりとりを相互に確認する方式の検討
小堀 輝; 大坐畠 智; 山本 嶺; 加藤 聰彦
21 Mar. 2018, IEICE General Conference, Japanese - Advanced Bayesian Watchdog Mechanism Based on Bayesian Belief Network to Prevent Malicious Nodes in MANETs
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
20 Mar. 2018, IEICE General Conference, English - Heterogeneous Opportunistic Routing Based on Route Reliability
Yasushi Okamura; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Technical Committee on Communication Quality, 08 Mar. 2018, IEICE Technical Report, Japanese - Experimental Verification of Packet Loss Classification Method using K-means Clustering in TCP Congestion Control for IEEE802.11 WLAN Link
Tomokazu Moriyama; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Technical Committee on Communication Quality, 08 Mar. 2018, IEICE Technical Report, Japanese - Lifetime Extension of Wireless Sensor Networks by Ant Colony Optimization Routing
Seira Nishibu; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Technical Committee on Communication Quality, 08 Mar. 2018, IEICE Technical Report, Japanese - Effective Anchor Zone Radius Optimization Based on the Number of Encountered Terminals for Floating Content
Atsufumi Kashima; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Technical Committee on Network Systems, 02 Mar. 2018, IEICE Technical Report, Japanese - Multiple Reference Terminal Placement for Hierarchical Opportunistic Routing Using Destination Terminal Area Estimation
Ryota Kameda; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Technical Committee on Network Systems, 02 Mar. 2018, IEICE Technical Report, Japanese - A Piece and Destination Selection Method of Pseudo-Multicast Streaming Content Delivery with Network Coding
Kento Miyatani; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Technical Committee on Information Network, 23 Jan. 2018, IEICE Technical Report, Japanese - An Adaptive Bandwidth Reservation Method According to Content Request and Resource Utilization in Content Centric Network
Tomoharu Endo; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Technical Committee on Information Network, 23 Jan. 2018, IEICE Technical Report, Japanese - Adaptive Parameter Control Based on Random Value Information in Backoff-based Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Tadahide Kunitachi; Yoshiaki Tanaka
Technical Committee on Network Systems, 18 Jan. 2018, IEICE Technical Report, Japanese - Performance Degradation of Multipath TCP by Limited Send Socket Buffer over Subflows with Different Transmission Delay
Adhikari Diwakar; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Technical Committee on Information Network, 14 Dec. 2017, IEICE Technical Report, English - Invited Lecture : Opportunistic Routing by Narrowing Forwarding Areas in Ad Hoc Networks
山崎 託; 山本 嶺; 三好 匠; 朝香 卓也; 田中 良明
電子情報通信学会, 16 Nov. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 117, 303, 29-32, Japanese, 0913-5685, 40021401363, AA11546431 - Poster Presentation : A Bandwidth Reservation Method According to User Request in Content Centric Network
遠藤 朝陽; 大坐畠 智; 山本 嶺; 加藤 聰彦
電子情報通信学会, 26 Oct. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 117, 262, 43-46, Japanese, 0913-5685, 40021373558, AA11546431 - Hierarchical Opportunistic Routing Using Broadcast Nature of Wireless Communications
Ryota Kameda; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
13 Sep. 2017, IEICE Society Conference, Japanese - Adaptive Parameter Calculation Based on Cubic Function in Backoff-based Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Tadahide Kunitachi; Yoshiaki Tanaka
13 Sep. 2017, IEICE Society Conference, Japanese - Secure Load Balanced Handover in LTE Self Organized Network
Nava Krishna Chaitanya Javvaji; Ryo Yamamoto; Yoshiaki Tanaka
12 Sep. 2017, IEICE Society Conference, English - A cache control method considering bandwidth reservation content in CCN
李 智輝; 大坐畠 智; 山本 嶺; 加藤 聰彦
電子情報通信学会, 07 Sep. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 117, 204, 85-90, Japanese, 0913-5685, 40021342062, AA11546431 - A Hybrid Approach for Named Data Networking Based Ad Hoc Routing (ネットワークシステム)
Minh Ngo Quang; Yamamoto Ryo; Ohzahata Satoshi; Kato Toshihiko
電子情報通信学会, 07 Sep. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 117, 204, 97-102, English, 0913-5685, 40021342073, AA11546431 - Improvement of Confidentiality over Multipath TCP Using Data Scrambling and Path Dispersion
程 詩涵; 山本 嶺; 大坐畠 智; 加藤 聰彦; 鈴木 信雄
電子情報通信学会, 28 Aug. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 117, 185, 105-111, Japanese, 0913-5685, 40021316324, AN1054106X - Frame Aggregation Size Selection for Improving IEEE 802.11ac MU-MIMO Downlink Throughput
森山 友和; 山本 嶺; 大坐畠 智; 加藤 聰彦
電子情報通信学会, 28 Aug. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 117, 185, 87-92, Japanese, 0913-5685, 40021316256, AN1054106X - Waiting Time Setting Based on Terminal Density for Opportunistic Routing
鹿島 睦史; 山崎 託; 山本 嶺; 田中 良明
電子情報通信学会, 29 May 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 117, 68, 19-24, Japanese, 0913-5685, 40021214219, AN1054106X - Advanced D-S Evidence Theory based Trust Management against Malicious Nodes in MANETs
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
24 Mar. 2017, IEICE General Conference, English - Efficient Handover Scheme for LTE/LTE-A Network
Nava Krishna Chaitanya Javvaji; Ryo Yamamoto; Yoshiaki Tanaka
24 Mar. 2017, IEICE General Conference, English - Transfer Control Method Using Terminal Hierarchization in Opportunistic Routing
Ryota Kameda; Ryo Yamamoto; Yoshiaki Tanaka
24 Mar. 2017, IEICE General Conference, Japanese - Frame Aggregation Size Selection for MU-MIMO Downlink Transmission Considering Delay and Channel Utilization
Tomokazu Moriyama; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
22 Mar. 2017, IEICE General Conference, Japanese - Improving Confidentiality in MPTCP by Data Scrambling and Multipath Transfer
Toshihiko Kato; Shihan Chen; Ryo Yamamoto; Satoshi Ohzahata; Nobuo Suzuki
22 Mar. 2017, IEICE General Conference, Japanese - Evaluation of Delay Time in Adaptive Reliability Control for Ad Hoc Networks
Tomoaki Sakaguchi; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
22 Mar. 2017, IEICE General Conference, Japanese - Experiment of Reliability Control for Ad Hoc Networks Using Bluetooth Low Energy
坂口 友彬; 山崎 託; 山本 嶺; 田中 良明
電子情報通信学会, 06 Mar. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116, 497, 67-70, Japanese, 0913-5685, 40021161199, AN1054106X - Performance Evaluation of MPTCP under Different Transmission Delay and Insufficient Send/Receive Socket Buffer
天真 正晶; 山本 嶺; 大坐畠 智; 加藤 聰彦; 鈴木 信雄
電子情報通信学会, 06 Mar. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116, 497, 61-66, Japanese, 0913-5685, 40021161171, AN1054106X - Performance Analysis of Adaptive Coefficient Control in Backoff-based Opportunistic Routing
山崎 託; 山本 嶺; 國立 忠秀; 田中 良明
電子情報通信学会, 02 Mar. 2017, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116, 484, 313-318, Japanese, 0913-5685, 40021159340, AA11546431 - 転送待機時間に基づくOpportunistic Routingにおける適応的待機時間係数制御
山崎託; 山本嶺; 山本嶺; 國立忠秀; 田中良明; 田中良明
2017, 電子情報通信学会大会講演論文集(CD-ROM), 2017, 1349-144X, 201702271645354358 - Self-Organized Neighbour Cell List in LTE Networks
Nava Krishna Chaitanya Javvaji; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
23 Sep. 2016, IEICE Society Conference, English - Evaluation of Retransmission Count in Adaptive Reliability Control for Ad Hoc Networks
Tomoaki Sakaguchi; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
22 Sep. 2016, IEICE Society Conference, Japanese - Weighted TDMA Based on Multiple Terminals’ Traffic Load for Wireless Sensor Networks
Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
22 Sep. 2016, IEICE Society Conference, Japanese - Computation Offloading Framework for Mobile Cloud Computing
Bing Yu; Ryo Yamamoto; Yoshiaki Tanaka
22 Sep. 2016, IEICE Society Conference, English - Experimental analysis on impacts to TCP throughput of power save mode in IEEE 802.11n wireless LAN
小林 健人; 橋本 善季; 野元 祐孝; 山本 嶺; 大坐畠 智; 加藤 聰彦
電子情報通信学会, 24 May 2016, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 116, 62, 39-44, Japanese, 0913-5685, 40020849857, AN1054106X - Transmission Area Restricted Opportunistic Routing for Ad Hoc Networks
荒木 涼太郎; 山崎 託; 山本 嶺; 三好 匠
電子情報通信学会, 03 Mar. 2016, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 115, 483, 435-440, Japanese, 0913-5685, 40020802263, AA11546431 - BS-3-37 A Stable Clustered Technique in Mobile Ad Hoc Networks Using Link Expiration Time(BS-3. Advanced Networking Technologies for Innovative Information Networks)
Shrestha Pratikshya; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 01 Mar. 2016, Proceedings of the IEICE General Conference, 2016, 2, "S-84"-"S-85", English, 110010038504, AN10471452 - B-6-111 Block-based Transmission with Adaptive Reliability Control for Ad Hoc Networks
Sakaguchi Tomoaki; Yamazaki Taku; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 01 Mar. 2016, Proceedings of the IEICE General Conference, 2016, 2, 111-111, Japanese, 110010037992, AN10471452 - B-6-115 Area-Restricted Opportunistic Routing for Ad Hoc Networks
ARAKI Ryotaro; YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi
The Institute of Electronics, Information and Communication Engineers, 01 Mar. 2016, Proceedings of the IEICE General Conference, 2016, 2, 115-115, Japanese, 110010037996, AN10471452 - B-11-18 Impacts of power saving mode of 802.11n WLAN to TCP small queues
Kobayashi Kento; Hashimoto Yoshiki; Nomoto Masataka; Yamamoto Ryo; Ohzahata Satoshi; Kato Toshihiko
The Institute of Electronics, Information and Communication Engineers, 01 Mar. 2016, Proceedings of the IEICE General Conference, 2016, 2, 398-398, Japanese, 110010038279, AN10471452 - B-11-15 Inferring TCP Congestion Control Algorithm Using One Way Packet Logs
Yongxialee Leelianou; Yamamoto Ryo; Ohzahata Satoshi; Kato Toshihiko
The Institute of Electronics, Information and Communication Engineers, 01 Mar. 2016, Proceedings of the IEICE General Conference, 2016, 2, 395-395, Japanese, 110010038276, AN10471452 - BS-2-5 Load Reduction Method Based on Hop Count and Neighbour Relation in Opportunistic Routing
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 01 Mar. 2016, Proceedings of the IEICE General Conference, 2016, 2, "S-6"-"S-7", Japanese, 110010038463, AN10471452 - A Cooperative Multicast Method Using Neighbour Nodes for Ad Hoc Networks
荒木 涼太郎; 山崎 託; 山本 嶺
電子情報通信学会, 15 Oct. 2015, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 115, 251, 31-36, Japanese, 0913-5685, 40020650304, AA11546431 - A End-to-End Reliability Enhancement Scheme for DTN
Saw David San; Ryo Yamamoto; Yoshiaki Tanaka
09 Sep. 2015, IEICE Society Conference, English - Automatic Web Application Test Case Generation Through Page Object
Bing Yu; Ryo Yamamoto; Yoshiaki Tanaka
08 Sep. 2015, IEICE Society Conference, English - Opportunistic Routing : Based on Terminal Density and Terminal Distance
山崎 託; 山本 嶺; 三好 匠
電子情報通信学会, 01 Sep. 2015, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 115, 206, 195-200, Japanese, 0913-5685, 40020617600, AN1054106X - BS-6-3 Automatic Test Case Generation for Web Applications through Page Object(BS-6.Network and service Design, Control and Management)
Yu Bing; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 25 Aug. 2015, Proceedings of the Society Conference of IEICE, 2015, 2, "S-21"-"S-22", English, 110009984241, AN10489017 - BS-6-7 Advanced Principal-Agent Theory Based Packet Forwarding Incentive Strategy with Reinforcement Learning in Ad Hoc Networks(BS-6.Network and service Design, Control and Management)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 25 Aug. 2015, Proceedings of the Society Conference of IEICE, 2015, 2, "S-28"-"S-29", English, 110009984245, AN10489017 - BS-6-12 An End-to-End Reliability Enhancement Scheme for DTN(BS-6.Network and service Design, Control and Management)
San Saw David; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 25 Aug. 2015, Proceedings of the Society Conference of IEICE, 2015, 2, "S-38"-"S-39", English, 110009984250, AN10489017 - B-6-69 Retransmission Control Method Based on Forwarding Eligibility for Opportunistic Routing
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 25 Aug. 2015, Proceedings of the Society Conference of IEICE, 2015, 2, 69-69, Japanese, 110009983918, AN10489017 - Introduction and Simulation Analysis of a Novel LDoS Attack in Mobile Ad Hoc Networks
Bo Yang; Bing Yu; Ryo Yamamoto; Yoshiaki Tanaka
13 Mar. 2015, IEICE General Conference, English - Load Balancing Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks
Tatsuya Shirai; Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi; Yoshiaki Tanaka
12 Mar. 2015, IEICE General Conference, English - DTN Reliability Enhancement with Custody Transfer Retransmission
Saw David San; Ryo Yamamoto; Yoshiaki Tanaka
10 Mar. 2015, IEICE General Conference, English - Opportunistic Routing Using Fixed Nodes for Load Balancing in Ad Hoc Networks
SHIRAI Tatsuya; YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Ad hoc network is regarded as an optimal solution to establish network on poor quality environments such as stricken areas due to its simple and low cost operation. However, conventional routing methods cause centralization of packet transmission load except for the occurrence of dynamic network topology changes. In this paper, we propose a novel location-based load balancing method that can decentralize packet transmission load of each node in the whole networks. The proposed method opportunistically selects a route for data transmission from several route candidates prepared for load balancing. The performance and the efficiency of the proposed method are also clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 02 Mar. 2015, IEICE technical report, 114, 477, 13-18, Japanese, 0913-5685, 110010018631, AA11546431 - BS-3-5 DTN Reliability Enhancement with Custody Transfer Retransmission(BS-3. Advanced Technologies in the Design, Management and Control for Future Innovative Communication Network)
San Saw David; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 24 Feb. 2015, Proceedings of the IEICE General Conference, 2015, 2, "S-18"-"S-19", English, 110009928706, AN10471452 - BS-3-17 Load Balancing Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks(BS-3. Advanced Technologies in the Design, Management and Control for Future Innovative Communication Network)
Shirai Tatsuya; Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 24 Feb. 2015, Proceedings of the IEICE General Conference, 2015, 2, "S-42"-"S-43", English, 110009928711, AN10471452 - BS-3-47 Introduction and Simulation Analysis of a Novel LDoS Attack in Mobile Ad Hoc Networks(BS-3. Advanced Technologies in the Design, Management and Control for Future Innovative Communication Network)
Yang Bo; Yu Bing; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 24 Feb. 2015, Proceedings of the IEICE General Conference, 2015, 2, "S-97"-"S-98", English, 110009928304, AN10471452 - BS-4-10 Opportunistic Routing Using Prioritized Forwarder and Hop-by-Hop Retransmission Control
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 24 Feb. 2015, Proceedings of the IEICE General Conference, 2015, 2, "S-136"-"S-137", Japanese, 110009928738, AN10471452 - Performance Analysis of Opportunistic Routing Using Prioritized Forwarders and Hop-by-Hop Retransmission Control
YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi; ASAKA Takuya; TANAKA Yoshiaki
In ad hoc networks, frequent packet losses and topological changes cause unstable communications. To solve this problem, OR (opportunistic routing) has been proposed. In OR, each terminal decides whether to forward a received packet based on a random backoff time. However, forwarder terminals must wait for the expiration of the random backoff timer before forwarding the packet. Moreover, it is difficult to obtain a transmission path diversity under a sparse environment. This paper proposes a forwarder selection method that uses the prioritized forwarders to reduce the backoff time. In addition, the proposed method also performs a retransmission control which is fit for the sparse environment. The performance and the effectiveness of the proposed method are clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 23 Feb. 2015, IEICE technical report, 114, 477, 19-24, Japanese, 0913-5685, 110010018632, AA11546431 - Passive Relay Suppression in Stochastic Broadcast for VANET
Xing Fan; Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
24 Sep. 2014, IEICE Society Conference, English - Incentive-Punishment Combined Bilateral Currency Framework against Dropping Packet Problem in Ad Hoc Networks
Bo Yang; Zhimu Huang; Xing Fan; Ryo Yamamoto; Yoshiaki Tanaka
24 Sep. 2014, IEICE Society Conference, English - Location-based Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks
SHIRAI Tatsuya; YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
To increase the availability of networks, there are a number of studies focusing on ensuring stable network environments on the unexpected occurrence of huge disaster. Above all, ad hoc networks are well suited for these situations due to its simple and rapid deployment of wireless networks at low costs. Several location-based routing protocols are proposed to enhance the performance by establishing stable transmission route. Scalability, however, are not taken into consideration due to the limitation of node mobility management on most location-based studies. In this paper, we propose a novel location-based routing method can improve communication efficiency by performing opportunistic link selections. Performance of the proposed method is verified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 11 Sep. 2014, Technical report of IEICE. CQ, 114, 209, 53-58, Japanese, 0913-5685, 110009950346, AN1054106X - BS-6-30 Reliable Message Transfer with Custodians in Delay Tolerant Networks(BS-6.Network and service Design, Control and Management)
