KATSUYA SUTO
| Department of Computer and Network Engineering | Associate Professor |
| Cluster II (Emerging Multi-interdisciplinary Engineering) | Associate Professor |
| Meta-Networking Research Center | Associate Professor |
| Advanced Wireless Communication Research Center | Associate Professor |
Researcher Information
Degree
Research Keyword
Field Of Study
Career
- Mar. 2023 - Present
The University of Electro-Communications, Graduate School of Informatics and Engineering, Associate Professor - Mar. 2018 - Mar. 2023
The University of Electro-Communications, Assistant Professor - 01 Apr. 2016 - 03 Mar. 2018
Japan Society for the Promotion of Science, Postdoctral Fellowship for Research Abroad - 01 Apr. 2016 - 03 Mar. 2018
University of Waterloo, Postdoctoral Fellow - 01 Apr. 2014 - 31 Mar. 2016
Japan Society for the Promotion of Science, Research Fellowship for Young Scientists
Educational Background
- 01 Apr. 2013 - 24 Mar. 2016
Tohoku University, Graduate School of Information Sciences - 01 Apr. 2011 - 27 Mar. 2013
Tohoku University, Graduate School of Information Sciences - 01 Apr. 2009 - 23 Mar. 2011
Iwate University, Faculty of engineering, Information system engineering - 01 Apr. 2004 - 31 Mar. 2009
Ichinoseki National College of Technology
Member History
- Jan. 2024 - Present
Technical Affairs Committee (TAC) Vice-Chair, IEEE Asia/Pacific Region Board, Society - Jun. 2022 - Jun. 2026
幹事補佐, 電子情報通信学会スマート無線研究会, Society - Jun. 2023 - May 2025
ハンドブック／知識ベース委員会委員, 電子情報通信学会, Society - Jun. 2023 - May 2025
通信ソサイエティ執行委員会ハンドブック幹事, IEICE, Society - Apr. 2020 - Jan. 2024
Associate Editor, International Journal of Computers and Applications, Society - Dec. 2022 - Sep. 2023
TPC Co-Chair, IEEE/CIC International Conference on Communications in China (ICCC), Society - 04 Jun. 2020 - 08 Jun. 2022
専門委員, 電子情報通信学会スマート無線研究会, Society
Research Activity Information
Award
- Sep. 2024
電子情報通信学会
通信ソサイエティ活動功労賞 - Jun. 2023
IEEE VTS Japan Chapter
Young Researcher’s Encouragement Award, Masaaki Miura;Katsuya Suto;Koya Sato;Onel Luis Alcaraz López - Jan. 2023
IEICE Technical Committee on Smart Radio
ドローンを用いた電波観測による3次元空間補間性能の実験的評価
Research Encouragement Award, 須藤克弥, 坂内信允 - Mar. 2022
電子情報通信学会スマート無線研究会
無線給電センサネットワークにおける統計的チャネル品質に基づいたタイムスロット割り当て手法に関する一考察
研究奨励賞, 寺内健;須藤克弥;若生将史 - Apr. 2021
IEEE VTS Japan Chapter
Harvest-Then-Transmit-Based TDMA Protocol with Statistical Channel State Information for Wireless Powered Sensor Networks
Young Researcher’s Encouragement Award, Takeru Terauchi;Katsuya Suto;Masashi Wakaiki - Nov. 2019
Cloudlets Activation Scheme for Scalable Mobile Edge Computing with Transmission Power Control and Virtual Machine Migration
IEEE Transactions on Computers 2018 Best Paper Award - May 2016
IEEE ICC 2016 Best Paper Award - Mar. 2016
IEICE Tohoku Encouragement Award to Student Branch Activity - Nov. 2015
Certificate of appreciation from the municipality of San Remigio, Republic of the Philippines - Nov. 2015
IEEE/CIC ICCC 2015 Best Paper Award - Nov. 2015
Certi cate of appreciation from the municipality of San Remigio, Republic of the Philippines - May 2015
IEEE VTS Japan Encouragement Award - Mar. 2014
IEICE Academic Encouragement Award - Jun. 2013
IEEE VTC 2013-Spring Best Paper Award - Mar. 2013
Dean's Award of Graduate School of Information Sciences, Tohoku University
Paper
- Radio Propagation Graph Representation Learning: An Implementation in Multi-Hop Path Representation
Shimon Takagi; Shinsuke Bannai; Koya Sato; Takeo Fujii; Katsuya Suto
Corresponding, IEEE 35th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, Sep. 2024, Peer-reviwed
International conference proceedings - Blockage Prediction with Pseudo-LiDAR Signature for mmWave V2I Communications
Shinsuke Bannai; Katsuya Suto
Corresponding, ASPIRE 2024 Green IoT workshop, 1-1, Mar. 2024, Peer-reviwed
International conference proceedings - Stereo-Aided Blockage Prediction for mmWave V2X Communications
Corresponding, International Conference on Computing, Networking and Communications 2024, 1-5, Feb. 2024, Peer-reviwed
International conference proceedings - Multi-UAVs Strategies for Ad Hoc Network with Multi-Agent Reinforcement Learning
George Karimata; Jin Nakazato; Gia Khanh Tran; Katsuya Suto; Manabu Tsukada; Hiroshi Esaki
International Conference on Information Networking 2024, 1-4, Jan. 2024, Peer-reviwed
International conference proceedings - Deep Joint Source-Channel Coding with Optimal Compression Rate for mmWave Mobile Image Transmission
Junichiro Yamada; Katsuya Suto
Corresponding, IEEE Consumer Communications & Networking Conference 2024, 1-2, Jan. 2024, Peer-reviwed
International conference proceedings - Performance Analysis for IRS-Assisted SWIPT with Geometry-Based Phase Shift
Masaaki Miura; Katsuya Suto
Corresponding, IEEE Consumer Communications & Networking Conference 2024, 1-2, Jan. 2024, Peer-reviwed
International conference proceedings - Observation Data and 3D Map-based Radio Environment Estimation for Drone Wireless Communications
Shota Yamada; Takeo Fujii; Katsuya Suto; Koya Sato
2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN), IEEE, 04 Jul. 2023, Peer-reviwed
International conference proceedings - Propagation Graph Representation Learning and Its Implementation in Direct Path Representation
Katsuya Suto; Shinsuke Bannai; Koya Sato; Takeo Fujii
Lead, IEEE WCNC International Workshop on Smart Spectrum, Mar. 2023, Peer-reviwed
International conference proceedings - Exploring Pseudo-Analog Video Transmission for Edge-AI Vision Applications
Junichiro Yamada; Katsuya Suto
Corresponding, IEEE CCNC 2023, 1-2, 08 Jan. 2023, Peer-reviwed
International conference proceedings, English - Deterministic Video Streaming with Deep Learning Enabled Base Station Intervention for Stable Remote Driving System
Kohei Kato; Katsuya Suto; Koya Sato
IEE ICC'21 workshop on TsDN, 1-6, 14 Jun. 2021, Peer-reviwed
International conference proceedings, English - Image-Driven Spatial Interpolation with Deep Learning for Radio Map Construction
Katsuya Suto; Shinsuke Bannai; Koya Sato; Kei Inage; Koichi Adachi; Takeo Fujii
IEEE Wireless Communications Letters, IEEE, 10, 6, 1222-1226, Jun. 2021, Peer-reviwed
Scientific journal, English - Harvest-Then-Transmit-Based TDMA Protocol with Statistical Channel State Information for Wireless Powered Sensor Networks
Takeru Terauchi; Katsuya Suto; Masashi Wakaiki
IEEE 93rd Vehicular Technology Conference, 1-5, 25 Apr. 2021, Peer-reviwed
International conference proceedings, English - Space-Frequency-Interpolated Radio Map
Koya Sato; Katsuya Suto; Kei Inage; Koichi Adachi; Takeo Fujii
IEEE Transactions on Vehicular Technology, IEEE, 70, 1, 714-725, 08 Jan. 2021, Peer-reviwed
Scientific journal, English - On Radio Propagation Estimation based on Deep Learning withConvolution and Self-attention
Riku Hashimoto; Katsuya Suto
International Conference on Emerging Technologies for Communications, 1-1, Dec. 2020, Peer-reviwed
International conference proceedings, English - Spatial Extrapolation with Generative Adversarial Networks forRadio Map Construction
Shinsuke Bannai; Katsuya Suto
International Conference on Emerging Technologies for Communications, 1-1, Dec. 2020, Peer-reviwed
International conference proceedings, English - SICNN: Spatial Interpolation with Convolutional Neural Networks for Radio Environment Mapping
Riku Hashimoto; Katsuya Suto
ICAIIC 2020, 167-170, Feb. 2020, Peer-reviwed
International conference proceedings, English - Edge Cloud Server Deployment with Transmission Power Control through Machine Learning for 6G Internet of Things
Tiago Koketsu Rodrigues; Katsuya Suto; Nei Kato
IEEE Transactions on Emerging Topics in Computing, Institute of Electrical and Electronics Engineers (IEEE), n/a, n/a, n/a-n/a, Dec. 2019, Peer-reviwed
Scientific journal, English - Crowdsensing Based Spectrum Database with Total Variation Regularization
Katsuya Suto; Riku Hashimoto
IEEE DySPAN 2019 Workshop on Data-Driven Dynamic Spectrum Sharing, 1-6, Nov. 2019, Peer-reviwed
International conference proceedings, English - Privacy-preserved Cell Zooming with Distributed Optimization in Green Networks
Masashi Wakaiki; Katsuya Suto; Izumi Masubuchi
IEEE 90th VTC2019-Fall, 1-5, Sep. 2019, Peer-reviwed
International conference proceedings, English - A Control-Theoretic Approach for Cell Zooming of Energy Harvesting Small Cell Networks
Masashi Wakaiki; Katsuya Suto; Kenta Koiwa; Kang-Zhi Liu; Tadanao Zanma
IEEE Transactions on Green Communications and Networking, Institute of Electrical and Electronics Engineers (IEEE), 3, 2, 329-342, Jun. 2019, Peer-reviwed
Scientific journal, English - Model Predictive Joint Transmit Power Control for Improving System Availability in Energy-Harvesting Wireless Mesh Networks
Katsuya Suto; Hiroki Nishiyama; Nei Kato; Toshiaki Kuri
IEEE Communications Letters, IEEE, 22, 10, 2112-2115, Oct. 2018, Peer-reviwed
Scientific journal, English - Cloudlets Activation Scheme for Scalable Mobile Edge Computing with Transmission Power Control and Virtual Machine Migration
Tiago Gama Rodrigues; Katsuya Suto; Hiroki Nishiyama; Nei Kato
IEEE Transactions on Computers, 67, 9, 1287-1300, Sep. 2018, Peer-reviwed, Mobile devices have several restrictions due to design choices that guarantee their mobility. A way of surpassing such limitations is to utilize cloud servers called cloudlets on the edge of the network through Mobile Edge Computing. However, as the number of clients and devices grows, the service must also increase its scalability in order to guarantee a latency limit and quality threshold. This can be achieved by deploying and activating more cloudlets, but this solution is expensive due to the cost of the physical servers. The best choice is to optimize the resources of the cloudlets through an intelligent choice of configuration that lowers delay and raises scalability. Thus, in this paper we propose an algorithm that utilizes Virtual Machine Migration and Transmission Power Control, together with a mathematical model of delay in Mobile Edge Computing and a heuristic algorithm called Particle Swarm Optimization, to balance the workload between cloudlets and consequently maximize cost-effectiveness. Our proposal is the first to consider simultaneously communication, computation, and migration in our assumed scale and, due to that, manages to outperform other conventional methods in terms of number of serviced users.
Scientific journal, English - Cooperative Edge Caching in User-Centric Clustered Mobile Networks
Shan Zhang; Peter He; Katsuya Suto; Peng Yang; Lian Zhao; Xuemin (Sherman) Shen
IEEE Transactions on Mobile Computing, IEEE, 17, 8, 1791-1805, Aug. 2018, Peer-reviwed
Scientific journal, English - Secure and Efficient Privacy-Preserving Ciphertext Retrieval in Connected Vehicular Cloud Computing
Kai Fan; Xin Wang; Katsuya Suto; Hui Li; Yintang Yang
IEEE Network, IEEE, 32, 3, 52-57, Jun. 2018, Peer-reviwed
Scientific journal, English - Model Predictive Cell Zooming for Energy-harvesting Small Cell Networks
Masashi Wakaiki; Katsuya Suto; Kenta Koiwa; Kang-Zhi Liu; Tadanao Zanma
IEEE International Conference on Communications, IEEE, 1-6, May 2018, Peer-reviwed, This paper addresses the real-time control of transmission power for small cell base stations (SBSs) exploiting energy-harvesting sources. We employ model predictive control and optimize an objective function that contains the number of users with a given quality of experience and the average state of charge. We first determine the number of active SBSs in the viewpoint of energy efficiency and then approximate the objective function. Finally, we illustrate the proposed method through a numerical example, comparing it with a static method based on statistical information.
International conference proceedings, English - Traffic Steering Assisted Mobile Edge Caching: Exploiting Spatial Content Diversity Gain
Shan Zhang; Peter He; Katsuya Suto; Peng Yang; Lian Zhao; Sherman Shen
IEEE Global Communications Conference, 1-6, Dec. 2017, Peer-reviwed
International conference proceedings, English - Postdisaster User Location Maneuvering Method for Improving the QoE Guaranteed Service Time in Energy Harvesting Small Cell Networks
Katsuya Suto; Hiroki Nishiyama; Nei Kato
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 66, 10, 9410-9420, Oct. 2017, Peer-reviwed, The concept of energy harvesting small cell networks (EH-SCNs) has attracted a great deal of attention due to their potential to meet the exponential growth of mobile data traffic with low capital expenditure and operating expenditure. In addition, they are expected to work as a postdisaster wireless access network since exploiting green energy sources to power small cell base stations can overcome the power disruption caused by disasters. However, since the amount of harvested power is not enough for the stable network operation, the networks need to equipped with energy-efficient networking techniques. Additionally, in order to share the accurate postdisaster information, the networks should satisfy a certain quality of experience (QoE) of users in disaster areas. To deal with these challenges, we propose a user location maneuvering method, which advisory controls user's movement to improve the service time of EH-SCNs while guaranteeing a certain QoE level. We also propose an algorithm based on particle swarm optimization, which is configured with appropriate settings to find the best location of users efficiently. Extensive computer simulations show that the proposed maneuvering method can improve the QoE guaranteed service ratio, compared with the existing network operation approaches.