San Saw David; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 09 Sep. 2014, Proceedings of the Society Conference of IEICE, 2014, 2, "S-94"-"S-95", English, 110009883803, AN10489017 - BS-6-15 A Novel Battery-Aware Probabilistic Routing Protocol in Ad Hoc Networks(BS-6.Network and service Design, Control and Management)
Huang Zhimu; Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 09 Sep. 2014, Proceedings of the Society Conference of IEICE, 2014, 2, "S-64"-"S-65", English, 110009883788, AN10489017 - BS-6-14 Passive Relay Suppression in Stochastic Broadcast for VANET(BS-6.Network and service Design, Control and Management)
Fan Xing; Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 09 Sep. 2014, Proceedings of the Society Conference of IEICE, 2014, 2, "S-62"-"S-63", English, 110009883787, AN10489017 - BS-6-18 Location-based Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks(BS-6.Network and service Design, Control and Management)
Shirai Tatsuya; Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 09 Sep. 2014, Proceedings of the Society Conference of IEICE, 2014, 2, "S-70"-"S-71", English, 110009883791, AN10489017 - BS-6-3 Efficient Association Control Algorithm for Wireless LANs Using Simulated Annealing(BS-6.Network and service Design, Control and Management)
Yu Bing; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 09 Sep. 2014, Proceedings of the Society Conference of IEICE, 2014, 2, "S-40"-"S-41", English, 110009883776, AN10489017 - BS-3-4 Opportunistic Routing Using Prioritized Forwarder in Ad Hoc Networks
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 09 Sep. 2014, Proceedings of the Society Conference of IEICE, 2014, 2, "S-5"-"S-6", Japanese, 110009883755, AN10489017 - A Novel Enhanced Max-Min Residual Battery-Aware Routing Protocol in Ad Hoc Networks
HUANG Zhimu; YANG Bo; YAMAMOTO Ryo; TANAKA Yoshiaki
An ad hoc network is characterized as a self-organized multi-hop wireless network. It does not rely on any pre-existing network infrastructures. Instead of this, each node can participate in the routing of packets to other nodes. However, each node in ad hoc networks is typically powered by batteries with a limited energy supply, and it is difficult to replace or to recharge them. Thus, it is crucial to consider how to conserve energy to maximize the network lifetime as an issue in the design of routing protocols. In conventional routing protocols, however, shortest-route algorithms are commonly used. Without considering energy consumption, nodes that are overused would drain their energy and the whole network would become partitioned. As concerns this problem, many battery-aware routing protocols have been proposed from a variety of perspectives. In this paper, we propose a novel enhanced max-min residual battery-aware routing protocol called EMAODV. It is expected to prolong the network lifetime by selecting an optimal route based on the battery conditions of the whole network. By EMAODV, the routes with insufficient battery energy are always avoided. If all the nodes in ad hoc networks have sufficient battery energy, a shortest route is selected. From the results of the performance evaluation, EMAODV shows a better performance in terms of prolonging the network lifetime., The Institute of Electronics, Information and Communication Engineers, 31 Jul. 2014, IEICE technical report, 114, 163, 149-154, English, 0913-5685, 110009945596, AA11546431 - A Cooperative Packet Forwarding Method Using Neighbour Nodes for Ad Hoc Networks
ARAKI Ryotaro; YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi
Recently, ad hoc networks composed only of mobile wireless terminals (nodes) attract attention in proportion as a development of wireless technology. In ad hoc networks, communication with nodes that cannot be directly connected is available by using multi-hop transmissions in which each node sequentially relays data. Routing protocols such as AODV(ad-hoc on-demand distance vector) construct routes before data communication begins, and then data packets are transmitted along the routes. When a link on the data transmission route becomes unavailable, delay occurs due to restructuring an alternative route. This paper proposes a packet forwarding method using route neighbour nodes to improve packet transmission efficiency by opportunistic forwarding. The proposed method achieves an improvement of the connection probability and decreases the end-to-end delay., The Institute of Electronics, Information and Communication Engineers, 17 Apr. 2014, IEICE technical report, 114, 6, 45-50, Japanese, 0913-5685, 110009874945, AA11546431 - Reliability Enhancement for Stochastic Broadcast in VANET
Xing Fan; Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
21 Mar. 2014, IEICE General Conference, English - A Reliable Routing Method Using Local Repair for Ad Hoc Multicasting
Tatsuya Shirai; Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
19 Mar. 2014, IEICE General Conference, English - A Novel Min-Max Residual Battery-Aware Routing Protocol for Ad Hoc Networks
Zhimu Huang; Ryo Yamamoto; Yoshiaki tanaka
19 Mar. 2014, IEICE General Conference, English - B-6-159 Opportunistic Routing Based on Forwarding History in Ad Hoc Networks
Yamamoto Ryo; Yamazaki Taku; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 04 Mar. 2014, Proceedings of the IEICE General Conference, 2014, 2, 159-159, Japanese, 110009849650, AN10471452 - B-6-157 A Packet Forwarding Method Using Route Neighbour Nodes for Ad Hoc Networks
ARAKI Ryotaro; YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi
The Institute of Electronics, Information and Communication Engineers, 04 Mar. 2014, Proceedings of the IEICE General Conference, 2014, 2, 157-157, Japanese, 110009849648, AN10471452 - BS-1-24 A Novel Packet Forwarding Incentive Strategy based on Principal-Agent Theory in Ad Hoc Networks(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 04 Mar. 2014, Proceedings of the IEICE General Conference, 2014, 2, "S-46"-"S-47", English, 110009850021, AN10471452 - BS-1-22 A Reliable Routing Method Using Local Repair for Ad Hoc Multicasting(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Shirai Tatsuya; Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 04 Mar. 2014, Proceedings of the IEICE General Conference, 2014, 2, "S-42"-"S-43", English, 110009850019, AN10471452 - BS-1-23 A Novel Min-Max Residual Battery-Aware Routing Protocol for Ad Hoc Networks(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Huang Zhimu; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 04 Mar. 2014, Proceedings of the IEICE General Conference, 2014, 2, "S-44"-"S-45", English, 110009850020, AN10471452 - BS-1-74 Reliability Enhancement for Stochastic Broadcast in VANET(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Fan Xing; Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 04 Mar. 2014, Proceedings of the IEICE General Conference, 2014, 2, "S-139"-"S-140", English, 110009850071, AN10471452 - BS-1-13 Parameter Selection Method for Accurate Available Bandwidth Estimation by pathChirp(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Dai Tianao; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 04 Mar. 2014, Proceedings of the IEICE General Conference, 2014, 2, "S-25"-"S-26", English, 110009850010, AN10471452 - A Principal-Agent Theory based Game Theoretic Incentive Method for Packet Forwarding in Ad Hoc Networks
YANG Bo; YAMAMOTO Ryo; TANAKA Yoshiaki
Dropping packets is one of the most devastating threatens on a performance of ad hoc networks. Among various motivations of dropping packets, selfishness and malicious attack are the main two factors. However, there are still some other cases of dropping packets caused by networking context such as mobility, congestion, and traffic load. Incentive mechanism is a typical method to induce node to participate in relaying packets for other adjacent nodes. However, most of them neglect a noise of dropping packets by networking context or just omit this important factor for brevity. In this paper, a principal-agent theory based game theoretic incentive method is proposed for encouraging each node contributing into packet forwarding, which will result in a high performance cooperative network. Holmstrom-Milgrom model, which is a simplified principal-agent model with a linear reward scheme, is implemented to model the relationship between two adjacent nodes. In each two pair-wise nodes model, the node requests for relaying packets is seen as a principal node while the node forwarding packets is denoted as an agent node. A credit given by principal node to agent node as incentive compensation is the contract, which is designed by principal node based on agent node's effort in forwarding packets. Dropping packets by networking is also taken into consideration as an exogenous uncertainty. It is proven that there is an optimal incentive strategy can encourage packet forwarding even under noise effect. Numerical evaluations are also conducted to evaluate the performance of the proposed method., The Institute of Electronics, Information and Communication Engineers, 24 Jan. 2014, Technical report of IEICE. CQ, 113, 405, 11-16, English, 0913-5685, 110009822171, AN1054106X - Encouragement Talk : Routing Method with Local Repair for Ad Hoc Multicasting
SHIRAI Tatsuya; YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Due to the inherent broadcast nature of wireless communication, ad hoc networks are well suited for multicast that can more efficiently deliver information from source nodes to many client nodes simultaneously. In ad hoc networks, however, links are established and disconnected dynamically due to the transmission interference and node movement. In conventional multicast routing protocols, the topology dynamics cause route reconstruction, and it may lead delay increase and delivery ratio degradation. In this paper, a novel multicast routing protocol is proposed. This protocol can improve packet delivery rate of ODMRP(On-demand multicast routing protocol) by making use of link failure detection mechanism as well as nodes' mobility prediction based local repair mechanism. The performance and the efficiency of the proposed method are also clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 19 Dec. 2013, IEICE technical report, 113, 360, 149-154, Japanese, 0913-5685, 110009901861, AA11546431 - A Block-based Transmission with Two-hop Reliability Control for Ad Hoc Networks
YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi; ASAKA Takuya
In ad hoc networks, frequent topological change, delay variation, and high packet loss rate are encountered as the result of unstable wireless communication. TCP/IP, due to its end-to-end control, cannot adapt to such a unstable network environment. As concerns this problem, A block transmission method, that uses hop-by-hop reliability control and burst transmission, has been proposed. Due to the block-by-block reliability control, however, this method cannot realize packet-by-packet route diversity. This paper proposes an efficient block transmission method with 2-hop reliability control. The performance and the effectiveness of the proposed method is clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 12 Dec. 2013, IEICE technical report, 113, 360, 143-148, Japanese, 0913-5685, 110009901860, AA11546431 - Simulation Analysis of Flooding-Based DDoS Attack in Ad Hoc Networks
Bo Yang; Xing Fan; Ryo Yamamoto; Yoshiaki Tanaka
17 Sep. 2013, IEICE Society Conference, English - BS-7-9 Direction-Based Relay Selection Scheme for Alert Message Broadcast in VANET
Fan Xing; Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 03 Sep. 2013, Proceedings of the Society Conference of IEICE, 2013, 2, "S-49"-"S-50", English, 110009730226, AN10489017 - BS-7-12 A Power-Aware Routing Protocol in Ad Hoc Networks
Huang Zhimu; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 03 Sep. 2013, Proceedings of the Society Conference of IEICE, 2013, 2, "S-55"-"S-56", English, 110009730229, AN10489017 - Mobility-Based Opportunistic Routing for Ad Hoc Networks
Yamamoto Ryo; Yamazaki Taku; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 03 Sep. 2013, Proceedings of the Society Conference of IEICE, 2013, 2, 66-66, Japanese, 110009729791, AN10489017 - A BIock Transmission Method Using Broadacast for Ad Hoc Networks
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya
The Institute of Electronics, Information and Communication Engineers, 03 Sep. 2013, Proceedings of the Society Conference of IEICE, 2013, 2, 68-68, Japanese, 110009729793, AN10489017 - Opportunistic Routing Based on End-to-End Delay Estimation for MANET
YAMAMOTO Ryo; YAMAZAKI Taku; MIYOSHI Takumi; TANAKA Yoshiaki
In ad hoc networkserminals' mobility may cause dynamic change of network topology, which makes it difficult to establish stable transmission routes. As concerns this problem, opportunistic routing (OR), which does not rely on any specific route and forwards packets opportunistically using stable links, has been proposed. In order to achieve efficient packet forwarding in ad hoc networks, this paper proposes a new OR protocol based on the estimated end-to-end delay that is calculated from terminals' queue lengths and links' transmission success rates. The proposed method tries to use the terminals that have the shorter delay to the destination terminal as forwarders for realizing shorter end-to-end delay and higher throughput. The performance and the efficiency of the proposed method are also clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 07 Mar. 2013, IEICE technical report, 112, 463, 325-330, Japanese, 0913-5685, 110009712125, AA11546431 - B-6-139 Delay-Based Opportunistic Routing f<)r Ad Hoc Networks
Yamamoto Ryo; Yamazaki Taku; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 05 Mar. 2013, Proceedings of the IEICE General Conference, 2013, 2, 139-139, Japanese, 110009761063, AN10471452 - BS-1-6 Energy Saving Strategy Based on SPIN Routing Protocol in Wireless Sensor Network
Abidakun Oluwatuyi Rufus; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 05 Mar. 2013, Proceedings of the IEICE General Conference, 2013, 2, "S-11"-"S-12", English, 110009763173, AN10471452 - BS-1-45 Game Theoretic Analysis of Reputation based IDS for Preventing Black Hole Attack in MANETs
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 05 Mar. 2013, Proceedings of the IEICE General Conference, 2013, 2, "S-88"-"S-89", English, 110009763212, AN10471452 - BS-1-44 Alternate Route Construction Method Using Node Mobility Prediction for Ad Hoc Multicasting
Shirai Tatsuya; Yamamoto Ryo; Yamazaki Taku; Miyoshi Takumi
The Institute of Electronics, Information and Communication Engineers, 05 Mar. 2013, Proceedings of the IEICE General Conference, 2013, 2, "S-86"-"S-87", English, 110009763211, AN10471452 - Cooperative Retransmission Method Using Neighbour Nodes for Ad Hoc Networks
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi
In ad hoc networks, radio interference and nodes' mobility may cause frame loss. When the frame losses occur continuously, the sender node assumes the link failure, and then routing protocols on the network layer renew the route between the source and the destination. The route reconstruction, though, increases network load and transmission delay. For solving problem, some retransmission and relay control methods have been proposed. In these methods, neighbour nodes overhear the transmitted frames and autonomously recover the lost frames. The conventional retransmission methods may increase the transmission delay under the bursty frame losses. In contrast, the conventional relay method has the processing overhead and slow adaptation problem under the sparse frame losses. This paper proposes an efficient and lightweight method in which neighbour nodes adaptively retransmit the lost frames considering the frequency of frame losses. The performance and the effectiveness of the proposed method are clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 13 Dec. 2012, Technical report of IEICE. RCS, 112, 351, 89-94, Japanese, 0913-5685, 110009699019, AN10060822 - On Why Distributed Monitoring Needs Distributed PASTA
Marat Zhanikeev; Ryo Yamamoto; Yoshiaki Tanaka
12 Sep. 2012, IEICE Society Conference, English - BS-5-37 A Novel Mitigation Strategy against Malicious Actions based on Risk Evaluation Aware Trust Management in MANETs(BS-5. Network and Service Design, Control and Management)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 28 Aug. 2012, Proceedings of the Society Conference of IEICE, 2012, 2, "S-98"-"S-99", English, 110009592130, AN10489017 - BS-2-3 Continuous Retransmission Method Using Neighbour Nodes for Ad Hoc Networks
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi
The Institute of Electronics, Information and Communication Engineers, 28 Aug. 2012, Proceedings of the Society Conference of IEICE, 2012, 2, "S-5", Japanese, 110009592080, AN10489017 - B-6-16 Neighbour Traffic Based Routing Mechanism for Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 28 Aug. 2012, Proceedings of the Society Conference of IEICE, 2012, 2, 16-16, Japanese, 110009591653, AN10489017 - Capturing QoS Context by Alternative Flow Monitoring in Clouds
Marat Zhanikeev; Ryo Yamamoto; Yoshiaki Tanaka
22 Mar. 2012, IEICE General Conference, English - Alternative Packet Sampling for Improved Fairness and Function
Marat Zhanikeev; Ryo Yamamoto; Yoshiaki Tanaka
20 Mar. 2012, IEICE General Conference, English - Mobile Agent Based Wormhole Attack Detection in MANET
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
20 Mar. 2012, IEICE General Conference, English - B-6-13 DDoS Attack Detection and Avoidance Method Based on Relay Priority for Ad Hoc Networks
Wang Qi; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 06 Mar. 2012, Proceedings of the IEICE General Conference, 2012, 2, 13-13, Japanese, 110009462486, AN10471452 - B-6-10 A Rerouting Method with Neighbour Cooperation for Ad Hoc Networks
YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi
The Institute of Electronics, Information and Communication Engineers, 06 Mar. 2012, Proceedings of the IEICE General Conference, 2012, 2, 10-10, Japanese, 110009462483, AN10471452 - B-6-12 Autonomous Load Evaluation Method for Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 06 Mar. 2012, Proceedings of the IEICE General Conference, 2012, 2, 12-12, Japanese, 110009462485, AN10471452 - BS-3-12 Mobile Agent Based Wormhole Attack Detection in MANET(BS-3. Management and Control Technologies for Innovative Networks)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 06 Mar. 2012, Proceedings of the IEICE General Conference, 2012, 2, "S-23"-"S-24", English, 110009463187, AN10471452 - BS-3-4 Alternative Packet Sampling for Improved Fairness and Function(BS-3. Management and Control Technologies for Innovative Networks)
Zhanikeev Marat; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 06 Mar. 2012, Proceedings of the IEICE General Conference, 2012, 2, "S-7"-"S-8", English, 110009463179, AN10471452 - A Wormhole Attack Mitigation Strategy Based on Mobile Agent
YANG Bo; YAMAMOTO Ryo; TANAKA Yoshiaki
Mobile ad hoc network (MANET) is a self-organized, infrastructure less, multi-hop network, which is highly vulnerable to various attacks. Among various attacks, DoS (Denial of Service) attack that may lead to the collapse of the network performs as a disaster in the network. Wormhole attack, a particularly devastating DoS attack, is taken by two or more colluding nodes that create a virtual tunnel to do further malicious actions. The tunnel emulates shorter links in the network and can be employed to transport packets between end points of the tunnel. By using wormhole attack, malicious nodes can not only eavesdrop packet contents but also modify or drop legitimate packets. Wormhole attack is even more harmful than other kinds of DoS attacks for it can be launched even without getting any cryptographic keys or compromising the existing nodes. This paper proposes a mobile agent based strategy to overcome not only the closed wormhole attack but also the half open and open wormhole attack. Both wormhole using encapsulation and wormhole using out-of-band channel are taken into consideration and the proposed method shows a good performance in detecting the malicious nodes., The Institute of Electronics, Information and Communication Engineers, 01 Mar. 2012, IEICE technical report, 111, 468, 149-154, English, 0913-5685, 110009545020, AA11546431 - DDoS Attack Detection and Avoidance Mechanism Using Relay Priority for MANET
WANG Qi; YAMAMOTO Ryo; TANAKA Yoshiaki
DDoS attack is becoming a serious problem in mobile ad hoc networks. In the attack, widely distributed malicious nodes flood packets into the network, and exhaust resources of the network such as bandwidth, computing power, etc. As concerns this, some defence methods such as confirmation-based, traffic analysis-based methods are proposed to detect the malicious nodes. However, the conventional defence methods may cause delay increase and nodes' load increase. In order to solve these problems, this paper proposes a novel defence method against the DDoS attack which detects malicious nodes using relay priority based on time interval of route requests. The performance and the effectiveness of the proposed method are shown by computer simulation., The Institute of Electronics, Information and Communication Engineers, 15 Dec. 2011, IEICE technical report, 111, 344, 149-152, Japanese, 0913-5685, 110009466650, AA11546431 - A Target Tracking Algorithm Considering Energy Balance in WSNs
Vinh Tran-Quang; Nguyen Huu Phat; Ryo Yamamoto; Takumi Miyoshi
15 Sep. 2011, IEICE Society Conference, English - BS-6-34 A Target Tracking Algorithm Considering Energy Balance in WSNs(BS-6. Planning, Control and Management on Networks and Services)
Tran-Quang Vinh; Huu Phat Nguyen; Yamamoto Ryo; Miyoshi Takumi
The Institute of Electronics, Information and Communication Engineers, 30 Aug. 2011, Proceedings of the Society Conference of IEICE, 2011, 2, "S-96"-"S-97", English, 110008725361, AN10489017 - BS-6-39 A Trust-aware Management Strategy Against Black Hole Attacks in MANET(BS-6. Planning, Control and Management on Networks and Services)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 30 Aug. 2011, Proceedings of the Society Conference of IEICE, 2011, 2, "S-106"-"S-107", English, 110008725366, AN10489017 - B-6-64 Load Balancing Method by Estimating Traffic Load in Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 30 Aug. 2011, Proceedings of the Society Conference of IEICE, 2011, 2, 64-64, Japanese, 110008724891, AN10489017 - B-6-69 DDoS Attack Detection and Avoidance in MANET Based on Relay Nodes' Inference
Wang Qi; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 30 Aug. 2011, Proceedings of the Society Conference of IEICE, 2011, 2, 69-69, Japanese, 110008724896, AN10489017 - Routing Method by Estimating Traffic Load in Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
In ad hoc networks, terminals' mobility may cause dynamic changes of network topology and terminal density which may increase the traffic at a certain terminal or in a certain location. As concerns this problem, some routing-based load balancing methods which are based on traffic or transmission success rate have been proposed. However, these conventional methods consider only the load on the transmission route, and this may increase the load at neighbouring terminals of the route. In order to achieve efficient load balanced routing in ad hoc networks, this paper proposes a load balancing method based on an estimated traffic around each terminal. The proposed method monitors the neighbouring terminals' transmission and estimates a relative load based on it for better route selection. The performance and the efficiency of the proposed method are also clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 14 Jul. 2011, IEICE technical report, 111, 144, 51-56, Japanese, 0913-5685, 110008800192, AA11546431 - Neighbourhood-Traffic Adaptive Load Balancing Method in Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
In ad hoc networks, dynamic changes of the network topology caused by the terminals' mobility may increase the traffic load on a certain terminal or in a certain location. As concerns this problem, some traffic-based routing mechanisms to balance the load have been proposed. However, it is hard to adapt them to the environment where the traffic changes in a short period. Furthermore, these conventional methods do not consider the load on the neighbouring terminals of the transmission route. In order to achieve efficient load balancing in ad hoc networks, this paper proposes a load balancing method based on neighbouring terminals' traffic. The proposed method controls the transmission rate depending on the neighbouring terminals' load and the transmission route. The performance and the efficiency of the proposed method is also clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 14 Apr. 2011, IEICE technical report, 111, 8, 19-24, Japanese, 0913-5685, 110008688300, AA11546431 - B-6-85 Transmission Rate Control Based on Traffic Load in Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 28 Feb. 2011, Proceedings of the IEICE General Conference, 2011, 2, 85-85, Japanese, 110008577007, AN10471452 - B-6-84 Wormhole Attack Detection and Avoidance in MANET Using Observation Report from Neighbour Nodes
Wang Qi; Yamamoto Ryo; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 28 Feb. 2011, Proceedings of the IEICE General Conference, 2011, 2, 84-84, Japanese, 110008577006, AN10471452 - Wormhole Attack Detection and Avoidance Method Using Observation Report from Neighbour Nodes
WANG Qi; YAMAMOTO Ryo; TANAKA Yoshiaki
Wormhole attack is becoming a serious problem in ad hoc networks. In the attack, a pair of malicious nodes establishes a tunnel between two end points, and collects the transmission route of the neighbouring nodes. Therefore, the data on the route might be wiretapped, falsified, and annulled by the malicious nodes. To avoid the attack, some defence method is necessary to detect the malicious nodes. However, the conventional defence methods may cause delay increase, and their scalability is limited. In order to solve these problems, this paper proposes a novel defence method against the wormhole attack which detects neighbouring malicious nodes using observation report by normal nodes. The performance and the effectiveness of the proposed method are shown by computer simulation., The Institute of Electronics, Information and Communication Engineers, 24 Feb. 2011, IEICE technical report, 110, 448, 455-460, Japanese, 0913-5685, 110008688246, AA11546431 - Load Balancing Method Based on Neighbouring Terminals' Activity in Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
In ad hoc networks, it is hard to realize the centralized management of network state, and dynamic changes of the network topology caused by the terminals' mobility may increase the traffic load on a certain terminal or in a certain location. As concerns this problem, some routing mechanisms to balance the network load have been proposed. However, it is hard to adapt them to the environment where the traffic changes in a short period. Furthermore, these conventional methods only consider the load on the transmission routes. For achieving efficient load balancing in ad hoc networks, this paper proposes a load balancing method based on the activity of neighbouring terminals. The proposed method controls the transmission rate depending on the states of the neighbouring terminals and of the transmission route. The performance and efficiency of the proposed method is also clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 09 Dec. 2010, IEICE technical report, 110, 339, 79-84, Japanese, 0913-5685, 110008675447, AA11546431 - Cross Layer Control of Transmission Rate for Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
In ad hoc networks, it is hard to unify the management of network state due to an autonomously decentralized manner for network construction mechanism by mobile terminals. Topological changes may increase the traffic load on a certain terminal or location, and thus that will degrade the fairness of the whole network. As concerns this problem, the methods that modify routing mechanisms to balance the traffic load have been proposed. However, they need extra control sequence for the route modification and hardly adapt to the environment where the traffic changes in a short period. In this paper, to balance the load efficiently in ad hoc networks, cross-layer transmission rate control method is proposed. The proposed method controls the transmission rate, by limiting the maximum, depending on the state of the transmission route, and thus avoids the concentrated traffic and collisions. The performance and efficiency of the proposed method is also clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 08 Jul. 2010, IEICE technical report, 110, 126, 41-46, Japanese, 0913-5685, 110008096263, AA11546431 - B-6-138 Load Balancing Method with Cross Layer Design on Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 02 Mar. 2010, Proceedings of the IEICE General Conference, 2010, 2, 138-138, Japanese, 110007869253, AN10471452 - アドホックネットワークにおける往復遅延時間を 用いた適応形トランスポートプロトコル
山本 嶺; 三好 匠; 田中良明
2010, 電子情報通信学会論文誌(B), vol.J93-B, 5, 735-736 - Characteristic Analysis of RTT-based Window Control Method
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
In ad hoc networks, since each terminal transmits data using radio devices, segment loss frequently occurs owing to radio interference or node mobility. TCP Reno uses a segment loss to detect congestion and tries to avoid it by shrinking the congestion window size. In ad hoc networks, however, segment losses are caused by not only congestion but also interference and node mobility. Thus, unnecessary congestion avoidance decreases communication efficiency. As concern this, to improve communication efficiency, authors proposed RTT-based window control method. However, since a parameters for window control is a constant in the method, there is a possibility that the threshold would not be appropriate value for some cases. In this paper, the effect of the parameters on communication efficiency is analyzed to set the optimal parameters. This will yield better performance., The Institute of Electronics, Information and Communication Engineers, 03 Dec. 2009, IEICE technical report, 109, 326, 79-84, Japanese, 0913-5685, 110007866983, AA11546431 - B-6-5 Window Control Method Considering Fairness for Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
The Institute of Electronics, Information and Communication Engineers, 01 Sep. 2009, Proceedings of the Society Conference of IEICE, 2009, 2, 5-5, Japanese, 110007869940, AN10489017 - BS-4-31 Flow Control Method Considering Fairness for Ad Hoc Networks(BS-4. System, control and design technologies for emerging network)
YAMAMOTO Ryo; MIYOSHI Takumi
The Institute of Electronics, Information and Communication Engineers, 04 Mar. 2009, Proceedings of the IEICE General Conference, 2009, 2, "S-61"-"S-62", English, 110007099415, AN10471452 - RTT Based Flow Control Method Considering Fairness for Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi
In ad hoc netowrks, since each terminal transmits data using radio devices, segment loss frequently occurs owing to radio interference or node mobility. TCP Reno uses a segment loss to detect a congestion and tries to avoid it by shrinking the congestion window size. In ad hoc networks, however, segment losses are caused by not only congestion but also interference and node mobility. Thus, unnecessary congestion avoidance decreases a communication efficiency. As concern this, TCP Westwood that uses bandwidth estimation for congestion avoidance and TCP Vegas that uses RTT to determine the network state are proposed. This paper proposes a novel transport protocol using the relative RTT to determine the network state and considering the fairness among protocols and among terminals. The performance and effectiveness of the proposed method is clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 24 Feb. 2009, IEICE technical report, 108, 457, 183-188, Japanese, 0913-5685, 110007327638, AA11546431 - Flow Control Method Using Round Trip Time on Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi
In ad hoc networks, since each terminal transmits data using radio devices, link failure or segment loss frequently occurs owing to interferences or obstacles. If TCP Reno is used in ad hoc networks, the congestion window size shirnks into half to avoid congestion when segment losses are observed. However, segment losses are caused by not only congestion but also interference and obstacles. Thus, unnecessary window size shrink is invoked and this decreases the end-to-end throughput. As concerns this, TCP Westwood that uses bandwidth estimation for window size shrink and TCP Vegas that uses expected and measured throughput for flow control are proposed. This paper proposes a novel flow control method using the round trip time and the method for reducing redundant segment retransmission. The performance and effectiveness of the proposed method is clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 11 Dec. 2008, IEICE technical report, 108, 359, 95-100, Japanese, 0913-5685, 110007110366, AA11546431 - Temporary Route Modification Method for Ad Hoc Networks
YOSHIZAWA Takeshi; YAMAMOTO Ryo; MIYOSHI Takumi
In ad hoc networks, since nodes set up links with each other by wireless communication, link failures may occur due to radio interferences or obstacles. If a link failure occurs on the route, the sender node must reconstruct its end-to-end transmission route. That increases network traffic caused by route discovery packets. For avoiding this problem, some retransmission control methods using neighbor nodes have been proposed. However, continuous frame loss increases retransmission delay, and may cause route destroy. This paper proposes a temporary route modification method for ad hoc networks. The performance and effectiveness of the proposed method is clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 10 Jul. 2008, IEICE technical report, 108, 134, 67-70, Japanese, 0913-5685, 110006987399, AA11546431 - Transport Protocol with Adaptive Congestion Control on Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi
In ad hoc networks, since each terminal transmits data using radio devices, link failure or segment loss frequently occurs owing to interferences or obstacles. When TCP communication is used in ad hoc networks, the congestion window size shrinks as the segment losses occur, and thus the end-to-end throughput degrades. More- over, TCP maintains the own state using control segment, which increases the network load. This paper proposes a novel flow control method using round trip time and simplified state transition to increase overall transmission efficiency. The performance and effectiveness of the proposed method is clarified by computer simulation., The Institute of Electronics, Information and Communication Engineers, 15 May 2008, IEICE technical report, 108, 31, 55-60, Japanese, 0913-5685, 110006861886, AA11546431 - B-21-10 Temporary Relay Control Method Using Neighbor Nodes for Ad Hoc Networks
YOSHIZAWA Takeshi; YAMAMOTO Ryo; MIYOSHI Takumi
The Institute of Electronics, Information and Communication Engineers, 05 Mar. 2008, Proceedings of the IEICE General Conference, 2008, 2, 611-611, Japanese, 110006871277, AN10471452 - B-21-43 Transmission Control Method with Neighbor Terminal for Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi
The Institute of Electronics, Information and Communication Engineers, 07 Mar. 2007, Proceedings of the IEICE General Conference, 2007, 2, 632-632, Japanese, 110006464388, AN10471452
Lectures, oral presentations, etc.