Scientific journal, English - Cyber Physical Systems for Intelligent Disaster Response Networks: Conceptual Proposal and Field Experiment
Hiroki Nishiyama; Katsuya Suto; Hideki Kuribayashi
IEEE NETWORK, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 31, 4, 120-128, Jul. 2017, Peer-reviwed, After large-scale natural disasters, such as the Great East Japan Earthquake of 2011, the demand for communication increases and continuously changes due to fluctuating environmental factors and demand from people, seeking to confirm the safety of others and intending to organize forces to react to the disaster situation. However, it is likely that reaching the communication service is difficult because the communication infrastructure may be damaged or out of use. To provide information communication technology (ICT) services in such circumstances, we propose an ICT system with intelligence, which can adapt to continuously changing conditions in disaster situations. This system is realized by the implementation of the cyber physical system (CPS) to networks, and we explain its capabilities to provide ICT services in disaster situations. Moreover, we explain the field experiment in which we constructed a CPS-equipped network in the Philippines. The successful results demonstrate the effectiveness and the feasibility of disaster-resilient CPS.
Scientific journal, English - Hybrid Method for Minimizing Service Delay in Edge Cloud Computing Through VM Migration and Transmission Power Control
Tiago Gama Rodrigues; Katsuya Suto; Hiroki Nishiyama; Nei Kato
IEEE TRANSACTIONS ON COMPUTERS, IEEE COMPUTER SOC, 66, 5, 810-819, May 2017, Peer-reviwed, Due to physical limitations, mobile devices are restricted in memory, battery, processing, among other characteristics. This results in many applications that cannot be run in such devices. This problem is fixed by Edge Cloud Computing, where the users offload tasks they cannot run to cloudlet servers in the edge of the network. The main requirement of such a system is having a low Service Delay, which would correspond to a high Quality of Service. This paper presents a method for minimizing Service Delay in a scenario with two cloudlet servers. The method has a dual focus on computation and communication elements, controlling Processing Delay through virtual machine migration and improving Transmission Delay with Transmission Power Control. The foundation of the proposal is a mathematical model of the scenario, whose analysis is used on a comparison between the proposed approach and two other conventional methods; these methods have single focus and only make an effort to improve either Transmission Delay or Processing Delay, but not both. As expected, the proposal presents the lowest Service Delay in all study cases, corroborating our conclusion that a dual focus approach is the best way to tackle the Service Delay problem in Edge Cloud Computing.
Scientific journal, English - A PSO Model with VM Migration and Transmission Power Control for Low Service Delay in the Multiple Cloudlets ECC Scenario
Tiago Gama Rodrigues; Katsuya Suto; Hiroki Nishiyama; Nei Kato
IEEE International Conference on Communications, 1-6, May 2017, Peer-reviwed
International conference proceedings, English - QoE-Guaranteed and Power-Efficient Network Operation for Cloud Radio Access Network with Power over Fiber
Katsuya Suto; Keisuke Miyanabe; Hiroki Nishiyama; Nei Kato; Hirotaka Ujikawa; Ken-Ichi Suzuki
IEEE Transactions on Computational Social Systems, IEEE, 2, 4, 127-136, Feb. 2016, Peer-reviwed
Scientific journal, English - A Mobility-Based Mode Selection Technique for Fair Spatial Dissemination of Data in Multi-Channel Device-to-Device Communication
Hideki Kuribayashi; Katsuya Suto; Hiroki Nishiyama; Nei Kato; Kimihiro Mizutani; Takeru Inoue; Osamu Akashi
2016 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), IEEE, 56-61, 2016, Peer-reviwed, Wireless communication devices have spread widely in our society. However, they usually depend heavily on communication infrastructure, leaving them vulnerable to disasters or congestion of base stations. In these situations, a method to send out data without the support of infrastructure is required. Data transmission by D2D communication is a reliable method that does not rely on infrastructure. In this paper, we aim to improve the data dissemination using D2D transmission by applying the concept of assigning "modes" to devices according to their own mobility. In our study, we assume a multi-channel environment, where devices will be allocated different amounts of frequency channels according to their modes. We propose a mode selection function that uses velocity information of the devices to assign modes. By using this function, it is possible to allocate more frequency channels to devices of high mobility, so that they can transmit their data to more devices as they move through a wide area. By mathematical analysis, we evaluate the fairness of disseminated data density among devices of various velocities and the obtained results indicate the effectiveness of the proposed method for improving the efficiency of data dissemination.
International conference proceedings, English - Towards a Low-Delay Edge Cloud Computing Through a Combined Communication and Computation Approach
Tiago Gama Rodrigues; Katsuya Suto; Hiroki Nishiyama; Nei Kato; Kimihiro Mizutani; Takeru Inoue; Osamu Akashi
2016 IEEE 84TH VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL), IEEE, 1-5, 2016, Peer-reviwed, There are many applications which cannot be executed by mobile devices due to their limitations in memory, processing, battery, among others. One solution to this would be offloading heavy tasks to cloud servers in the edge of the network, in a service model called Edge Cloud Computing. The main Quality of Service requirement of this model is a low Service Delay, which can be achieved by lowering Transmission Delay and Processing Delay. Works in literature focus on either one of those two types of delay. This paper, however, argues that an approach which combines transmission and processing technologies to lower Service Delay would be more efficient. This idea is defended by an analysis of the service model and existing stochastic modeling of the Edge Cloud Computing system. We conclude that a dual focus approach would be the only way of truly minimizing the Service Delay, therefore being the desired method to improve Quality of Service. We conclude by laying the foundation for a future model that follows such concept.
International conference proceedings, English - QoE-Guaranteed and Sustainable User Position Guidance for Post-Disaster Cloud Radio Access Network
Katsuya Suto; Tiago Gama Rodrigues; Hiroki Nishiyama; Nei Kato; Hirotaka Ujikawa; Ken-Ichi Suzuki
2016 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM), IEEE, 1-6, 2016, Peer-reviwed, A concept of Cloud Radio Access Networks (CRANs) with Power over Fiber (PoF) is expected to work as a post-disaster access network architecture. In this architecture, since external power is supplied to Remote Radio Heads (RRHs) through the optical-fiber cable for data communication, RRHs can operate even when power cables are disrupted due to disasters. This network, however, needs to reduce the power consumption for RRH operation and consider Quality of Experience (QoE) to provide sustainable service with enough user satisfaction. To this end, we propose user position guidance approaches which give advices of the best position to users. Our proposed approaches are able to achieve high sustainability while satisfying the QoE constraint. Furthermore, the effectiveness of our proposed approaches is evaluated by numerical calculation.