- Virtual Network Embedding Based on Property of Substrate Network in Multi-service Environments
Yamato Negishi; Satoshi Ohzahata; Ryo Yamamoto
Japanese, 電子情報通信学会技術報告, 情報通信マネジメント研究会
22 Mar. 2024
22 Mar. 2024- 22 Mar. 2024 - A Dynamic Routing Table Management Method using Name Resolution Service and Smart Contract over CCN
Aoi Namai; Satoshi Ohzahata; Ryo Yamamoto
Japanese, 電子情報通信学会技術報告, 情報通信マネジメント研究会
22 Mar. 2024
22 Mar. 2024- 22 Mar. 2024 - Quality Enhancement of WebRTC Real-Time Streaming Using Dynamic Control of Encoding Parameter for Scalable Video Coding
Naoki Eda; Satoshi Ohzahata; Ryo Yamamoto
Japanese, 電子情報通信学会技術報告, 情報通信マネジメント研究会
21 Mar. 2024
21 Mar. 2024- 21 Mar. 2024 - 空域の混雑と利用者の公平性を考慮したUAV分散管理手法
原口隆彦; 片田寛志; 山崎 託; 三好 匠; 山本 嶺; 上田清志
Japanese, 電子情報通信学会技術報告, ネットワークシステム研究会
01 Mar. 2024
01 Mar. 2024- 01 Mar. 2024 - Improving Training Data of Object Detection with Multiple Object Tracking for Federated Learning
Yuta Ikeda; Yuki Nakahama; Satoshi Ohzahata; Ryo Yamamoto
Japanese, 電子情報通信学会技術報告, センサネットワークとモバイルインテリジェンス研究会
01 Mar. 2024
01 Mar. 2024- 01 Mar. 2024 - A Method for Constructing Collision Avoidance Route for Multiple Unmanned Aerial Vehicles Using AODV-Based Link Hierarchization
Shuto Ohkawa; Kiyoshi ueda; Takumi Miyoshi; Taku Yamazaki; Ryo Yamamoto
Oral presentation, Japanese, 電子情報通信学会技術報告, ネットワークシステム研究会
01 Mar. 2024
29 Feb. 2024- 01 Mar. 2024 - Implementation of a cooperative streaming method between streaming server and P2P using WebRTC Encoded Transform
Ryunosuke Sato; Satoshi Ohzahata; Ryo Yamamoto
Japanese, 電子情報通信学会技術報告, 情報ネットワーク研究会
22 Dec. 2023
22 Dec. 2023- 22 Dec. 2023 - A No-Reference QoE Estimation method with WebRTC Statistics using Deep Learning
Keisuke Sakakibara; Satoshi Ohzahata; Ryo Yamamoto
Japanese, 電子情報通信学会技術報告, コミュニケーションクオリティ研究会
22 Nov. 2023
22 Nov. 2023- 22 Nov. 2023 - Federated Learningのための複数車載カメラによる物体追跡を用いたラベル付け
中濱雄喜; 大坐畠 智; 山本 嶺
Japanese, 電子情報通信学会技術報告, 情報ネットワーク研究会
19 Oct. 2023
19 Oct. 2023- 19 Oct. 2023 - LiDARを介した車載カメラ間の物体追跡によるラベル付け
中濱雄喜; 大坐畠智; 山本嶺
電子情報通信学会ソサイエティ大会
14 Sep. 2023
14 Sep. 2023- 14 Sep. 2023 - Load-Sensitive Balancing Strategy Switching with Spatial-Temporal Load Balancing Method for Wireless Sensor Networks
Tomoya Sato; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
17 Mar. 2023
17 Mar. 2023- 17 Mar. 2023 - Virtual Network Embedding Method for Improving Wireless Network Resource Utilization Efficiency
Raihaanjun Kushiyama; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE Technical Report, Technical Committee on Information and Communication Management
17 Mar. 2023
17 Mar. 2023- 17 Mar. 2023 - Autonomous Action Strategy Based on Assumed Risk Assessment for Multi-UAV Cooperated Unmanned Disaster Search and Rescue
Yukiya Kunugi; Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi; Kiyoshi Ueda; Satoshi Ohzahata
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
16 Mar. 2023
16 Mar. 2023- 16 Mar. 2023 - Centrality Evaluation Using Nearby Detour Routes for End-to-End Routes
Ken Sasaki; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE General Conference
08 Mar. 2023
08 Mar. 2023- 08 Mar. 2023 - Charging Route Selection with Predicted Energy Consumption for Wireless Rechargeable Sensor Networks
Shun Nakata; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE General Conference
08 Mar. 2023
08 Mar. 2023- 08 Mar. 2023 - Experimental Evaluation of the Impact of Access Point Layout on Wi-Fi RTT-based Indoor Positioning Accuracy
Hidekazu Fujimoto; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE General Conference
08 Mar. 2023
08 Mar. 2023- 08 Mar. 2023 - Optimizing the Placement of Highly Reliable Fog Node Using Tabu Search for Fog Computing
Takamichi Yamamoto; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE General Conference
08 Mar. 2023
08 Mar. 2023- 08 Mar. 2023 - Experimental Evaluation of Accommodated Traffic Maximization with Opportunistic Routing in Heterogeneous Networks
Tomoya Yasutake; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE General Conference
07 Mar. 2023
07 Mar. 2023- 07 Mar. 2023 - Relay Node Selection Method for UAV Routing in Wireless Multi-hop Network
Haruki Gunji; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
Japanese, IEICE Technical Report, Technical Committee on Network Systems
03 Mar. 2023
03 Mar. 2023- 03 Mar. 2023 - Evaluate Multiple Route Construction Methods for UAVs Travel Time and Safety using a Variety of Node Arrangements
Yuto Kokubun; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
Japanese, IEICE Technical Report, Technical Committee on Network Systems
03 Mar. 2023
03 Mar. 2023- 03 Mar. 2023 - Efficient execution of wireless multi-hop network simulation by User-PC computing system using Docker
Haruki Gunji; Kiyoshi Ueda; Hein Hte; Lynn Htet Aung; Takumi Miyoshi; Ryo Yamamoto; Taku Yamazaki
Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
03 Mar. 2023
02 Mar. 2023- 03 Mar. 2023 - Evaluation of OLSR-based Multiple UAVs Route Construction Method using Link Hierarchization
Haruki Gunji; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
Japanese, IEICE Technical Report, Technical Committee on Network Systems
25 Nov. 2022
25 Nov. 2022- 25 Nov. 2022 - AODV-based Multiple Route Construction Methods for UAVs Travel Time and Safety
Yuto Kokubun; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Kiyoshi Ueda
Japanese, IEICE Technical Report, Technical Committee on Network Systems
25 Nov. 2022
25 Nov. 2022- 25 Nov. 2022 - Detecting Object through Federated Learning with an autonomous driving simulator Generated Data
Atsushi Nakajima; Satoshi Ohzahata; Ryo Yamamoto
Japanese, RISING
31 Oct. 2022
31 Oct. 2022- 31 Oct. 2022 - Making a Pre-training Model of Deep Reinforcement Learning for TCP Congestion Control using Different Communication Environments
Takumi Odagawa; Satoshi Ohzahata; Ryo Yamamoto
Japanese, RISING
31 Oct. 2022
31 Oct. 2022- 31 Oct. 2022 - An Anomaly Detection System of IoT Traffic for Smart Home Environments
Naoto Watanabe; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto
Japanese, IEICE Technical Report, Technical Committee on Network Systems
05 Oct. 2022
05 Oct. 2022- 05 Oct. 2022 - Performance Analysis of UAV Distributed Management Method Based on Network Technologies
Takahiko Haraguchi; Hiroshi Katada; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Kiyoshi Ueda
Japanese, IEICE Technical Report, Technical Committee on Network Systems
02 Sep. 2022
02 Sep. 2022- 02 Sep. 2022 - An AODV-Based Routing Method for UAVs Travel Time and Safety
Yuto Kokubun; Kiyoshi Ueda; Takumi Miyoshi; Taku Yamazaki; Ryo Yamamoto
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
12 May 2022 - A Method for Constructing Collision Avoidance Route for Multiple Unmanned Aerial Vehicles Using OLSR-Based Link Hierarchization
Haruki Gunji; Kiyoshi Ueda; Takumi Miyoshi; Taku Yamazaki; Ryo YamamotoH
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
12 May 2022 - A Flooding Realization Method by Dynamic FIB Construction in CCN
Aoi Namai; Satoshi Ohzahata; Ryo Yamamoto
Japanese, IEICE Technical Report, Technical Committee on Information Network
11 Mar. 2022
11 Mar. 2022- 11 Mar. 2022 - ACO-inspired Load Balancing for Backoff-based Opportunistic Routing
Yudai Matsuo; Ryo Yamamoto; Satoshi Ohzahata; Taku Yamazaki; Takumi Miyoshi
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
10 Mar. 2022
10 Mar. 2022- 10 Mar. 2022 - Communication Resources Allocation in Multi-Channel In-Car Wireless Networks
Sorato Takaya; Ryo Yamamoto; Satoshi Ohzahata; Genki Hosokawa; Tadahide Kunitachi
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
09 Mar. 2022
09 Mar. 2022- 09 Mar. 2022 - Active intrusion detection method for IoT devices
Takahiro Ohtani; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
09 Mar. 2022
09 Mar. 2022- 09 Mar. 2022 - ハニーポットと機械学習を用いたIoTトラヒックの異常検知
Naoto Watanabe; Taku Yamazaki; Takumi Miyoshi; Thomas Silverston; Ryo Yamamoto
Japanese, IEICE General Conference
Mar. 2022
Mar. 2022 Mar. 2022 - 無線ジオフェンスによる飛行禁止領域回避のためのUAV軌道制御手法
Kazuya Momoe; Takumi Miyoshi; Taku Yamazaki; Thomas Silverston; Ryo Yamamoto; Kiyoshi Ueda
Japanese, IEICE General Conference
Mar. 2022
Mar. 2022 Mar. 2022 - 高密度UAV環境における地上ビーコンを用いた分散管理手法
Takahiko Haraguchi; Hiroshi Katada; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Thomas Silverston; Kiyoshi Ueda
Japanese, IEICE General Conference
Mar. 2022
Mar. 2022 Mar. 2022 - 災害時における事前取得位置情報に基づいたUAV移動基地局の経路決定法
Reiko Iwamoto; Takumi Miyoshi; Taku Yamazaki; Thomas Silverston; Ryo Yamamoto; Kiyoshi Ueda
Japanese, IEICE General Conference
Mar. 2022
Mar. 2022 Mar. 2022 - A Study on UAV Flight Management System Based on Network Technologies
Takahiko Haraguchi; Hiroshi Katada; Taku Yamazaki; Takumi Miyoshi; Kiyoshi Ueda; Ryo Yamamoto; Thomas Silverston
Japanese, IEICE Technical Report, Technical Committee on Network Systems
07 Oct. 2021
07 Oct. 2021- 07 Oct. 2021 - A Study on IoT Traffic Anomaly Detection in Smart Home Environments
Naoto Watanabe; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Thomas Silverston
Japanese, IEICE Technical Report, Technical Committee on Network Systems
06 Oct. 2021
06 Oct. 2021- 06 Oct. 2021 - Optimizing Medical and Laboratory Resources Simulation #28
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article153/, Domestic conference
21 Sep. 2021 - A Routing Method for CCN with Blockchain
Shuichi Tokunaga; Satoshi Ohzahata; Ryo Yamamoto
Japanese, IEICE Technical Report, Technical Committee on Information Network
09 Sep. 2021
09 Sep. 2021- 09 Sep. 2021 - SSDF Attack Detection Using Ridge Regression
Yamato Negishi; Satoshi Ohzahata; Ryo Yamamoto
Japanese, IEICE Society Conference
Sep. 2021
Sep. 2021 Sep. 2021 - Optimizing Medical and Laboratory Resources Simulation #27
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article123/, Domestic conference
31 Aug. 2021 - Optimizing Medical and Laboratory Resources Simulation #26
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article119/, Domestic conference
17 Aug. 2021 - Optimizing Medical and Laboratory Resources Simulation #23
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article089/, Domestic conference
28 Jun. 2021 - Optimizing Medical and Laboratory Resources Simulation #22
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article083/, Domestic conference
17 Jun. 2021 - Optimizing Medical and Laboratory Resources Simulation #16
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article013/, Domestic conference
15 Apr. 2021 - Simulation of Medical and Laboratory Resource Optimization Vaccination Effectiveness Study #3
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article015/, Domestic conference
30 Mar. 2021 - Simulation of Medical and Laboratory Resource Optimization Vaccination Effectiveness Study #4
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article014/, Domestic conference
23 Mar. 2021 - Optimizing Medical and Laboratory Resources Simulation #15
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article016/, Domestic conference
16 Mar. 2021 - [Invited Talk] Queueing Simulation for Predicting COVID-19 Pandemic and Required Medical Resources
Takumi Miyoshi; Taku Yamazaki; Ryo Yamamoto; Tomoyuki Yatabe
Japanese, IEICE Technical Report, Technical Committee on Information and Communication Management
11 Mar. 2021
11 Mar. 2021- 11 Mar. 2021 - Optimizing Medical and Laboratory Resources Simulation #14
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article017/, Domestic conference
11 Mar. 2021 - Simulation of Medical and Laboratory Resource Optimization Vaccination Effectiveness Study #2
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article018/, Domestic conference
11 Mar. 2021 - Optimizing Medical and Laboratory Resources Simulation #13
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article019/, Domestic conference
05 Mar. 2021 - Optimizing Medical and Laboratory Resources Simulation #12
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article021/, Domestic conference
25 Feb. 2021 - Simulation of Medical and Laboratory Resource Optimization Vaccination Effectiveness Study #1
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article020/, Domestic conference
25 Feb. 2021 - Optimizing Medical and Laboratory Resources Simulation #11
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article022/, Domestic conference
16 Feb. 2021 - Optimizing Medical and Laboratory Resources Simulation #10
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2021_rq3_countermeasures_simulation/articles/article023/, Domestic conference
07 Feb. 2021 - Optimizing Medical and Laboratory Resources Simulation #9
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2020_rq3_medical_system/articles/article026/, Domestic conference
31 Jan. 2021 - Optimizing Medical and Laboratory Resources Simulation #8
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2020_rq3_medical_system/articles/article027/, Domestic conference
25 Jan. 2021 - [Invited Lecture] Communication Technology and Its Application in Wireless Multi-hop Networks
Ryo Yamamoto
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
21 Jan. 2021
21 Jan. 2021- 21 Jan. 2021 - Optimizing Medical and Laboratory Resources Simulation #7
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2020_rq3_medical_system/articles/article028/, Domestic conference
18 Jan. 2021 - Optimizing Medical and Laboratory Resources Simulation #6
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2020_rq3_medical_system/articles/article030/, Domestic conference
06 Jan. 2021 - Optimizing Medical and Laboratory Resources Simulation #5
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2020_rq3_medical_system/articles/article031/, Domestic conference
04 Jan. 2021 - Optimizing Medical and Laboratory Resources Simulation #4
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2020_rq3_medical_system/articles/article032/, Domestic conference
28 Dec. 2020 - Optimizing Medical and Laboratory Resources Simulation #3
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2020_rq3_medical_system/articles/article033/, Domestic conference
22 Dec. 2020 - Optimizing Medical and Laboratory Resources Simulation #2
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2020_rq3_medical_system/articles/article034/, Domestic conference
17 Dec. 2020 - Improvement of MPTCP Throughput under Insufficient Send Socket Buffer
Toshihiko Kato; Adhikari Diwakar; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE Technical Report, Technical Committee on Information Network
07 Dec. 2020
07 Dec. 2020- 07 Dec. 2020 - Optimizing Medical and Laboratory Resources Simulation #1
MRI, Shibaura; Institute of Technology; Takumi Miyoshi; Taku Yamazaki; The University of Electro-Communications; Ryo Yamamoto
Media report, Japanese, Cabinet Secretariat Covid-19 AI & Simulation Project, https://www.covid19-ai.jp/ja-jp/presentation/2020_rq3_medical_system/articles/article036/, Domestic conference
18 Nov. 2020 - A dynamic cache server placement method for content distribution system over container infrastructure
Fumiya Suzuki; Satoshi Ohazahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, インターネットアーキテクチャ研究会
09 Oct. 2020
09 Oct. 2020- 09 Oct. 2020 - Opportunistic Routing for Heterogeneous IoT Network
Yasushi Okamura; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
06 Mar. 2020 - A Packet Forwarding Method Using Concurrent Transmission Flooding and Opportunistic Routing
Tomoyuki Yokoyama; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto
Japanese, IEICE General Conference
Mar. 2020
Mar. 2020 Mar. 2020 - A Routing Method Using Microwave and mmWave in Vehicle
Ohba Takato; Taku Yamazaki; Takumi Miyoshi; Ryo Yamamoto; Genki Hosokawa; Tadahide Kunitachi; Yoshiaki Tanaka
Japanese, IEICE General Conference
Mar. 2020
Mar. 2020 Mar. 2020 - Information Sharing System Based on Vehicle Location in Hierarchical VANET
Mitsuhiro Nakamura; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiai Tanaka
Japanese, IEICE General Conference
Mar. 2020
Mar. 2020 Mar. 2020 - A Study on Congestion Control Scheme for Multipath TCP Based on CUBIC TCP
Toshihiko Kato; Shiho Haruyama; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE Technical Report, Technical Committee on Information Network
19 Dec. 2019
19 Dec. 2019- 19 Dec. 2019 - An Experimental Study on Congestion Control for Multipath TCP and Conventional TCP
Shiho Haruyama; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
22 Nov. 2019
22 Nov. 2019- 22 Nov. 2019 - A study on bitrate control using feedback based on node cache information in adaptive streaming over ICN
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Network Systems
10 Oct. 2019
10 Oct. 2019- 10 Oct. 2019 - Performance Evaluation of Social-Aware Cooperative D2D Relay Selection in 2-dimension Environment
Yu Long; Ryo Yamamoto; Taku Yamazaki; Yoshiaki Tanaka
English, IEICE Society Conference
11 Sep. 2019
11 Sep. 2019- 11 Sep. 2019 - [Poster] Characterization of Hierarchical VANET Communication on Merging Traffic
中村 光宏; 山崎 託; 山本 嶺; 三好 匠; 田中 良明
Japanese, 第3回コミュニケーションクオリティ学生ワークショップ
05 Sep. 2019
05 Sep. 2019- 05 Sep. 2019 - [Invited Talk] Dynamic Routing Protocols for Wireless Multihop Networks
Ryo Yamamoto
Japanese, IEICE Technical Report, Invited, Technical Committee on Communication Quality
28 Aug. 2019
28 Aug. 2019- 28 Aug. 2019 - A study on stabilizing bit rate selection for adaptive streaming on ICN
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
18 Jul. 2019
18 Jul. 2019- 18 Jul. 2019 - Throughput Enhancement with Edge Overlay Using Commodity Devices in Data Center Networks
Hiroki Kawahara; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Network Systems
16 May 2019
16 May 2019- 16 May 2019 - A study on content registration with blockchain in CCN
Rei Nakagawa; Yuki Tajima; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Network Systems
19 Apr. 2019
19 Apr. 2019- 19 Apr. 2019 - Social-aware Cooperative Relay Selection in D2D Communication
Yu Long; Ryo Yamamoto; Taku Yamazaki; Yoshiaki Tanaka
English, IEICE General Conference
20 Mar. 2019
20 Mar. 2019- 20 Mar. 2019 - Transmission Control in Adaptive Anchor Zone Adjustment Based on Terminal Encounter Rate for Floating Contents
Atsufumi Kashima; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE General Conference, Domestic conference
20 Mar. 2019 - A Proposal of Cache-Aware Adaptive Video Streaming System According Edge-Router Control on ICN
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE General Conference
19 Mar. 2019
19 Mar. 2019- 19 Mar. 2019 - Redundant Route Reduction Method Based on Inter-Vehicle Distances in Hierarchical VANET
Mitsuhiro Nakamura; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiai Tanaka
Japanese, IEICE General Conference
19 Mar. 2019
19 Mar. 2019- 19 Mar. 2019 - Improving communication quality and cache efficiency with edge router controls for adaptive video streaming over ICN
Rei Nakagawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Network Systems
05 Mar. 2019
05 Mar. 2019- 05 Mar. 2019 - Estimation of TCP Congestion Control Algorithm by Use of Recurrent Neural Network
Naoki Ohzeki; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Network Systems
05 Mar. 2019
05 Mar. 2019- 05 Mar. 2019 - Opportunistic Routing for Heterogeneous IoT Network