International conference proceedings, English - A CLOUD RADIO ACCESS NETWORK WITH POWER OVER FIBER TOWARD 5G NETWORKS: QOE-GUARANTEED DESIGN AND OPERATION
Keisuke Miyanabe; Katsuya Suto; Zubair Md. Fadlullah; Hiroki Nishiyama; Nei Kato; Hirotaka Ujikawa; Ken-Ichi Suzuki
IEEE WIRELESS COMMUNICATIONS, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 22, 4, 58-64, Aug. 2015, Peer-reviwed, While the concept of Cloud Radio Access Networks (C-RANs) presents a promising solution to provide required quality of service (QoS) for the future network environment, i.e., more than 10 Gbps capacity, less than 1 ms latency, and connectivity for numerous devices, it is still susceptible to quality of experience (QoE) problems. Until now, only a few researchers considered the design and operation of C-RANs based on QoE. In this article we describe our envisioned C-RAN based on passive optical networks (PONs) exploiting power over fiber (PoF), which can be installed with low installation cost and is capable of providing communication services without external power supply for remote radio head (RRH), and describe QoE requirement on the envisioned network. For all users in the envisioned network to satisfy their QoE, effective network design and operation approaches are then presented. Our proposed design and operation approaches demonstrate how to construct the envisioned network, i.e. the numbers of RRHs and optical line terminals (OLTs), and sleep scheduling of RRHs for an energy-efficient optical power transmission.
Scientific journal, English - 無線データセンタにおける規模と耐障害性の関係の評価
齋藤 悠; 須藤 克弥; 西山 大樹; 加藤 寧
電気関係学会東北支部連合大会講演論文集, 電気関係学会東北支部連合大会実行委員会, 2015, 222-222, 2015
Japanese - A Failure-Tolerant and Spectrum-Efficient Wireless Data Center Network Design for Improving Performance of Big Data Mining
Katsuya Suto; Hiroki Nishiyama; Nei Kato; Takayuki Nakachi; Toshikazu Sakano; Atsushi Takahara
2015 IEEE 81ST VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING), IEEE, 1-5, 2015, Peer-reviwed, Wireless Data Center Network (Wi-DCN) is considered one of the most promising future data center architectures due to its low installation and management cost and high flexibility of network design. However, the existing Wi-DCN is, still, not capable of providing an efficient big data mining service such as MapReduce because its topology (i.e., Cayley graph with same degree) cannot achieve enough connectivity on the breakdown of servers and spectrum efficiency, which are important factors to improve the performance of big data mining. Therefore, in order to modify the existing Wi-DCN for big data mining, this paper proposes a spherical rack architecture based on a bimodal degree distribution that improves both failure tolerance and spectrum efficiency. Extensive computer simulations demonstrate the effectiveness of our proposed rack architecture in terms of data transmission time required for MapReduce under a failure-prone environment.
International conference proceedings, English - An Energy-Efficient and Delay-Aware Wireless Computing System for Industrial Wireless Sensor Networks
Katsuya Suto; Hiroki Nishiyama; Nei Kato; Chih-Wei Huang
IEEE ACCESS, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 3, 1026-1035, 2015, Peer-reviwed, Industrial wireless sensor networks have attracted much attention as a cornerstone to making the smart factories real. Utilizing industrial wireless sensor networks as a base for smart factories makes it possible to optimize the production line without human resources, since it provides industrial Internet of Things service, where various types of data are collected from sensors and mined to control the machines based on the analysis result. On the other hand, a fog computing node, which executes such real-time feedback control, should be capable of real-time data collection, management, and processing. To achieve these requirements, in this paper, we introduce wireless computing system (WCS) as a fog computing node. Since there are a lot of servers and each server has 60 GHz antennas to connect to other servers and sensors, WCS has high collecting and processing capabilities. However, in order to fulfilll a demand for real-time feedback control, WCS needs to satisfy an acceptable delay for data collection. In addition, lower power consumption is required in order to reduce the cost for the factory operation. Therefore, we propose an energy-effilcient and delay-aware WCS. Since there is a tradeoff relationship between the power consumption and the delay for data collection, our proposed system controls the sleep schedule and the number of links to minimize the power consumption while satisfying an acceptable delay constraint. Furthermore, the effectiveness of our proposed system is evaluated through extensive computer simulations.
Scientific journal, English - A Novel Network Design and Operation for Reducing Transmission Power in Cloud Radio Access Network with Power over Fiber
Yunseong Lee; Katsuya Suto; Hiroki Nishiyama; Nei Kato; Hirotaka Ujikawa; Ken-Ichi Suzuki
2015 IEEE/CIC INTERNATIONAL CONFERENCE ON COMMUNICATIONS IN CHINA (ICCC), IEEE, 1-5, 2015, Peer-reviwed, As the number of mobile users and the variety of contents increase, future access networks need to improve their capacity and latency. The concept of Cloud Radio Access Network (C-RAN), which densely deploys a large number of Remote Radio Heads (RRHs), presents a solution to guarantee such communication quality. However, the network still suffers cost issues related to power line supply to a large number of RRHs. Therefore, in this paper, we describe our envisioned C-RAN based on Passive Optical Network (PON) exploiting Power over Fiber (PoF), which is able to provide communication services without external power supply for RRHs. We also describe the conventional network design and operation schemes. Then, power-effective network design and operation approaches to equalize the transmission power of all Optical Line Terminals (OLTs) in the assumed network are presented. Our proposed power-effective network design demonstrates how to deploy the RRHs. Also, based on the proposed design approach, we present a joint control algorithm of the sleep schedule of RRHs and the transmission power of OLTs by considering the distribution of users. Furthermore, the effectiveness of our proposed approach is evaluated through numerical calculation.
International conference proceedings, English - An Overlay-based Data Mining Architecture Tolerant to Physical Network Disruptions
Katsuya Suto; Hiroki Nishiyama; Nei Kato; Kimihiro Mizutani; Osamu Akashi; Atsushi Takahara
IEEE Transactions on Emerging Topics in Computing, IEEE, 2, 3, 292-301, Oct. 2014, Peer-reviwed
Scientific journal, English - Toward Integrating Overlay and Physical Networks for Robust Parallel Processing Architecture
Katsuya Suto; Hiroki Nishiyama; Nei Kato; Takayuki Nakachi; Tatsuya Fujii; Atsushi Takahara
IEEE NETWORK, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 28, 4, 40-45, Jul. 2014, Peer-reviwed, Recently, much research attention is being paid toward the wide-area parallel processing architectures whereby all the network devices in the entire network execute the processing function in order to shorten the completion time of big data mining tasks. Despite some advancement, such architectures still suffer from physical network failures, which lead to critical service unavailability. As a remedy to this problem, an overlay-based parallel processing architecture, where nodes manage each other by employing the overlay network, can achieve higher service availability against small-scale failures. However, the overlay-based parallel processing architecture is not capable of providing data mining services in case large-scale network failures disrupt the overlay network. To deal with this issue, our article introduces a design methodology of an overlay-based parallel processing architecture based on integration of overlay and physical networks. Additionally, we introduce basic principles based on the design methodology. Through numerical calculation, we evaluate the effectiveness of an integration approach on the performance of parallel data processing in terms of higher service availability against physical network failures while minimizing traffic load.