Yasushi Okamura; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
05 Mar. 2019 - An off-chain implementation of smart contract for computation resource management on cloud-based network system
Takato Ohsawa; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Information Network
04 Mar. 2019
04 Mar. 2019- 04 Mar. 2019 - An Experimental Study on MultiPath TCP Congestion Control
Toshihiko Kato; Adhikari Diwakar; Ryo Yamamoto; Satoshi Ohzahata
Japanese, IEICE Technical Report, Technical Committee on Information Network
13 Dec. 2018
13 Dec. 2018- 13 Dec. 2018 - A Study on Throughput Degradation in TCP Reno Invoked by Access Point Scanning over Wireless LAN
Souta Tasaki; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
15 Nov. 2018
15 Nov. 2018- 15 Nov. 2018 - A proposal of fast contents delivery infrastructure using container technology
Kento Nakanishi; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Network Systems
18 Oct. 2018
18 Oct. 2018- 18 Oct. 2018 - フローティングコンテンツにおけるポアソン分布に基づくアンカーゾーン有効半径最適化
Atsufumi Kashima; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Japanese, IEICE Society Conference
13 Sep. 2018
13 Sep. 2018- 13 Sep. 2018 - Device to Device Peer Discovery Mechanism Based on Social Network Information
Yu Long; Ryo Yamamoto; Taku Yamazaki; Yoshiaki Tanaka
English, IEICE Society Conference
12 Sep. 2018
12 Sep. 2018- 12 Sep. 2018 - A cache assignment method with bandwidth reservation for CCN
Atsuko Yokotani; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Communication Systems
12 Jul. 2018
12 Jul. 2018- 12 Jul. 2018 - スマートコントラクトを用いた実際のやりとりを相互に確認する方式の検討
小堀 輝; 大坐畠 智; 山本 嶺; 加藤 聰彦
Japanese, IEICE General Conference
21 Mar. 2018
21 Mar. 2018- 21 Mar. 2018 - A Proposal on Collaborative Control of Bandwidth and Cache in CCN
Atsuko Yokotani; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE General Conference
21 Mar. 2018
21 Mar. 2018- 21 Mar. 2018 - Adaptive Parameter Control Based on Smoothed Random Value in Backoff-based Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Tadahide Kunitachi; Yoshiaki Tanaka
Japanese, IEICE General Conference
21 Mar. 2018
21 Mar. 2018- 21 Mar. 2018 - Advanced Bayesian Watchdog Mechanism Based on Bayesian Belief Network to Prevent Malicious Nodes in MANETs
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE General Conference
20 Mar. 2018
20 Mar. 2018- 20 Mar. 2018 - Lifetime Extension of Wireless Sensor Networks by Ant Colony Optimization Routing
Seira Nishibu; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
08 Mar. 2018
08 Mar. 2018- 08 Mar. 2018 - Experimental Verification of Packet Loss Classification Method using K-means Clustering in TCP Congestion Control for IEEE802.11 WLAN Link
Tomokazu Moriyama; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
08 Mar. 2018
08 Mar. 2018- 08 Mar. 2018 - Heterogeneous Opportunistic Routing Based on Route Reliability
Yasushi Okamura; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Communication Quality
08 Mar. 2018
08 Mar. 2018- 08 Mar. 2018 - Multiple Reference Terminal Placement for Hierarchical Opportunistic Routing Using Destination Terminal Area Estimation
Ryota Kameda; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Japanese, IEICE Technical Report, Technical Committee on Network Systems
02 Mar. 2018
02 Mar. 2018- 02 Mar. 2018 - Effective Anchor Zone Radius Optimization Based on the Number of Encountered Terminals for Floating Content
Atsufumi Kashima; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Japanese, IEICE Technical Report, Technical Committee on Network Systems
02 Mar. 2018
02 Mar. 2018- 02 Mar. 2018 - An Adaptive Bandwidth Reservation Method According to Content Request and Resource Utilization in Content Centric Network
Tomoharu Endo; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Information Network
23 Jan. 2018
23 Jan. 2018- 23 Jan. 2018 - A Piece and Destination Selection Method of Pseudo-Multicast Streaming Content Delivery with Network Coding
Kento Miyatani; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Japanese, IEICE Technical Report, Technical Committee on Information Network
23 Jan. 2018
23 Jan. 2018- 23 Jan. 2018 - Adaptive Parameter Control Based on Random Value Information in Backoff-based Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Tadahide Kunitachi; Yoshiaki Tanaka
Japanese, IEICE Technical Report, Technical Committee on Network Systems
18 Jan. 2018
18 Jan. 2018- 18 Jan. 2018 - Performance Degradation of Multipath TCP by Limited Send Socket Buffer over Subflows with Different Transmission Delay
Adhikari Diwakar; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
English, IEICE Technical Report, Technical Committee on Information Network
14 Dec. 2017
14 Dec. 2017- 14 Dec. 2017 - Invited Lecture : Opportunistic Routing by Narrowing Forwarding Areas in Ad Hoc Networks
山崎 託; 山本 嶺; 三好 匠; 朝香 卓也; 田中 良明
Japanese, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, http://id.ndl.go.jp/bib/028699383
16 Nov. 2017
16 Nov. 2017- 16 Nov. 2017 - Opportunistic Routing by Narrowing Forwarding Areas in Ad Hoc Networks
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
16 Nov. 2017 - Poster Presentation : A Bandwidth Reservation Method According to User Request in Content Centric Network
遠藤 朝陽; 大坐畠 智; 山本 嶺; 加藤 聰彦
Japanese, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, http://id.ndl.go.jp/bib/028639115
26 Oct. 2017
26 Oct. 2017- 26 Oct. 2017 - A Bandwidth Reservation Method According to User Request in Content Centric Network
Tomoharu Endo; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
26 Oct. 2017 - Adaptive Parameter Calculation Based on Cubic Function in Backoff-based Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Tadahide Kunitachi; Yoshiaki Tanaka
Japanese, IEICE Society Conference
13 Sep. 2017
13 Sep. 2017- 13 Sep. 2017 - Hierarchical Opportunistic Routing Using Broadcast Nature of Wireless Communications
Ryota Kameda; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Japanese, IEICE Society Conference
13 Sep. 2017
13 Sep. 2017- 13 Sep. 2017 - Secure Load Balanced Handover in LTE Self Organized Network
Nava Krishna Chaitanya Javvaji; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE Society Conference
12 Sep. 2017
12 Sep. 2017- 12 Sep. 2017 - A Hybrid Approach for Named Data Networking Based Ad Hoc Routing
Ngo Quang Minh; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Oral presentation, English, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
08 Sep. 2017 - A cache control method considering bandwidth reservation content in CCN
Li ZhiHui; Satoshi Ohzahata; Ryo Yamamoto; Toshihiko Kato
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
08 Sep. 2017 - A Hybrid Approach for Named Data Networking Based Ad Hoc Routing (ネットワークシステム)
Minh Ngo Quang; Yamamoto Ryo; Ohzahata Satoshi; Kato Toshihiko
English, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, http://id.ndl.go.jp/bib/028572064
07 Sep. 2017
07 Sep. 2017- 07 Sep. 2017 - A cache control method considering bandwidth reservation content in CCN
李 智輝; 大坐畠 智; 山本 嶺; 加藤 聰彦
Japanese, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, http://id.ndl.go.jp/bib/028572041
07 Sep. 2017
07 Sep. 2017- 07 Sep. 2017 - Frame Aggregation Size Selection for Improving IEEE 802.11ac MU-MIMO Downlink Throughput
Tomokazu Moriyama; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Communication Quality, Domestic conference
29 Aug. 2017 - Improvement of Confidentiality over Multipath TCP Using Data Scrambling and Path Dispersion
Shihan Chen; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato; Nobuo Suzuki
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Communication Quality, Domestic conference
29 Aug. 2017 - Frame Aggregation Size Selection for Improving IEEE 802.11ac MU-MIMO Downlink Throughput
森山 友和; 山本 嶺; 大坐畠 智; 加藤 聰彦
Japanese, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, http://id.ndl.go.jp/bib/028509405
28 Aug. 2017
28 Aug. 2017- 28 Aug. 2017 - Improvement of Confidentiality over Multipath TCP Using Data Scrambling and Path Dispersion
程 詩涵; 山本 嶺; 大坐畠 智; 加藤 聰彦; 鈴木 信雄
Japanese, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, http://id.ndl.go.jp/bib/028509483
28 Aug. 2017
28 Aug. 2017- 28 Aug. 2017 - Opportunistic Routing におけるネットワーク階層化
Ryota Kameda; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, Japanese, 電子情報通信学会NWS研究会, ネットワークソフトウェア研究会, Domestic conference
09 Jun. 2017 - Waiting Time Setting Based on Terminal Density for Opportunistic Routing
Atsufumi Kashima; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Communication Quality, Domestic conference
29 May 2017 - Adaptive Coefficient Control in Backoff-based Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Tadahide Kunitachi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
25 Mar. 2017 - Transfer Control Method Using Terminal Hierarchization in Opportunistic Routing
Ryota Kameda; Ryo Yamamoto; Yoshiaki Tanaka
Japanese, IEICE General Conference
24 Mar. 2017
24 Mar. 2017- 24 Mar. 2017 - Efficient Handover Scheme for LTE/LTE-A Network
Nava Krishna Chaitanya Javvaji; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE General Conference
24 Mar. 2017
24 Mar. 2017- 24 Mar. 2017 - Advanced D-S Evidence Theory based Trust Management against Malicious Nodes in MANETs
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE General Conference
24 Mar. 2017
24 Mar. 2017- 24 Mar. 2017 - Evaluation of Delay Time in Adaptive Reliability Control for Ad Hoc Networks
Tomoaki Sakaguchi; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Japanese, IEICE General Conference
22 Mar. 2017
22 Mar. 2017- 22 Mar. 2017 - Improving Confidentiality in MPTCP by Data Scrambling and Multipath Transfer
Toshihiko Kato; Shihan Chen; Ryo Yamamoto; Satoshi Ohzahata; Nobuo Suzuki
Japanese, IEICE General Conference
22 Mar. 2017
22 Mar. 2017- 22 Mar. 2017 - Frame Aggregation Size Selection for MU-MIMO Downlink Transmission Considering Delay and Channel Utilization
Tomokazu Moriyama; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Japanese, IEICE General Conference
22 Mar. 2017
22 Mar. 2017- 22 Mar. 2017 - Experiment of Reliability Control for Ad Hoc Networks Using Bluetooth Low Energy
Tomoaki Sakaguchi; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Communication Quality, Domestic conference
06 Mar. 2017 - Performance Evaluation of MPTCP under Different Transmission Delay and Insufficient Send/Receive Socket Buffer
Masaaki Tenjin; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato; Nobuo Suzuki
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Communication Quality, Domestic conference
06 Mar. 2017 - Performance Analysis of Adaptive Coefficient Control in Backoff-based Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Tadahide Kunitachi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
03 Mar. 2017 - Performance Analysis of Adaptive Coefficient Control in Backoff-based Opportunistic Routing
山崎 託; 山本 嶺; 國立 忠秀; 田中 良明
Japanese, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, http://id.ndl.go.jp/bib/028102052
02 Mar. 2017
02 Mar. 2017- 02 Mar. 2017 - Self-Organized Neighbour Cell List in LTE Networks
Nava Krishna Chaitanya Javvaji; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE Society Conference
23 Sep. 2016
23 Sep. 2016- 23 Sep. 2016 - Computation Offloading Framework for Mobile Cloud Computing
Bing Yu; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE Society Conference
22 Sep. 2016
22 Sep. 2016- 22 Sep. 2016 - Weighted TDMA Based on Multiple Terminals’ Traffic Load for Wireless Sensor Networks
Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Japanese, IEICE Society Conference
22 Sep. 2016
22 Sep. 2016- 22 Sep. 2016 - Evaluation of Retransmission Count in Adaptive Reliability Control for Ad Hoc Networks
Tomoaki Sakaguchi; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Japanese, IEICE Society Conference
22 Sep. 2016
22 Sep. 2016- 22 Sep. 2016 - Experimental analysis on impacts to TCP throughput of power save mode in IEEE 802.11n wireless LAN
Kento Kobayashi; Yoshiki Hashimoto; Masataka Nomoto; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Communication Quality, Domestic conference
24 May 2016 - A Stable Clustered Technique in Mobile Ad Hoc Networks Using Link Expiration Time
Shrestha Pratikshya; Ryo Yamamoto; Yoshiki. Tanaka
Oral presentation, English, IEICE General Conference, Domestic conference
18 Mar. 2016 - Load Reduction Method Based on Hop Count and Neighbour Relation in Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
17 Mar. 2016 - Block-based Transmission with Adaptive Reliability Control for Ad Hoc Networks
Tomoaki Sakaguchi; Taku Yamazaki; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
16 Mar. 2016 - Area-Restricted Opportunistic Routing for Ad Hoc Networks
Ryotaro Araki; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE General Conference, Domestic conference
16 Mar. 2016 - Inferring TCP Congestion Control Algorithm Using One Way Packet Logs
Leelianou Yongxialee; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Oral presentation, Japanese, IEICE General Conference, Domestic conference
15 Mar. 2016 - Impacts of power saving mode of 802.11n WLAN to TCP small queues
Kento Kobayashi; Yoshiki Hashimoto; Masataka Nomoto; Ryo Yamamoto; Satoshi Ohzahata; Toshihiko Kato
Oral presentation, Japanese, IEICE General Conference, Domestic conference
15 Mar. 2016 - Transmission Area Restricted Opportunistic Routing for Ad Hoc Networks
Ryotaro Araki; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
04 Mar. 2016 - Transmission Area Restricted Opportunistic Routing for Ad Hoc Networks
荒木 涼太郎; 山崎 託; 山本 嶺; 三好 匠
Japanese, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, http://id.ndl.go.jp/bib/027250845
03 Mar. 2016
03 Mar. 2016- 03 Mar. 2016 - B-11-15 Inferring TCP Congestion Control Algorithm Using One Way Packet Logs
Yongxialee Leelianou; Yamamoto Ryo; Ohzahata Satoshi; Kato Toshihiko
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
01 Mar. 2016
01 Mar. 2016- 01 Mar. 2016 - B-11-18 Impacts of power saving mode of 802.11n WLAN to TCP small queues
Kobayashi Kento; Hashimoto Yoshiki; Nomoto Masataka; Yamamoto Ryo; Ohzahata Satoshi; Kato Toshihiko
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
01 Mar. 2016
01 Mar. 2016- 01 Mar. 2016 - B-6-115 Area-Restricted Opportunistic Routing for Ad Hoc Networks
ARAKI Ryotaro; YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
01 Mar. 2016
01 Mar. 2016- 01 Mar. 2016 - B-6-111 Block-based Transmission with Adaptive Reliability Control for Ad Hoc Networks
Sakaguchi Tomoaki; Yamazaki Taku; Yamamoto Ryo; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
01 Mar. 2016
01 Mar. 2016- 01 Mar. 2016 - BS-3-37 A Stable Clustered Technique in Mobile Ad Hoc Networks Using Link Expiration Time(BS-3. Advanced Networking Technologies for Innovative Information Networks)
Shrestha Pratikshya; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
01 Mar. 2016
01 Mar. 2016- 01 Mar. 2016 - BS-2-5 Load Reduction Method Based on Hop Count and Neighbour Relation in Opportunistic Routing
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, http://ci.nii.ac.jp/naid/110010038463
01 Mar. 2016
01 Mar. 2016- 01 Mar. 2016 - A Cooperative Multicast Method Using Neighbour Nodes for Ad Hoc Networks
Ryotaro Araki; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
15 Oct. 2015 - Retransmission Control Method Based on Forwarding Eligibility for Opportunistic Routing
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
11 Sep. 2015 - A End-to-End Reliability Enhancement Scheme for DTN
Saw David San; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE Society Conference
09 Sep. 2015
09 Sep. 2015- 09 Sep. 2015 - Automatic Web Application Test Case Generation Through Page Object
Bing Yu; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE Society Conference
08 Sep. 2015
08 Sep. 2015- 08 Sep. 2015 - Advanced Principal-Agent Theory Based Packet Forwarding Incentive Strategy with Reinforcement Learning in Ad Hoc Networks
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE Society Conference, Domestic conference
08 Sep. 2015 - Opportunistic Routing Based on Terminal Density and Terminal Distance
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Communication Quality, Domestic conference
02 Sep. 2015 - Opportunistic Routing : Based on Terminal Density and Terminal Distance
山崎 託; 山本 嶺; 三好 匠
Japanese, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, http://id.ndl.go.jp/bib/026801787
01 Sep. 2015
01 Sep. 2015- 01 Sep. 2015 - B-6-69 Retransmission Control Method Based on Forwarding Eligibility for Opportunistic Routing
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya; Tanaka Yoshiaki
Japanese, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
25 Aug. 2015
25 Aug. 2015- 25 Aug. 2015 - BS-6-12 An End-to-End Reliability Enhancement Scheme for DTN(BS-6.Network and service Design, Control and Management)
San Saw David; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
25 Aug. 2015
25 Aug. 2015- 25 Aug. 2015 - BS-6-7 Advanced Principal-Agent Theory Based Packet Forwarding Incentive Strategy with Reinforcement Learning in Ad Hoc Networks(BS-6.Network and service Design, Control and Management)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
25 Aug. 2015
25 Aug. 2015- 25 Aug. 2015 - BS-6-3 Automatic Test Case Generation for Web Applications through Page Object(BS-6.Network and service Design, Control and Management)
Yu Bing; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
25 Aug. 2015
25 Aug. 2015- 25 Aug. 2015 - Introduction and Simulation Analysis of a Novel LDoS Attack in Mobile Ad Hoc Networks
Bo Yang; Bing Yu; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE General Conference
13 Mar. 2015
13 Mar. 2015- 13 Mar. 2015 - Load Balancing Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks
Tatsuya Shirai; Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi; Yoshiaki Tanaka
English, IEICE General Conference
12 Mar. 2015
12 Mar. 2015- 12 Mar. 2015 - Opportunistic Routing Using Prioritized Forwarder and Hop-by-Hop Retransmission Control
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
12 Mar. 2015 - DTN Reliability Enhancement with Custody Transfer Retransmission
Saw David San; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE General Conference
10 Mar. 2015
10 Mar. 2015- 10 Mar. 2015 - Opportunistic Routing Using Fixed Nodes for Load Balancing in Ad Hoc Networks
SHIRAI Tatsuya; YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/026321351, Ad hoc network is regarded as an optimal solution to establish network on poor quality environments such as stricken areas due to its simple and low cost operation. However, conventional routing methods cause centralization of packet transmission load except for the occurrence of dynamic network topology changes. In this paper, we propose a novel location-based load balancing method that can decentralize packet transmission load of each node in the whole networks. The proposed method opportunistically selects a route for data transmission from several route candidates prepared for load balancing. The performance and the efficiency of the proposed method are also clarified by computer simulation.
02 Mar. 2015
02 Mar. 2015- 02 Mar. 2015 - Analysis of Opportunistic Routing Using Prioritized Forwarders and Hop-by-Hop Retransmission Control
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
02 Mar. 2015 - Routing Opportunistic Routing Using Fixed Nodes for Load Balancing in Ad Hoc Networks
Tatsuya Shirai; Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
02 Mar. 2015 - BS-3-47 Introduction and Simulation Analysis of a Novel LDoS Attack in Mobile Ad Hoc Networks(BS-3. Advanced Technologies in the Design, Management and Control for Future Innovative Communication Network)
Yang Bo; Yu Bing; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
24 Feb. 2015
24 Feb. 2015- 24 Feb. 2015 - BS-3-17 Load Balancing Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks(BS-3. Advanced Technologies in the Design, Management and Control for Future Innovative Communication Network)
Shirai Tatsuya; Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
24 Feb. 2015
24 Feb. 2015- 24 Feb. 2015 - BS-3-5 DTN Reliability Enhancement with Custody Transfer Retransmission(BS-3. Advanced Technologies in the Design, Management and Control for Future Innovative Communication Network)
San Saw David; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
24 Feb. 2015
24 Feb. 2015- 24 Feb. 2015 - BS-4-10 Opportunistic Routing Using Prioritized Forwarder and Hop-by-Hop Retransmission Control
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, http://ci.nii.ac.jp/naid/110009928738
24 Feb. 2015
24 Feb. 2015- 24 Feb. 2015 - Performance Analysis of Opportunistic Routing Using Prioritized Forwarders and Hop-by-Hop Retransmission Control
YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi; ASAKA Takuya; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://ci.nii.ac.jp/naid/110010018632, In ad hoc networks, frequent packet losses and topological changes cause unstable communications. To solve this problem, OR (opportunistic routing) has been proposed. In OR, each terminal decides whether to forward a received packet based on a random backoff time. However, forwarder terminals must wait for the expiration of the random backoff timer before forwarding the packet. Moreover, it is difficult to obtain a transmission path diversity under a sparse environment. This paper proposes a forwarder selection method that uses the prioritized forwarders to reduce the backoff time. In addition, the proposed method also performs a retransmission control which is fit for the sparse environment. The performance and the effectiveness of the proposed method are clarified by computer simulation.
23 Feb. 2015
23 Feb. 2015- 23 Feb. 2015 - Reliable Message Transfer with Custodians in Delay Tolerant Networks
Saw David San; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE Society Conference, Domestic conference
25 Sep. 2014 - Opportunistic Routing Using Prioritized Forwarder in Ad Hoc Networks
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
25 Sep. 2014 - Incentive-Punishment Combined Bilateral Currency Framework against Dropping Packet Problem in Ad Hoc Networks
Bo Yang; Zhimu Huang; Xing Fan; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE Society Conference
24 Sep. 2014
24 Sep. 2014- 24 Sep. 2014 - Passive Relay Suppression in Stochastic Broadcast for VANET
Xing Fan; Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE Society Conference
24 Sep. 2014
24 Sep. 2014- 24 Sep. 2014 - A Novel Battery-Aware Probabilistic Routing Protocol in Ad Hoc Networks
Zhimu Huang; Bo Yang; Ryo Yamamoto; Yoshiaki tanaka
Oral presentation, English, IEICE Society Conference, Domestic conference
24 Sep. 2014 - Location-based Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks
Tatsuya Shirai; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, English, IEICE Society Conference, Domestic conference
24 Sep. 2014 - Efficient Association Control Algorithm for Wireless LANs Using Simulated Annealing
Bing Yu; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE Society Conference, Domestic conference
23 Sep. 2014 - Location-based Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks
SHIRAI Tatsuya; YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, Technical report of IEICE. CQ, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/025839407, To increase the availability of networks, there are a number of studies focusing on ensuring stable network environments on the unexpected occurrence of huge disaster. Above all, ad hoc networks are well suited for these situations due to its simple and rapid deployment of wireless networks at low costs. Several location-based routing protocols are proposed to enhance the performance by establishing stable transmission route. Scalability, however, are not taken into consideration due to the limitation of node mobility management on most location-based studies. In this paper, we propose a novel location-based routing method can improve communication efficiency by performing opportunistic link selections. Performance of the proposed method is verified by computer simulation.
11 Sep. 2014
11 Sep. 2014- 11 Sep. 2014 - Location-Based Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks
Tatsuya Shirai; Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Communication Quality, Domestic conference
11 Sep. 2014 - BS-6-3 Efficient Association Control Algorithm for Wireless LANs Using Simulated Annealing(BS-6.Network and service Design, Control and Management)
Yu Bing; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
09 Sep. 2014
09 Sep. 2014- 09 Sep. 2014 - BS-6-18 Location-based Opportunistic Routing Using Fixed Nodes for Ad Hoc Networks(BS-6.Network and service Design, Control and Management)
Shirai Tatsuya; Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
09 Sep. 2014
09 Sep. 2014- 09 Sep. 2014 - BS-6-14 Passive Relay Suppression in Stochastic Broadcast for VANET(BS-6.Network and service Design, Control and Management)
Fan Xing; Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
09 Sep. 2014
09 Sep. 2014- 09 Sep. 2014 - BS-6-15 A Novel Battery-Aware Probabilistic Routing Protocol in Ad Hoc Networks(BS-6.Network and service Design, Control and Management)
Huang Zhimu; Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
09 Sep. 2014
09 Sep. 2014- 09 Sep. 2014 - BS-6-30 Reliable Message Transfer with Custodians in Delay Tolerant Networks(BS-6.Network and service Design, Control and Management)
San Saw David; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
09 Sep. 2014
09 Sep. 2014- 09 Sep. 2014 - BS-3-4 Opportunistic Routing Using Prioritized Forwarder in Ad Hoc Networks
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya; Tanaka Yoshiaki
Japanese, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, http://ci.nii.ac.jp/naid/110009883755
09 Sep. 2014
09 Sep. 2014- 09 Sep. 2014 - A Novel Enhanced Max-Min Residual Battery-Aware Routing Protocol in Ad Hoc Networks
Zhimu Huang; Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
01 Aug. 2014 - A Novel Enhanced Max-Min Residual Battery-Aware Routing Protocol in Ad Hoc Networks
HUANG Zhimu; YANG Bo; YAMAMOTO Ryo; TANAKA Yoshiaki
English, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/025635578, An ad hoc network is characterized as a self-organized multi-hop wireless network. It does not rely on any pre-existing network infrastructures. Instead of this, each node can participate in the routing of packets to other nodes. However, each node in ad hoc networks is typically powered by batteries with a limited energy supply, and it is difficult to replace or to recharge them. Thus, it is crucial to consider how to conserve energy to maximize the network lifetime as an issue in the design of routing protocols. In conventional routing protocols, however, shortest-route algorithms are commonly used. Without considering energy consumption, nodes that are overused would drain their energy and the whole network would become partitioned. As concerns this problem, many battery-aware routing protocols have been proposed from a variety of perspectives. In this paper, we propose a novel enhanced max-min residual battery-aware routing protocol called EMAODV. It is expected to prolong the network lifetime by selecting an optimal route based on the battery conditions of the whole network. By EMAODV, the routes with insufficient battery energy are always avoided. If all the nodes in ad hoc networks have sufficient battery energy, a shortest route is selected. From the results of the performance evaluation, EMAODV shows a better performance in terms of prolonging the network lifetime.
31 Jul. 2014
31 Jul. 2014- 31 Jul. 2014 - A Cooperative Packet Forwarding Method Using Neighbour Nodes for Ad Hoc Networks
Ryotaro Araki; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
17 Apr. 2014 - Reliability Enhancement for Stochastic Broadcast in VANET
Xing Fan; Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE General Conference
21 Mar. 2014
21 Mar. 2014- 21 Mar. 2014 - Opportunistic Routing Based on Forwarding History in Ad Hoc Networks
Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
20 Mar. 2014 - A Packet Forwarding Method Using Route Neighbour Nodes for Ad Hoc Networks
Ryotaro Araki; Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE General Conference, Domestic conference
20 Mar. 2014 - A Novel Min-Max Residual Battery-Aware Routing Protocol for Ad Hoc Networks
Zhimu Huang; Ryo Yamamoto; Yoshiaki tanaka
English, IEICE General Conference
19 Mar. 2014
19 Mar. 2014- 19 Mar. 2014 - A Reliable Routing Method Using Local Repair for Ad Hoc Multicasting
Tatsuya Shirai; Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
English, IEICE General Conference
19 Mar. 2014
19 Mar. 2014- 19 Mar. 2014 - A Novel Packet Forwarding Incentive Strategy based on Principal-Agent Theory in Ad Hoc Networks
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE General Conference, Domestic conference
19 Mar. 2014 - Parameter Selection Method for Accurate Available Bandwidth Estimation by pathChirp
Dai Tianao; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE General Conference, Domestic conference
19 Mar. 2014 - BS-1-13 Parameter Selection Method for Accurate Available Bandwidth Estimation by pathChirp(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Dai Tianao; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
04 Mar. 2014
04 Mar. 2014- 04 Mar. 2014 - BS-1-74 Reliability Enhancement for Stochastic Broadcast in VANET(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Fan Xing; Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
04 Mar. 2014
04 Mar. 2014- 04 Mar. 2014 - BS-1-23 A Novel Min-Max Residual Battery-Aware Routing Protocol for Ad Hoc Networks(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Huang Zhimu; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
04 Mar. 2014
04 Mar. 2014- 04 Mar. 2014 - BS-1-22 A Reliable Routing Method Using Local Repair for Ad Hoc Multicasting(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Shirai Tatsuya; Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
04 Mar. 2014
04 Mar. 2014- 04 Mar. 2014 - BS-1-24 A Novel Packet Forwarding Incentive Strategy based on Principal-Agent Theory in Ad Hoc Networks(BS-1. Future Network Technologies for Advanced Information and Communications Society)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
04 Mar. 2014
04 Mar. 2014- 04 Mar. 2014 - B-6-157 A Packet Forwarding Method Using Route Neighbour Nodes for Ad Hoc Networks
ARAKI Ryotaro; YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
04 Mar. 2014
04 Mar. 2014- 04 Mar. 2014 - B-6-159 Opportunistic Routing Based on Forwarding History in Ad Hoc Networks
Yamamoto Ryo; Yamazaki Taku; Miyoshi Takumi; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
04 Mar. 2014
04 Mar. 2014- 04 Mar. 2014 - A Principal-Agent Theory based Game Theoretic Incentive Method for Packet Forwarding in Ad Hoc Networks
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE Technical Report, Technical Committee on Communication Quality, Domestic conference
24 Jan. 2014 - A Routing Method with Local Repair for Ad Hoc Multicasting
Tatsuya Shirai; Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
20 Dec. 2013 - A Block-based Transmission with Two-hop Reliability Control for Ad Hoc Networks
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Takuya Asaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
20 Dec. 2013 - Encouragement Talk : Routing Method with Local Repair for Ad Hoc Multicasting
SHIRAI Tatsuya; YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/025143962, Due to the inherent broadcast nature of wireless communication, ad hoc networks are well suited for multicast that can more efficiently deliver information from source nodes to many client nodes simultaneously. In ad hoc networks, however, links are established and disconnected dynamically due to the transmission interference and node movement. In conventional multicast routing protocols, the topology dynamics cause route reconstruction, and it may lead delay increase and delivery ratio degradation. In this paper, a novel multicast routing protocol is proposed. This protocol can improve packet delivery rate of ODMRP(On-demand multicast routing protocol) by making use of link failure detection mechanism as well as nodes' mobility prediction based local repair mechanism. The performance and the efficiency of the proposed method are also clarified by computer simulation.
19 Dec. 2013
19 Dec. 2013- 19 Dec. 2013 - A Block-based Transmission with Two-hop Reliability Control for Ad Hoc Networks
YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi; ASAKA Takuya
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://ci.nii.ac.jp/naid/110009901860, In ad hoc networks, frequent topological change, delay variation, and high packet loss rate are encountered as the result of unstable wireless communication. TCP/IP, due to its end-to-end control, cannot adapt to such a unstable network environment. As concerns this problem, A block transmission method, that uses hop-by-hop reliability control and burst transmission, has been proposed. Due to the block-by-block reliability control, however, this method cannot realize packet-by-packet route diversity. This paper proposes an efficient block transmission method with 2-hop reliability control. The performance and the effectiveness of the proposed method is clarified by computer simulation.
12 Dec. 2013
12 Dec. 2013- 12 Dec. 2013 - A Block Transmission Method Using Broadcast for Ad Hoc Networks
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
19 Sep. 2013 - Mobility-Based Opportunistic Routing for Ad Hoc Networks
Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
19 Sep. 2013 - Simulation Analysis of Flooding-Based DDoS Attack in Ad Hoc Networks
Bo Yang; Xing Fan; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE Society Conference
17 Sep. 2013
17 Sep. 2013- 17 Sep. 2013 - A Power-Aware Routing Protocol in Ad Hoc Networks
Zhimu Huang; Ryo Yamamoto; Yoshiaki tanaka
Oral presentation, English, IEICE Society Conference, Domestic conference
17 Sep. 2013 - Direction-Based Relay Selection Scheme for Alert Message Broadcast in VANET
Xing Fang; Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE Society Conference, Domestic conference
17 Sep. 2013 - Mobility-Based Opportunistic Routing for Ad Hoc Networks
Yamamoto Ryo; Yamazaki Taku; Miyoshi Takumi; Tanaka Yoshiaki
Japanese, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
03 Sep. 2013
03 Sep. 2013- 03 Sep. 2013 - BS-7-12 A Power-Aware Routing Protocol in Ad Hoc Networks
Huang Zhimu; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
03 Sep. 2013
03 Sep. 2013- 03 Sep. 2013 - BS-7-9 Direction-Based Relay Selection Scheme for Alert Message Broadcast in VANET
Fan Xing; Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
03 Sep. 2013
03 Sep. 2013- 03 Sep. 2013 - A BIock Transmission Method Using Broadacast for Ad Hoc Networks
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi; Asaka Takuya
Japanese, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, http://ci.nii.ac.jp/naid/110009729793
03 Sep. 2013
03 Sep. 2013- 03 Sep. 2013 - Game Theoretic Analysis of Reputation based IDS for Preventing Black Hole Attack in MANETs
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE General Conference, Domestic conference
22 Mar. 2013 - Delay-Based Opportunistic Routing for Ad Hoc Networks
Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
22 Mar. 2013 - Alternate Route Construction Method Using Node Mobility Prediction for Ad Hoc Multicasting
Tatsuya Shirai; Ryo Yamamoto; Taku Yamazaki; Takumi Miyoshi
Oral presentation, English, IEICE General Conference, Domestic conference
22 Mar. 2013 - Energy Saving Strategy Based on SPIN Routing Protocol in Wireless Sensor Network
Oluwatuyi Rufus Abidakun; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE General Conference, Domestic conference
19 Mar. 2013 - Opportunistic Routing Based on End-to-End Delay Estimation for MANET
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
08 Mar. 2013 - Opportunistic Routing Based on End-to-End Delay Estimation for MANET
YAMAMOTO Ryo; YAMAZAKI Taku; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/024417987, In ad hoc networkserminals' mobility may cause dynamic change of network topology, which makes it difficult to establish stable transmission routes. As concerns this problem, opportunistic routing (OR), which does not rely on any specific route and forwards packets opportunistically using stable links, has been proposed. In order to achieve efficient packet forwarding in ad hoc networks, this paper proposes a new OR protocol based on the estimated end-to-end delay that is calculated from terminals' queue lengths and links' transmission success rates. The proposed method tries to use the terminals that have the shorter delay to the destination terminal as forwarders for realizing shorter end-to-end delay and higher throughput. The performance and the efficiency of the proposed method are also clarified by computer simulation.