Scientific journal, English - An Energy Efficient Upload Transmission Method in Storage-Embedded Wireless Mesh Networks
Shintaro Arai; Katsuya Suto; Hiroki Nishiyama
IEEE International Conference on Communications, 2785-2790, Jun. 2014, Peer-reviwed
International conference proceedings, English - An Overlay Network Construction Technique for Minimizing the Impact of Physical Network Disruption in Cloud Storage Systems
Katsuya Suto; Hiroki Nistiyama; Nei Kato; Takayuki Nakachi; Tatsuya Fujii; Atsusti Takahara
2014 INTERNATIONAL CONFERENCE ON COMPUTING, NETWORKING AND COMMUNICATIONS (ICNC), IEEE, 68-72, 2014, Peer-reviwed, Cloud storage exploiting overlay networks is considered to be a scalable and autonomous architecture. While this technology can ensure the security of storage service, it requires addressing the "server breakdown" problem, which may arise due to malicious attacks on servers and mechanical troubles of servers. In existing literature, an overlay network based on bimodal degree distribution was proposed to achieve high connectivity to combat these two types of server breakdown. However, it cannot ensure the high connectivity against physical network disruption that removes numerous nodes from overlay network. To deal with this issue, in this paper, we propose a physical network aware overlay network, in which the neighboring nodes are connected with one another in the overlay. Moreover, the numerical analysis indicates that the proposed system considerably outperforms the conventional system in terms of service availability.
International conference proceedings, English - Context-aware Task Allocation for Fast Parallel Big Data Processing in Optical-Wireless Networks
Katsuya Suto; Hiroki Nishiyama; Nei Kato
2014 INTERNATIONAL WIRELESS COMMUNICATIONS AND MOBILE COMPUTING CONFERENCE (IWCMC), IEEE, 423-428, 2014, Peer-reviwed, MapReduce architecture has been considered as one of the most promising candidates for efficient and reliable big data mining. While current MapReduce is basically designed for data center and enterprise networks, in which a number of servers are interconnected with optical fiber cables, prospective MapReduce would be applied in optical-wireless environment such as optical-wireless data center network, fiber-wireless (FiWi) access network, and so forth. To modify MapReduce for optical-wireless hybrid network, we need to answer the fundamental research problem, "How does MapReduce architecture use optical and wireless resources for task allocation?" To answer this question, this paper reveals some challenging issues and proposes a context-aware task allocation scheme that is designed by considering characteristics of both optical and wireless communications. Our proposed task allocation scheme can minimize the completion time of big data processing. Numerical results are presented to demonstrate the effectiveness of our proposed method compared with existing task allocation schemes.
International conference proceedings, English - THUP: A P2P Network Robust to Churn and DoS Attack Based on Bimodal Degree Distribution
Katsuya Suto; Hiroki Nishiyama; Nei Kato; Takayuki Nakachi; Tatsuya Fujii; Atsushi Takahara
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 31, 9, 247-256, Sep. 2013, Peer-reviwed, Hierarchical unstructured peer-to-peer (P2P) networks for file sharing systems such as Gnutella and Kazaa have made a tremendous achievement in the last decade. However, while these P2P networks can be tolerant to churn, i.e., the dynamics of peer participation and departure (or fault), there still remains the issue of vulnerability to Denial of Service (DoS) attacks, i.e., when the highest degree peers are removed. In order to overcome this shortcoming, we focus on a bimodal degree distribution, which is tolerant to both churn and DoS attacks. However, the network topology affects the network stability that was not taken into considered in the previous works. Therefore, we analyze the optimal network topology for DoS attack tolerance, and accordingly develop the peer joining procedure to construct and maintain the proposed network topology. Our proposed scheme is dubbed THUP (churn/DoS Tolerant, Hierarchical, Unstructured, P2P network). Performance evaluation conducted through computer simulations shows that THUP substantially improves the stability and communication efficiency compared with other existing P2P networking structures.
Scientific journal, English - An Efficient Data Transfer Method for Distributed Storage System over Satellite Networks
Katsuya Suto; Panu Avakul; Hiroki Nishiyama; Nei Kato
2013 IEEE 77TH VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING), IEEE, 1-5, 2013, Peer-reviwed, We study a novel distributed storage system integrated Data Centers (DCs) and satellite networks. This integrated system is expected as distributed storage system that can keep the storage service even if disasters strike because satellite is tolerant to link disruption caused by disasters. In this paper, we focus on data distribution method in the integrated system, and assume an erasure coding and a simple replication as data distribution method. We evaluate the storage volume and transmission time on each method which are required to restore lost data when some DCs are damaged by disasters. The storage volume of the erasure coding becomes lower than that of the replication while the transmission time becomes higher. A data transfer method is proposed in this paper to shorten the transmission time of the erasure coding. The proposed method can reduce the transmission volume on downlink communication by using network coding technologies. The numerical results show that the proposed method can restore the lost data in less time.
International conference proceedings, English - Designing P2P Networks Tolerant to Attacks and Faults based on Bimodal Degree Distribution
Katsuya Suto; Hiroki Nishiyama; Sherman Shen; Nei Kato
Journal of Communications, Academy Publisher, 7, 8, 587-595, Aug. 2012, Peer-reviwed
Scientific journal, English - A Method to Construct an Attack and Fault Tolerant Scalable Distributed Network
Katsuya Suto; Hiroki Nishiyama; Hideaki Yoshino; Keisuke Ishibashi; Nei Kato
International Conference on Communications, Mobility, and Computing, 1-5, May 2012, Peer-reviwed
International conference proceedings, English
MISC
- 深層学習による電波環境可視化技術〜B5G時代の自動運転、ドローンの通信信頼性〜
須藤克弥
Dec. 2023, 車載テクノロジー, 11, 3, 49-64, Invited, Introduction commerce magazine - Visualization Techniques for Radio Environments
Koya Sato; Takeo Fujii; Katsuya Suto
Institute of Electronics, Information and Communication Engineers, 01 Dec. 2021, The Journal of Institute of Electronics, Information and Communication Engineers, 104, 12, 1234-1238, Japanese, Peer-reviwed, Introduction scientific journal - デジタルツインを支える新たな無線通信システム
須藤克弥
電波技術協会, Jul. 2021, 電波技術協会会報 FORN, 2021-7, 341, 22-25, Japanese, Invited, Introduction research institution - BS-3-58 Resource-Efficient Data Placement for MapReduce in Wireless Data Center Networks(BS-3. Advanced Technologies in the Design, Management and Control for Future Innovative Communication Network)
Suto Katsuya; Nishiyama Hiroki; Kato Nei
The Institute of Electronics, Information and Communication Engineers, 24 Feb. 2015, Proceedings of the IEICE General Conference, 2015, 2, "S-118"-"S-119", English, 110009928733, AN10471452 - An Efficient Data Transfer Scheme for Wide Area Distributed Storage Systems
Suto Katsuya; Nishiyama Hiroki; Kato Nei
The Institute of Electronics, Information and Communication Engineers, 03 Sep. 2013, Proceedings of the Society Conference of IEICE, 2013, 1, 297-297, Japanese, 110009729451, AN10489017 - B-6-44 Basic Experiment of iSCSI Communication in Virtualized Storage
Suto Katsuya; Nishiyama Hiroki; Kato Nei; Nakachi Takayuki; Fujii Tatsuya; Takahara Atsushi
The Institute of Electronics, Information and Communication Engineers, 05 Mar. 2013, Proceedings of the IEICE General Conference, 2013, 2, 44-44, Japanese, 110009760968, AN10471452 - A Study on Distributed Storage System with Erasure Coding over Satellite Networks
SUTO Katsuya; NISHIYAMA Hiroki; KATO Nei
High-speed communication becomes possible among distant locations by the rapid growth of broad-band networks. A cloud storage service, which stores date in Data Centers (DCs) and provides Storage as a Service (SaaS), becomes the medium of choice in recent years. On the other hand, satellite networks have attracted much attention as a type of network that is tolerant to link disruptions caused by disaster. In order to realize a cloud storage that is tolerant to disasters, we study a novel distributed storage system integrated satellite networks. This integrated system achieves high confidentiality and robustness to distribute data by using an erasure coding. In this paper, we evaluate the impact of the erasure coding on the communication performance of the integrated storage system. Additionally, we propose a method to reduce the transmission time for the restoration of lost data in the integrated storage system with erasure coding and also verify the efficacy of the proposed method., The Institute of Electronics, Information and Communication Engineers, 17 Oct. 2012, Technical report of IEICE. SAT, 112, 255, 131-135, English, 0913-5685, 110009636517, AN10012987 - A Study on a Hierarchical P2P Network Topology Robust to Attack and Node Departure
SUTO Katsuya; NISHIYAMA Hiroki; KATO Nei; NAKACHI Takayuki; FUJII Tatsuya; TAKAHARA Atsushi
In P2P (peer-to-peer) networks, where nodes can freely participate in the network and depart from the network, it is necessary to realize a network robust to node departure. Hierarchical P2P networks such as Gnutella and Kazaa employ a two-tire structure by classifying nodes into higher-layer and lower-layer ones, and they can be tolerant to node from lower-layer departures because higher-layer nodes improve network connectivity. However, they are vulnerable to attacks targeting higher-layer nodes because the removal of high degree nodes dramatically degrade the network connectivity rather than the departure of low degree nodes. To cope with this issue, a bimodal degree distribution, which is tolerant to both attacks and node departures, have been studied. However, a network topology configuration following the bimodal degree distribution is not taken into account in the previous works. Therefore, in this paper, we study an optimal network topology for attacks and departures tolerance., The Institute of Electronics, Information and Communication Engineers, 04 Oct. 2012, IEICE technical report, 112, 231, 19-24, Japanese, 0913-5685, 110009636343, AA11546431
Lectures, oral presentations, etc.
- [招待講演]自動運転を支える意味を伝える映像伝送技術
須藤克弥
IEEE Japan Council Engineer Spotlight, Invited
Sep. 2024 - [パネルセッション]深化・学際化する無線分野における人材育成のあり方
須藤克弥
第５回電波利活用強靭化に向けた電波COEシンポジウム, Invited
Jun. 2024 - 自立型制御UAVに向けたマルチエージェント強化学習による配置方法ついて
中里仁; Gia Khanh Tran; 須藤克弥
電子情報通信学会RCS研究会
May 2024 - 電波伝搬グラフ表現学習のマルチホップパス表現での実装
高木志門; 須藤克弥
電子情報通信学会SR研究会
May 2024 - 過学習抑制のための情報源・通信路深層結合符号を用いた分散型学習
松村一冴; 須藤克弥
電子情報通信学会SR研究会
May 2024 - 空間相関を有する大規模通信路知識マップの低演算量シミュレーション法
佐藤光哉; 須藤克弥
電子情報通信学会SR研究会
May 2024 - UAVミリ波通信における時間選択性フェージングを考慮した情報源・通信路深層結合符号に関する一考察