07 Mar. 2013
07 Mar. 2013- 07 Mar. 2013 - BS-1-44 Alternate Route Construction Method Using Node Mobility Prediction for Ad Hoc Multicasting
Shirai Tatsuya; Yamamoto Ryo; Yamazaki Taku; Miyoshi Takumi
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
05 Mar. 2013
05 Mar. 2013- 05 Mar. 2013 - BS-1-45 Game Theoretic Analysis of Reputation based IDS for Preventing Black Hole Attack in MANETs
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
05 Mar. 2013
05 Mar. 2013- 05 Mar. 2013 - BS-1-6 Energy Saving Strategy Based on SPIN Routing Protocol in Wireless Sensor Network
Abidakun Oluwatuyi Rufus; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
05 Mar. 2013
05 Mar. 2013- 05 Mar. 2013 - B-6-139 Delay-Based Opportunistic Routing f<)r Ad Hoc Networks
Yamamoto Ryo; Yamazaki Taku; Miyoshi Takumi; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
05 Mar. 2013
05 Mar. 2013- 05 Mar. 2013 - Cooperative Retransmission Method Using Neighbour Nodes for Ad Hoc Networks
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
13 Dec. 2012 - A Novel Mitigation Strategy against Malicious Actions based on Risk Evaluation Aware Trust Management in MANETs
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE Society Conference, Domestic conference
14 Sep. 2012 - Continuous Retransmission Method Using Neighbour Nodes for Ad Hoc Networks
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
13 Sep. 2012 - On Why Distributed Monitoring Needs Distributed PASTA
Marat Zhanikeev; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE Society Conference
12 Sep. 2012
12 Sep. 2012- 12 Sep. 2012 - Neighbour Traffic Based Routing Mechanism for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
11 Sep. 2012 - B-6-16 Neighbour Traffic Based Routing Mechanism for Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
Japanese, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
28 Aug. 2012
28 Aug. 2012- 28 Aug. 2012 - BS-2-3 Continuous Retransmission Method Using Neighbour Nodes for Ad Hoc Networks
Yamazaki Taku; Yamamoto Ryo; Miyoshi Takumi
Japanese, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
28 Aug. 2012
28 Aug. 2012- 28 Aug. 2012 - BS-5-37 A Novel Mitigation Strategy against Malicious Actions based on Risk Evaluation Aware Trust Management in MANETs(BS-5. Network and Service Design, Control and Management)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
28 Aug. 2012
28 Aug. 2012- 28 Aug. 2012 - Capturing QoS Context by Alternative Flow Monitoring in Clouds
Marat Zhanikeev; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE General Conference
22 Mar. 2012
22 Mar. 2012- 22 Mar. 2012 - Mobile Agent Based Wormhole Attack Detection in MANET
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE General Conference
20 Mar. 2012
20 Mar. 2012- 20 Mar. 2012 - Alternative Packet Sampling for Improved Fairness and Function
Marat Zhanikeev; Ryo Yamamoto; Yoshiaki Tanaka
English, IEICE General Conference
20 Mar. 2012
20 Mar. 2012- 20 Mar. 2012 - A Rerouting Method with Neighbour Cooperation for Ad Hoc Networks
Taku Yamazaki; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE General Conference, Domestic conference
20 Mar. 2012 - Autonomous Load Evaluation Method for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
20 Mar. 2012 - DDoS Attack Detection and Avoidance Method Based on Relay Priority for Ad Hoc Networks
Qi Wang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
20 Mar. 2012 - A Wormhole Attack Mitigation Strategy Based on Mobile Agent
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
08 Mar. 2012 - BS-3-4 Alternative Packet Sampling for Improved Fairness and Function(BS-3. Management and Control Technologies for Innovative Networks)
Zhanikeev Marat; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
06 Mar. 2012
06 Mar. 2012- 06 Mar. 2012 - BS-3-12 Mobile Agent Based Wormhole Attack Detection in MANET(BS-3. Management and Control Technologies for Innovative Networks)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
06 Mar. 2012
06 Mar. 2012- 06 Mar. 2012 - B-6-12 Autonomous Load Evaluation Method for Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
06 Mar. 2012
06 Mar. 2012- 06 Mar. 2012 - B-6-10 A Rerouting Method with Neighbour Cooperation for Ad Hoc Networks
YAMAZAKI Taku; YAMAMOTO Ryo; MIYOSHI Takumi
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
06 Mar. 2012
06 Mar. 2012- 06 Mar. 2012 - B-6-13 DDoS Attack Detection and Avoidance Method Based on Relay Priority for Ad Hoc Networks
Wang Qi; Yamamoto Ryo; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
06 Mar. 2012
06 Mar. 2012- 06 Mar. 2012 - A Wormhole Attack Mitigation Strategy Based on Mobile Agent
YANG Bo; YAMAMOTO Ryo; TANAKA Yoshiaki
English, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/023572535, Mobile ad hoc network (MANET) is a self-organized, infrastructure less, multi-hop network, which is highly vulnerable to various attacks. Among various attacks, DoS (Denial of Service) attack that may lead to the collapse of the network performs as a disaster in the network. Wormhole attack, a particularly devastating DoS attack, is taken by two or more colluding nodes that create a virtual tunnel to do further malicious actions. The tunnel emulates shorter links in the network and can be employed to transport packets between end points of the tunnel. By using wormhole attack, malicious nodes can not only eavesdrop packet contents but also modify or drop legitimate packets. Wormhole attack is even more harmful than other kinds of DoS attacks for it can be launched even without getting any cryptographic keys or compromising the existing nodes. This paper proposes a mobile agent based strategy to overcome not only the closed wormhole attack but also the half open and open wormhole attack. Both wormhole using encapsulation and wormhole using out-of-band channel are taken into consideration and the proposed method shows a good performance in detecting the malicious nodes.
01 Mar. 2012
01 Mar. 2012- 01 Mar. 2012 - Neighbour traffic-aware load balancing method in ad hoc networks
Fourth International Conference on Intelligent Network and Collaborative System
2012 - DDoS Attack Detection and Avoidance Mechanism Using Relay Priority for MANET
Qi Wang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
16 Dec. 2011 - DDoS Attack Detection and Avoidance Mechanism Using Relay Priority for MANET
WANG Qi; YAMAMOTO Ryo; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/023371538, DDoS attack is becoming a serious problem in mobile ad hoc networks. In the attack, widely distributed malicious nodes flood packets into the network, and exhaust resources of the network such as bandwidth, computing power, etc. As concerns this, some defence methods such as confirmation-based, traffic analysis-based methods are proposed to detect the malicious nodes. However, the conventional defence methods may cause delay increase and nodes' load increase. In order to solve these problems, this paper proposes a novel defence method against the DDoS attack which detects malicious nodes using relay priority based on time interval of route requests. The performance and the effectiveness of the proposed method are shown by computer simulation.
15 Dec. 2011
15 Dec. 2011- 15 Dec. 2011 - A Trust-aware Management Strategy Against Black Hole Attacks in MANET
Bo Yang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, English, IEICE Society Conference, Domestic conference
16 Sep. 2011 - A Target Tracking Algorithm Considering Energy Balance in WSNs
Vinh Tran-Quang; Nguyen Huu Phat; Ryo Yamamoto; Takumi Miyoshi
English, IEICE Society Conference
15 Sep. 2011
15 Sep. 2011- 15 Sep. 2011 - Load Balancing Method by Estimating Traffic Load in Ad Hoc
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
15 Sep. 2011 - DDoS Attack Detection and Avoidance in MANET Based on Relay Nodes’ Inference
Qi Wang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
15 Sep. 2011 - B-6-69 DDoS Attack Detection and Avoidance in MANET Based on Relay Nodes' Inference
Wang Qi; Yamamoto Ryo; Tanaka Yoshiaki
Japanese, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
30 Aug. 2011
30 Aug. 2011- 30 Aug. 2011 - B-6-64 Load Balancing Method by Estimating Traffic Load in Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
Japanese, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
30 Aug. 2011
30 Aug. 2011- 30 Aug. 2011 - BS-6-39 A Trust-aware Management Strategy Against Black Hole Attacks in MANET(BS-6. Planning, Control and Management on Networks and Services)
Yang Bo; Yamamoto Ryo; Tanaka Yoshiaki
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
30 Aug. 2011
30 Aug. 2011- 30 Aug. 2011 - BS-6-34 A Target Tracking Algorithm Considering Energy Balance in WSNs(BS-6. Planning, Control and Management on Networks and Services)
Tran-Quang Vinh; Huu Phat Nguyen; Yamamoto Ryo; Miyoshi Takumi
English, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
30 Aug. 2011
30 Aug. 2011- 30 Aug. 2011 - Routing Method by Estimating Traffic Load in Ad Hoc
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
22 Jul. 2011 - Routing Method by Estimating Traffic Load in Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/11200382, In ad hoc networks, terminals' mobility may cause dynamic changes of network topology and terminal density which may increase the traffic at a certain terminal or in a certain location. As concerns this problem, some routing-based load balancing methods which are based on traffic or transmission success rate have been proposed. However, these conventional methods consider only the load on the transmission route, and this may increase the load at neighbouring terminals of the route. In order to achieve efficient load balanced routing in ad hoc networks, this paper proposes a load balancing method based on an estimated traffic around each terminal. The proposed method monitors the neighbouring terminals' transmission and estimates a relative load based on it for better route selection. The performance and the efficiency of the proposed method are also clarified by computer simulation.
14 Jul. 2011
14 Jul. 2011- 14 Jul. 2011 - Neighbourhood-Traffic Adaptive Load Balancing Method in Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
21 Apr. 2011 - Neighbourhood-Traffic Adaptive Load Balancing Method in Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/11069793, In ad hoc networks, dynamic changes of the network topology caused by the terminals' mobility may increase the traffic load on a certain terminal or in a certain location. As concerns this problem, some traffic-based routing mechanisms to balance the load have been proposed. However, it is hard to adapt them to the environment where the traffic changes in a short period. Furthermore, these conventional methods do not consider the load on the neighbouring terminals of the transmission route. In order to achieve efficient load balancing in ad hoc networks, this paper proposes a load balancing method based on neighbouring terminals' traffic. The proposed method controls the transmission rate depending on the neighbouring terminals' load and the transmission route. The performance and the efficiency of the proposed method is also clarified by computer simulation.
14 Apr. 2011
14 Apr. 2011- 14 Apr. 2011 - Transmission Rate Control Based on Traffic Load in Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
17 Mar. 2011 - Wormhole Attack Detection and Avoidance in MANET Using Observation Report from Neighbour Nodes
Qi Wang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
17 Mar. 2011 - Wormhole Attack Detection and Avoidance Method Using Observation Report from Neighbour Nodes
Qi Wang; Ryo Yamamoto; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
04 Mar. 2011 - B-6-84 Wormhole Attack Detection and Avoidance in MANET Using Observation Report from Neighbour Nodes
Wang Qi; Yamamoto Ryo; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
28 Feb. 2011
28 Feb. 2011- 28 Feb. 2011 - B-6-85 Transmission Rate Control Based on Traffic Load in Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
28 Feb. 2011
28 Feb. 2011- 28 Feb. 2011 - Wormhole Attack Detection and Avoidance Method Using Observation Report from Neighbour Nodes
WANG Qi; YAMAMOTO Ryo; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/11048230, Wormhole attack is becoming a serious problem in ad hoc networks. In the attack, a pair of malicious nodes establishes a tunnel between two end points, and collects the transmission route of the neighbouring nodes. Therefore, the data on the route might be wiretapped, falsified, and annulled by the malicious nodes. To avoid the attack, some defence method is necessary to detect the malicious nodes. However, the conventional defence methods may cause delay increase, and their scalability is limited. In order to solve these problems, this paper proposes a novel defence method against the wormhole attack which detects neighbouring malicious nodes using observation report by normal nodes. The performance and the effectiveness of the proposed method are shown by computer simulation.
24 Feb. 2011
24 Feb. 2011- 24 Feb. 2011 - A load balancing method with adaptive transmission rate control in ad hoc networks
Asia-Pacific Network Operations and Management
2011 - Load Balancing Method Based on Neighbouring Terminals’ Activity in Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
16 Dec. 2010 - Load Balancing Method Based on Neighbouring Terminals' Activity in Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/10937610, In ad hoc networks, it is hard to realize the centralized management of network state, and dynamic changes of the network topology caused by the terminals' mobility may increase the traffic load on a certain terminal or in a certain location. As concerns this problem, some routing mechanisms to balance the network load have been proposed. However, it is hard to adapt them to the environment where the traffic changes in a short period. Furthermore, these conventional methods only consider the load on the transmission routes. For achieving efficient load balancing in ad hoc networks, this paper proposes a load balancing method based on the activity of neighbouring terminals. The proposed method controls the transmission rate depending on the states of the neighbouring terminals and of the transmission route. The performance and efficiency of the proposed method is also clarified by computer simulation.
09 Dec. 2010
09 Dec. 2010- 09 Dec. 2010 - Load Balancing Method with Transmission Rate Control on Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
17 Sep. 2010 - Cross Layer Control of Transmission Rate for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
16 Jul. 2010 - Cross Layer Control of Transmission Rate for Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/10786584, In ad hoc networks, it is hard to unify the management of network state due to an autonomously decentralized manner for network construction mechanism by mobile terminals. Topological changes may increase the traffic load on a certain terminal or location, and thus that will degrade the fairness of the whole network. As concerns this problem, the methods that modify routing mechanisms to balance the traffic load have been proposed. However, they need extra control sequence for the route modification and hardly adapt to the environment where the traffic changes in a short period. In this paper, to balance the load efficiently in ad hoc networks, cross-layer transmission rate control method is proposed. The proposed method controls the transmission rate, by limiting the maximum, depending on the state of the transmission route, and thus avoids the concentrated traffic and collisions. The performance and efficiency of the proposed method is also clarified by computer simulation.
08 Jul. 2010
08 Jul. 2010- 08 Jul. 2010 - Load Balancing Method with Cross Layer Design on Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE General Conference, Domestic conference
18 Mar. 2010 - B-6-138 Load Balancing Method with Cross Layer Design on Ad Hoc Networks
Yamamoto Ryo; Miyoshi Takumi; Tanaka Yoshiaki
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
02 Mar. 2010
02 Mar. 2010- 02 Mar. 2010 - アドホックネットワークにおける往復遅延時間を 用いた適応形トランスポートプロトコル
山本 嶺; 三好 匠; 田中良明
電子情報通信学会論文誌(B)
2010
2010 2010 - Characteristic Analysis of RTT-based Window Control Method
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
11 Dec. 2009 - Characteristic Analysis of RTT-based Window Control Method
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/10511526, In ad hoc networks, since each terminal transmits data using radio devices, segment loss frequently occurs owing to radio interference or node mobility. TCP Reno uses a segment loss to detect congestion and tries to avoid it by shrinking the congestion window size. In ad hoc networks, however, segment losses are caused by not only congestion but also interference and node mobility. Thus, unnecessary congestion avoidance decreases communication efficiency. As concern this, to improve communication efficiency, authors proposed RTT-based window control method. However, since a parameters for window control is a constant in the method, there is a possibility that the threshold would not be appropriate value for some cases. In this paper, the effect of the parameters on communication efficiency is analyzed to set the optimal parameters. This will yield better performance.
03 Dec. 2009
03 Dec. 2009- 03 Dec. 2009 - Window Control Method Considering Fairness for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi; Yoshiaki Tanaka
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
15 Sep. 2009 - B-6-5 Window Control Method Considering Fairness for Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi; TANAKA Yoshiaki
Japanese, Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers
01 Sep. 2009
01 Sep. 2009- 01 Sep. 2009 - Flow Control Method Considering Fairness for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi
Oral presentation, English, IEICE General Conference, Domestic conference
20 Mar. 2009 - BS-4-31 Flow Control Method Considering Fairness for Ad Hoc Networks(BS-4. System, control and design technologies for emerging network)
YAMAMOTO Ryo; MIYOSHI Takumi
English, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
04 Mar. 2009
04 Mar. 2009- 04 Mar. 2009 - RTT Based Flow Control Method Considering Fairness for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
03 Mar. 2009 - RTT Based Flow Control Method Considering Fairness for Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/10205146, In ad hoc netowrks, since each terminal transmits data using radio devices, segment loss frequently occurs owing to radio interference or node mobility. TCP Reno uses a segment loss to detect a congestion and tries to avoid it by shrinking the congestion window size. In ad hoc networks, however, segment losses are caused by not only congestion but also interference and node mobility. Thus, unnecessary congestion avoidance decreases a communication efficiency. As concern this, TCP Westwood that uses bandwidth estimation for congestion avoidance and TCP Vegas that uses RTT to determine the network state are proposed. This paper proposes a novel transport protocol using the relative RTT to determine the network state and considering the fairness among protocols and among terminals. The performance and effectiveness of the proposed method is clarified by computer simulation.