山田準一郎; 須藤克弥
Oral presentation, 電子情報通信学会総合大会
Mar. 2024
04 Mar. 2024- 08 Mar. 2024 - ミリ波V2I通信における擬似LiDARを利用した遮蔽予測モデル
坂内信允; 須藤克弥
Oral presentation, 電子情報通信学会総合大会
Mar. 2024
04 Mar. 2024- 08 Mar. 2024 - 情報源・通信路深層結合符号におけるモデル伝送に関する一考察
須藤克弥; 松村一冴; 山田準一郎
Oral presentation, 電子情報通信学会SR研究会
Nov. 2023
09 Nov. 2023- 10 Nov. 2023 - Deep Joint Source Channel Codingにおける視覚的秘匿性を向上するためのモデル共有・学習方式
付昱洋; 須藤克弥
Oral presentation, 電子情報通信学会SR研究会
Nov. 2023
09 Nov. 2023- 10 Nov. 2023 - ミリ波V2X通信におけるステレオビジョンによる高速な遮蔽予測
坂内信允; 須藤克弥
Oral presentation, 電子情報通信学会SR研究会
Nov. 2023
09 Nov. 2023- 10 Nov. 2023 - 空間相関を有するライスフェージングチャネルにおけるIRS-Assisted SWIPTの性能解析
三浦優明; 須藤克弥
Poster presentation, MIKA2023
Oct. 2023
10 Oct. 2023- 12 Oct. 2023 - ミリ波V2X通信におけるステレオカメラを用いた遮蔽予測
坂内信允; 須藤克弥
Poster presentation, MIKA2023
Oct. 2023
10 Oct. 2023- 12 Oct. 2023 - 電波伝搬グラフ表現学習におけるフレネルゾーンを用いたパス構築
高木志門; 坂内信允; 須藤克弥
Poster presentation, MIKA2023
Oct. 2023
10 Oct. 2023- 12 Oct. 2023 - Deep Learning and Its Applications to Radio Map Construction (Keynote)
Katsuya Suto
Invited oral presentation, The 5th ASEAN – UEC Workshop on Informatics and Engineering, Invited
10 Sep. 2023
10 Sep. 2023- 10 Sep. 2023 - 電波伝搬グラフ表現学習
須藤克弥; 坂内信允; 佐藤光哉; 藤井威生
Oral presentation, 電子情報通信学会SR研究会
Jul. 2023
12 Jul. 2023- 14 Jul. 2023 - ヌル化を用いた情報信号のパス分離によるセキュアなSWIPT
藤井和貴; 須藤克弥
Oral presentation, 電子情報通信学会SR研究会
May 2023
11 May 2023- 12 May 2023 - 圧縮率可変なDeep Joint Source Channel Coding
山田準一郎; 須藤克弥
Oral presentation, 電子情報通信学会SR研究会
May 2023
11 May 2023- 12 May 2023 - 超解像を活用したWebRTCにおける軽量深層学習モデルに関する検討
美濃夏貴; 須藤克弥
電子情報通信学会NS研究会
Mar. 2023 - ドローンを用いた電波観測による3次元空間補間性能の実験的評価
Oral presentation, 電子情報通信学会SR研究会
Nov. 2022 - Evaluation of Object Detection AI in Pseudo-Analog Communications
Junichiro Yamada; Katsuya Suto
Oral presentation, Japanese, IEICE SR
06 Jul. 2022 - IRS placement method for improving radio environment spaces shielded by structures
Kazuki Fujii; Katsuya Suto
Oral presentation, Japanese, IEICE SR
06 Jul. 2022 - 低SNR信号を含む電波環境における距離減衰モデルに関する研究
坂内信允; 須藤克弥
Oral presentation, Japanese, 電子情報通信学会SR研究会, Domestic conference
04 Mar. 2022 - Deep Learning and Its Applications to Radio Map Construction (Tutorial)
Katsuya Suto
Public discourse, English, The 4th International Conference on Artificial IntelligenceinInformation and Communication, International conference
21 Feb. 2022 - 電波伝搬推定における深層学習の基礎と応用
須藤克弥
Public discourse, Japanese, PIF・PN研究会共催チュートリアル講演会, Invited, Domestic conference
18 Feb. 2022 - How We Recognize Radio Environment with Deep Learning (Tutorial)
Katsuya Suto
Public discourse, English, IEICE SmartCom Virtual Workshop, Invited, International conference
26 Jan. 2022 - 疑似アナログ通信方式を用いた路側映像ブロードキャスト
山田準一郎; 須藤克弥
Oral presentation, Japanese, 電子情報通信学会SR研究会, Domestic conference
25 Jan. 2022 - A video Streaming with Base Station Intervention for Remote Monitoring System
Kohei Kato; Katsuya Suto
Oral presentation, Japanese, IEICE Society Conference, Domestic conference
15 Sep. 2021 - On Time Slot Allocation Method with Statistical Channel State Information for Wireless Powered Sensor Networks
Takeru Terauchi; Katsuya Suto; Masashi Wakaiki
Oral presentation, Japanese, IEICE Technical Committee on Smart Radio, Domestic conference
16 Jul. 2021 - 3次元地図から電波マップを構築する深層生成モデル技術
須藤克弥
Nominated symposium, Japanese, 「将来無線のレイヤレスデザインとその応用」研究会, Invited, Domestic conference
22 Feb. 2021 - 3次元地図を用いた深層生成モデルによる電波マップ構築手法
坂内信允; 須藤克弥
Oral presentation, Japanese, 電子情報通信学会SR研究会, Domestic conference
19 Nov. 2020 - On Received Power Prediction with Deep Generative Model
Shinsuke Bannai; Katsuya Suto
Oral presentation, Japanese, 電子情報通信学会通信ソサイエティ大会, Domestic conference
18 Sep. 2020 - On Convolutional Neural Network-based Spatial Interpolation In Radio Environment Map
Riku Hashimoto; Katsuya Suto
Oral presentation, Japanese, IEICE General Conference
18 Mar. 2020 - Crowdsensing-based Spectrum Database for IoT with Intelligence
Oral presentation, English, Northeast Asia Symposium on IoT with Intelligence 2019
18 Sep. 2019 - Q-Leaning based Cell Zooming for Energy-Harvesting Small Cell Networks
Katsuya Suto; Masashi Wakaiki
Oral presentation, English, IEICE Smartcom 2018, International conference
30 Oct. 2018 - Resource Efficiency in Mobile Edge Computing: Cross-Acceleration Study of Particle Swarm Optimization
Tiago Gama Rodrigues; Katsuya Suto; Hiroki Nishiyama; Nei Kato; Katsuhiro Temma
Oral presentation, English, 電子情報通信学会総合大会, Domestic conference
Mar. 2018 - Parameter Analysis for the Application of Particle Swarm Optimization to the Multiple Cloudlets Edge Cloud Computing Problem
Tiago Gama Rodrigues; Katsuya Suto; Hiroki Nishiyama; Nei Kato
Oral presentation, English, 電子情報通信学会ソサイエティ大会, Domestic conference
Sep. 2017 - 災害時の通信インフラ復旧の在り方を変えるリジリエントなネットワーク技術の実現に向けて
西山大樹; 須藤克弥; 山田直人
Keynote oral presentation, Japanese, 電子情報通信学会ソサイエティ大会, Domestic conference
Sep. 2015 - 無線データセンタにおける規模と耐障害性の関係の評価
齋藤悠; 須藤克弥; 西山大樹; 加藤寧
Oral presentation, Japanese, 電気関係学会東北支部連合大会, Domestic conference
Aug. 2015 - Resource-Efficient Data Placement for MapReduce in Wireless Data Center Networks
Katsuya Suto; Hiroki Nishiyama; Nei Kato
Oral presentation, English, 電子情報通信学会総合大会, Domestic conference
Mar. 2015 - 広域分散ストレージシステムにおける効率的データ転送方式
須藤克弥; 西山大樹; 加藤寧
Oral presentation, Japanese, 電子情報通信学会ソサイエティ大会, Domestic conference
Sep. 2013 - 仮想ストレージにおけるiSCSI通信の基礎実験
須藤克弥; 西山大樹; 加藤寧; 仲地孝之; 藤井竜也; 高原厚
Oral presentation, Japanese, 電子情報通信学会 総合大会, Domestic conference
Mar. 2013 - 攻撃・離脱に強い階層型P2Pネットワークトポロジに関する一考察
須藤克弥; 西山大樹; 加藤寧; 仲地孝之; 藤井竜也; 高原厚
Oral presentation, English, 電子情報通信学会NS研究会, Domestic conference
Oct. 2012 - A Study on Distributed Storage System with Erasure Coding over Satellite Networks
Katsuya Suto; Hiroki Nishiyama; Nei Kato
Oral presentation, English, IEICE/KOSST JC-SAT, International conference
Oct. 2012
Courses
Research Themes
- 知的反射板を活用した情報・電力同時伝送システム
須藤 克弥; 佐藤 光哉
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), The University of Electro-Communications, Grant-in-Aid for Scientific Research (B), 22H03578
01 Apr. 2022 - 31 Mar. 2027 - 通信・センシング・学習の融合によるレジリエントサイバー空間生成基盤
JST, ASPIRE, Principal investigator, JPMJAP2346
Feb. 2024 - Mar. 2027 - QoE-based Communication Optimization for Stable Telexistence
ＫＤＤＩ 財団, 研究助成
01 Apr. 2020 - 31 Mar. 2023 - ユーザ参加型センシングを用いた体感品質学習による知的異種無線統合システム
Katsuya Suto
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists, The University of Electro-Communications, Grant-in-Aid for Early-Career Scientists, This research project aims to develop heterogenous wireless network control methodology that can provides stable QoE for 4K/8K video streaming and video analysis AI services. Specifically, we propose novel video streaming and multipath communication methods that make a decision by using communication quality bigdata., 19K20255
01 Apr. 2019 - 31 Mar. 2022 - 学習に基づく多次元無線環境認識によるスマートスペクトラム
梅林 健太; 藤井 威生; 太田 真衣; 須藤 克弥
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), Tokyo University of Agriculture and Technology, Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), スマート社会の実現には、周波数資源を柔軟かつダイナミックに共用して活用する周波数資源管理法が必要となる。高効率な周波数共用には、周波数利用の詳細な把握が必要であるが、現在の観測及びモデリング技術ではその精度が不足しており、把握が困難とされている。本研究課題では、各端末での周波数利用観測結果に対し、パラメトリックとノンパラメトリック型学習法を連携させることで多次元の無線物理量(受信電力、周波数利用率等)及び通信品質メトリック(パケットエラーレート、スループット等)を効率的に認識する手法を確立する。加えて、観測及び認識で得た情報を基に、適切な周波数資源管理法と、高効率な無線通信ネットワークの運用(スペクトラム活用法)の検討に取り組む。このために3つの課題(課題１：スペクトラム利用の認識法の確立、課題２：効率的な周波数資源管理及び活用法の確 立、課題３：複数周波数共用シナリオにおける実証実験)を設定した。 2021年度も引き続きコロナの影響もあり、海外の共同研究パートナー(オウル大学 フィンランド)を含め、研究活動が大幅に制限されており、人的交流も実現することが出来なかった。しかしながら、2022年度まで研究期間を延長し、2022年度における人的交流と実質的な共同研究を実現するためにzoom等による研究の打ち合わせを積み重ねてきた。オウル大学との共同研究をより実施的なものとするために、コロナの状況において各研究機関で可能な実験（観測実験）や、観測技術の高度化、そして観測からモデル化に基づいた周波数利用の把握とそれに基づいた周波数共用の検討を行ってきた。, 18KK0109
09 Oct. 2018 - 21 Mar. 2022 - Resilient communication technology in changing environment
Apr. 2016 - Mar. 2018 - Basic theory for resilient IoT engineering
Apr. 2016 - Mar. 2018 - Toward next generation network: Physical-virtual networks orchestration
須藤 克弥
日本学術振興会, 科学研究費助成事業 特別研究員奨励費, 東北大学, 特別研究員奨励費, 近年，物理ネットワークと仮想ネットワークの融合体が，新世代のネットワークアーキテクチャとして世界的な注目を集めている．物理・仮想統合ネットワークでは，物理ネットワークの性能や状態が仮想ネットワークの性能に影響を与えるため，物理ネットワークの特徴を考慮した仮想ネットワーク構築技術の実現が求められている．そこで本研究では，物理ネットワークと仮想ネットワークを高度に融合するための新しいメカニズムを考案し，ネットワーク上で提供するサービスの通信要求（リアルタイム性やロバスト性，機密性）に柔軟かつ動的に対応するネットワークアーキテクチャの開発を目指している． 本年度は，初年度に構築した通信性能評価モデルをベースとして物理・仮想統合ネットワークの複合最適化技術を確立することに取り組んだ．将来の情報通信ネットワークにおいて主要トラヒックになることが予想されるビッグデータマイニングサービスの課題とされているサービスの信頼性と通信の効率性の向上を目指した．ビッグデータマイニングサービスの通信が主に行われるデータセンタネットワークを物理ネットワークとして想定し，サービスの性能を評価した．性能評価モデルを基に仮想と物理ネットワークの両方のトポロジを複合最適化する技術を提案し，サービスの信頼性と通信の効率性を著しく向上することが可能であることを検証した．さらに，有線で接続されたデータセンタネットワークの障害に対する信頼性低下の問題に着目し，この問題を解決する新たなアーキテクチャとして無線データセンタネットワークを提案した．無線データセンタネットワークにおいても，ビッグデータマイニングサービスの性能を評価するとともに，信頼性と効率性を最適化する仮想・物理ネットワークのトポロジを導出した．, 14J03005
Apr. 2014 - Mar. 2016 - Distributed storage system robust to cyber-terrorism
SCAT, Research Scholarship
Apr. 2013 - Mar. 2014
Industrial Property Rights
Academic Contribution Activities
- Guest Editor, IEEE Wireless Communications Special Issue on Digital Twins and Pervasive Intelligence Synergy in 6G and Beyond
Others, Planning etc, Apr. 2024 - Present - TPC Co-Chair, Workshop on Ubiquitous Network Intelligence for Next Generation Wireless Networks, IEEE Global Communications Conference (GLOBECOM)
Academic society etc, Planning etc, Jan. 2024 - Present - Guest Editor, IEEE Journal on Miniaturization for Air and Space Systems Special Issue on Network Intelligence for Unmanned Aerial Vehicles
Others, Planning etc, Jan. 2024 - Present - Guest Editor, MDPI Sensors Special Issue on RF Energy Harvesting and Wireless Power Transfer for IoT
Others, Planning etc, 16 Aug. 2022 - Present - Publicity Co-chair, IEEE INFOCOM workshop on pervasive network intelligence for 6G networks
Academic society etc, Planning etc, Jan. 2022 - Present - TPC member, IEEE CCNC
Academic society etc, Planning etc, Sep. 2021 - Present - TPC member, IEEE ICC
Academic society etc, Planning etc, Mar. 2017 - Present - TPC member, IEEE GLOBECOM
Academic society etc, Planning etc, Mar. 2016 - Present - TPC member, IEEE VTC
Academic society etc, Planning etc, Mar. 2016 - Present - Guest Editor, IEEE Transactions on Vehicular Technology Special Issue on Cybertwin-driven 6G for V2X Applications
Others, Planning etc, 13 Jan. 2021 - Guest Editor, Springer Peer-to-Peer Networking and Applications, SI: Space-Air-Ground Integrated Networks for Future IoT
Others, Planning etc, Jun. 2020 - Guest Editor, IEEE Transactions on Cognitive Communications and Networking, SI: Intelligent Mobile Edge Computing Systems: Challenges and Solutions
Others, Planning etc, 20 Jul. 2019 - Guest Editor, International Journal of Distributed Sensor Networks, SI: Space Information Networks: Architectures, Technologies, and Applications
Others, Planning etc, 20 Oct. 2017 - 01 Apr. 2018 - Guest Editor, International Journal of Distributed Sensor Networks, SI: Sustainable Cognitive Radio Sensor Networks
Others, Planning etc, 24 Apr. 2017 - 01 Oct. 2017