24 Feb. 2009
24 Feb. 2009- 24 Feb. 2009 - Flow Control Method Using Round Trip Time on Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
19 Dec. 2008 - Flow Control Method Using Round Trip Time on Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/9763314, In ad hoc networks, since each terminal transmits data using radio devices, link failure or segment loss frequently occurs owing to interferences or obstacles. If TCP Reno is used in ad hoc networks, the congestion window size shirnks into half to avoid congestion when segment losses are observed. However, segment losses are caused by not only congestion but also interference and obstacles. Thus, unnecessary window size shrink is invoked and this decreases the end-to-end throughput. As concerns this, TCP Westwood that uses bandwidth estimation for window size shrink and TCP Vegas that uses expected and measured throughput for flow control are proposed. This paper proposes a novel flow control method using the round trip time and the method for reducing redundant segment retransmission. The performance and effectiveness of the proposed method is clarified by computer simulation.
11 Dec. 2008
11 Dec. 2008- 11 Dec. 2008 - Temporary Route Modification Method for Ad Hoc Networks
Takeshi Yoshizawa; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
18 Jul. 2008 - Temporary Route Modification Method for Ad Hoc Networks
YOSHIZAWA Takeshi; YAMAMOTO Ryo; MIYOSHI Takumi
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/9603924, In ad hoc networks, since nodes set up links with each other by wireless communication, link failures may occur due to radio interferences or obstacles. If a link failure occurs on the route, the sender node must reconstruct its end-to-end transmission route. That increases network traffic caused by route discovery packets. For avoiding this problem, some retransmission control methods using neighbor nodes have been proposed. However, continuous frame loss increases retransmission delay, and may cause route destroy. This paper proposes a temporary route modification method for ad hoc networks. The performance and effectiveness of the proposed method is clarified by computer simulation.
10 Jul. 2008
10 Jul. 2008- 10 Jul. 2008 - Transport Protocol with Adaptive Congestion Control on Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
16 May 2008 - Transport Protocol with Adaptive Congestion Control on Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi
Japanese, IEICE technical report, The Institute of Electronics, Information and Communication Engineers, http://id.ndl.go.jp/bib/9527412, In ad hoc networks, since each terminal transmits data using radio devices, link failure or segment loss frequently occurs owing to interferences or obstacles. When TCP communication is used in ad hoc networks, the congestion window size shrinks as the segment losses occur, and thus the end-to-end throughput degrades. More- over, TCP maintains the own state using control segment, which increases the network load. This paper proposes a novel flow control method using round trip time and simplified state transition to increase overall transmission efficiency. The performance and effectiveness of the proposed method is clarified by computer simulation.
15 May 2008
15 May 2008- 15 May 2008 - Temporary Relay Control Method Using Neighbor Nodes for Ad Hoc Networks
Takeshi Yoshizawa; Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE General Conference, Domestic conference
19 Mar. 2008 - B-21-10 Temporary Relay Control Method Using Neighbor Nodes for Ad Hoc Networks
YOSHIZAWA Takeshi; YAMAMOTO Ryo; MIYOSHI Takumi
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
05 Mar. 2008
05 Mar. 2008- 05 Mar. 2008 - Distributed retransmission method using neighbor terminals for ad hoc networks
14th Asia-Pacific Conference on Communications
2008 - Transmission Control Method with Neighbor Terminal for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE General Conference, Domestic conference
22 Mar. 2007 - Distributed Retransmission Method Using Neighbor Terminals for Ad Hoc Networks
Ryo Yamamoto; Takumi Miyoshi
Oral presentation, Japanese, IEICE Technical Report, Technical Committee on Network Systems, Domestic conference
09 Mar. 2007 - B-21-43 Transmission Control Method with Neighbor Terminal for Ad Hoc Networks
YAMAMOTO Ryo; MIYOSHI Takumi
Japanese, Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers
07 Mar. 2007
07 Mar. 2007- 07 Mar. 2007
Courses
- Algorithm and Data Structure A
2021 - Present
Waseda University, Undergraduate liberal arts - Network Architecture
2021 - Present
The University of Electro-Communications, Postgraduate courses - 暗号情報セキュリティ
2017 - Present
The University of Electro-Communications, Undergraduate special subjects - Information Processing Excise I
2014 - Present
Shibaura Institute of Technology - Traffic Network Engineering
2014 - Present
Shibaura Institute of Technology, Undergraduate special subjects - Algorithms and Data Structures and Programming Exercises
2017 - 2024
The University of Electro-Communications, Undergraduate special subjects - Programming Language Experiment
2017 - 2023
The University of Electro-Communications, Undergraduate special subjects - 情報ネットワーク学基礎2
2014 - 2016
The University of Electro-Communications, Postgraduate courses - 総合コミュニケーション科学
The University of Electro-Communications - 総合コミュニケーション科学
電気通信大学 - 総合情報学基礎
The University of Electro-Communications - 総合情報学基礎
電気通信大学
Affiliated academic society
Research Themes
- A router cache priority control for low latency communication system
大坐畠智
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (B), 22H03577
01 Apr. 2022 - 31 Mar. 2026 - ヘテロジニアス環境へのネットワーク仮想化基盤適用技術の研究
山本 嶺
日本学術振興会, 科学研究費助成事業 基盤研究(C), 電気通信大学, 基盤研究(C), 23K11082
Apr. 2023 - Mar. 2026 - 無線伝搬状況に応じた端末間動的制御に関する研究
三菱電機株式会社, Principal investigator
Apr. 2023 - Mar. 2024 - Integrated Communication Control for Heterogeneous IoT/M2M Networks
山本嶺
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (C), 本年度の検討では，主にa)無線資源配分方式の調査および基礎検討，b)各種通信メディアにおける通信特性に起因する非対称リンクが存在した場合の効率的なルーチング，c)Fogコンピューティングを利用した処理負荷分散方式の検討を実施した．
aでは，実ネットワーク上に存在する通信資源を有効活用するため，ネットワーク仮想化のコンセプトを取り入れて実ネットワークとオーバレイネットワークを紐付ける方式について検討を行った．本検討では，従来ユーザが直接利用していた実ネットワークの資源を上位に構築したオーバレイネットワークでマスクすることによってユーザの可用性を高める方式について検討を行っている．一方，この方式では実ネットワークの資源とオーバレイネットワークを適切に紐付けする必要があることから，環境変動が大きい無線ネットワークに適していない．そのため，従来考案されていた有線向けの手法を改良し，制約条件を緩和することでベストエフォート型の資源配分を実現する手法の提案を行っている． bでは，通信メディアの差異による通信速度や通信可能距離に起因して発生する非対称リンクによる通信を有効に活用するため，適応的な経路制御が可能なOpportunistic Routingを導入し，非対称リンクが存在する環境かでも適切な経路確保が可能な転送端末選択手法について検討を行った．本年度の検討では主に，問題の定式化と理論的な解析を実施し，予備実験によって非対称リンクの有無による通信性能変化を観察した． cでは，前年に引き続きIoTネットワークにおいて発生するデータを適切に処理するため，Fogコンピューティングと呼ばれる処理形態を取り入れたシステムについて検討を行った．本検討では，以前の結果を踏まえ，より効率的にタスクを配分する方式について検討を行った．, 20K11765
01 Apr. 2020 - 31 Mar. 2023 - Self-Evolving Vehicular Edge Platform for Next Generation Mobility Support
Ji Yusheng
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, National Institute of Informatics, Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), This research aimed to design algorithms and frameworks for vehicular edge planform for the internet of vehicles to support next-generation mobility, which will be enabled by Intelligent Transportation Systems and autonomous vehicles. To cope with the dynamic network environment due to the mobility of vehicles, the scarcity of wireless resources, and the variety of application requirements, we studied the methodology and algorithms of optimal selections of wireless technologies and routing decisions for vehicle-to-vehicle and vehicle-to-infrastructure communications, as well as context-aware resource allocation for computation and communications in a distributed and autonomous manner, and proposed online deep reinforcement learning-based framework for realizing self-evolving resource control and management., 18KK0279
09 Oct. 2018 - 31 Mar. 2022 - 次世代モビリティをサポートする自己進化型車載エッジプラットフォームの研究開発
計 宇生
01 Apr. 2018 - 31 Mar. 2022 - IoTネットワークにおけるネットワーク独立型異常検知および対策手法の研究
山本嶺
公益財団法人電気通信普及財団, 研究調査助成
01 Apr. 2020 - 31 Mar. 2021 - COVID-19感染検査・医療リソースシミュレーション
山本嶺
株式会社三菱総合研究所, Principal investigator, Domestic joint research
2021 - 2021 - 無線通信における制御技術とシミュレーション技法
矢崎総業株式会社, 学術相談
01 Dec. 2019 - 20 Jun. 2020 - COVID-19感染検査・医療リソースシミュレーション
山本嶺
株式会社三菱総合研究所, Principal investigator, Domestic joint research
2020 - 2020 - 無線通信における制御技術
矢崎総業株式会社, 学術相談
01 Apr. 2019 - 30 Sep. 2019 - 無線通信技術に関する研究
矢崎総業, 研究助成, Principal investigator
01 Apr. 2018 - Network-Driven Packet Transfer Method on Wireless Ad Hoc Networks
Yamamoto Ryo; OKAMURA Yasushi; KATO Toshihiko; OHZAHATA Satoshi; YAMAZAKI Taku; TANAKA Yoshiaki; MIYOSHI Takumi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Young Scientists (B), Principal investigator, This research aims to improve the communication performance of wireless ad hoc networks, which consists of terminals equipped with wireless communication devices without the help of communication infrastructures such as base stations and access points. Wireless ad hoc networks generally take source terminal-driven communication control principle and it may face the difficulties in network state prehension and adaptive communication control. This research studied a novel network-driven communication control which does not require controls on source terminals to address the former issues. The performance evaluation confirms that the proposed method could achieve higher communication performance, such as reliability and efficiency., 15K15978
01 Apr. 2015 - 31 Mar. 2018 - 無線通信技術に関する研究
矢崎総業, 研究助成, Principal investigator
01 Apr. 2016 - 無線通信技術に関する研究
矢崎総業, 研究助成, Principal investigator
01 Apr. 2014 - Integrative transmission control mechanism for ad hoc networks
YAMAMOTO Ryo
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Waseda University, Grant-in-Aid for Young Scientists (B), Principal investigator, With the rapid spread of wireless terminals, ad hoc networks that enables distributed and autonomous network establishment have attracted a lot of attentions. However, terminals' mobility or vulnerable nature of wireless communication make it unstable compared with the one with fixed infrastructure. As concerns this problem, a lot of methods under a specific layer have proposed. That is, the methods only covers limited range of transmission controls. This research focuses on cross-layered mechanism to overcome the unstable communication nature of ad hoc networks. With the mechanisms proposed in this research, transmission efficiency has improve by controlling traffic using broad information from multiple layer., 24700076
01 Apr. 2012 - 31 Mar. 2014
Industrial Property Rights
- 無線通信ノードおよび無線通信システム
Patent right, 細川 元気, 山本 嶺, 山崎 託, 國立 忠秀, 特願2019-148428, Date applied: 13 Aug. 2019, 矢崎総業株式会社 , 国立大学法人電気通信大学 , 学校法人芝浦工業大学, 特開2021-34742, Date announced: 01 Mar. 2021, 特許第7320226, Date registered: 26 Jul. 2023, Date issued: 03 Aug. 2023, Domestic, Domestic - 通信システム、中継装置および中継方法
Patent right, 國立 忠秀, 山本 嶺, 山崎 託, 細川 元気, 特願2019-041506, Date applied: 07 Mar. 2019, 矢崎総業株式会社 , 国立大学法人電気通信大学 , 学校法人芝浦工業大学, 特許第7299590, Date registered: 20 Jun. 2023, Date issued: 28 Jun. 2023, Domestic, Domestic, - 通信システム、中継装置および中継方法
Patent right, 細川 元気, 國立 忠秀, 山本 嶺, 山崎 託, 特願2019-112878, Date applied: 18 Jun. 2019, 矢崎総業株式会社, 国立大学法人電気通信大学, 学校法人 芝浦工業大学, 特開2020-205555, Date announced: 24 Dec. 2020, 特許第7253189号, Date registered: 29 Mar. 2023, Domestic, Domestic - 無線通信ノードおよび無線通信システム
Patent right, 細川 元気, 國立 忠秀, 山本 嶺, 山崎 託, 特願2019-148428, Date applied: 13 Aug. 2019, 矢崎総業株式会社, 国立大学法人電気通信大学, 学校法人 芝浦工業大学, 特開2021-034742, Date announced: 01 Mar. 2021 - 無線通信ノードおよび無線通信システム
Patent right, 細川 元気, 國立 忠秀, 山本 嶺, 山崎 託, 特願2019-148428, Date applied: 13 Aug. 2019, 矢崎総業株式会社 , 国立大学法人電気通信大学 , 学校法人芝浦工業大学 - 通信システム、中継装置および中継方法
Patent right, 細川 元気 , 國立 忠秀 , 山本 嶺 , 山崎 託, 特願2019-112878, Date applied: 18 Jun. 2019, 矢崎総業株式会社 , 国立大学法人電気通信大学 , 学校法人芝浦工業大学, Domestic - 通信システム、中継装置および中継方法
Patent right, 國立 忠秀, 山本 嶺, 山崎 託, 細川 元気, 特願2019-041506, Date applied: 07 Mar. 2019, 矢崎総業株式会社 , 国立大学法人電気通信大学 , 学校法人芝浦工業大学
Social Contribution Activities
Academic Contribution Activities
- IEEE/IFIP Network Operations and Management Symposium Poster Co-Chair
Academic society etc, Planning etc, Apr. 2023 - Jun. 2024 - The 24th Asia-Pacific Network Operations and Management Syposium
Academic society etc, Planning etc, Sep. 2023 - The 23th Asia-Pacific Network Operations and Management Syposium
Academic society etc, Planning etc, Sep. 2022 - 他大学評価委員、各種研究費等の審査委員 日本技術者認定機構審査員
Review, 01 Apr. 2021 - 31 Mar. 2022, 継続審査 - 教務および実験・実習・実技等に関する実務・設備の管理運営
Others, Others, Mar. 2022, ハラスメント防止ＦＤ研修 - 大学・学部・学科/部会・教科（含む実験等）の教育プログラム等の改善・修正などへの関与
Others, Planning etc, Jan. 2022, シラバスに関するFD講習会 - The 22th Asia-Pacific Network Operations and Management Syposium
Academic society etc, Others, Sep. 2021 - IEICE Transactions on Communications
Peer review etc, Peer review, May 2020 - May 2021 - データ構造とアルゴリズムA（早稲田大学） 非常勤講師
Others, Others, Apr. 2021 - 教務および実験・実習・実技等に関する実務・設備の管理運営
Others, Others, Mar. 2021, ハラスメント防止ＦＤ研修 - The 21th Asia-Pacific Network Operations and Management Syposium
Academic society etc, Others, 23 Sep. 2020 - IEEE ICCE-TW 2021
Academic society etc, Others, 25 May 2020 - IEICE Transactions on Communications
Peer review etc, Peer review, May 2019 - May 2020 - 教務および実験・実習・実技等に関する実務・設備の管理運営
Others, Others, Oct. 2019 - Oct. 2019, 後学期 アルゴリズムとデータ構造およびプログラミング演習に関する打合せ アルゴリズムとデータ構造およびプログラミング演習の準備のための議論を行った - The 20th Asia-Pacific Network Operations and Management Syposium
Academic society etc, Others, 22 Sep. 2019 - IEICE Transactions on Communications
Peer review etc, Peer review, May 2018 - May 2019 - 教務および実験・実習・実技等に関する実務・設備の管理運営
Others, Others, Sep. 2018 - Sep. 2018, 後学期 アルゴリズムとデータ構造およびプログラミング演習に関する打合せ アルゴリズムとデータ構造およびプログラミング演習の準備のための議論を行った - IEICE Transactions on Communications
Peer review etc, Peer review, Sep. 2017 - May 2018 - 13th International Conference on Network and Service Management
Academic society etc, Others, 26 Nov. 2017 - The 19th Asia-Pacific Network Operations and Management Syposium
Academic society etc, Others, 27 Sep. 2017 - 教務および実験・実習・実技等に関する実務・設備の管理運営
Others, Others, Jun. 2017 - Sep. 2017, 後学期 アルゴリズムとデータ構造およびプログラミング演習に関する打合せ アルゴリズムとデータ構造およびプログラミング演習の新規立ち上げに関し，準備のための議論を行った - 通信網工学（芝浦工業大学） 情報処理演習Ⅰ（芝浦工業大学） 非常勤講師
Others, Others, Apr. 2014 - 早稲田大学 招聘研究員
Others, Others, Apr. 2014