研究者詳細 - 村瀬　勉

論文 - 村瀬　勉

分割表示 393 件中 101 - 120 件目／全件表示 >>

Centralized Route Control for Expanding Coverage by Wireless LAN With Many Vehicle Aps 査読有り国際誌

Ryota Miyazaki and Tutomu Murase

IEEE CCWC2020 ( 12－6 ) 2021年1月

Proposal of User Cooperative Mobility Control for Higher Throughput in Social Ad Hoc Networks With Dynamic Optimal Routing 査読有り国際誌

Takumi Anjiki and Tutomu Murase

IEEE CCWC2020 ( 12－3 ) 2021年1月

Performance Evaluation of Adaptive Beaconing for High-Speed Wireless LAN Communication With Running Vehicle APs 査読有り国際誌

Shoya Kobayashi and Tutomu Murase

IEEE CCWC2020 ( 12－1 ) 2021年1月

Prioritized Periodical Communication with Timing Reservation Multiple Access for Autonomous Distributed Mobile Sensor Networks 査読有り国際誌

Ryoma Nishiborri, Yukihiro Tadokoro and Tutomu Murase

IEEE CCNC 2021 2021年1月

A Server Migration Method Using Q-Learning with Dimension Reduction in Edge Computing 査読有り国際誌

Ryo Urimoto, Yukinobu Fukushima, Yuya Tarutani, Tutomu Murase, Tokumi Yokohira

ICOIN 2021 頁： 301 - 304 2021年1月

Potential games for improving throughput of social relay networks by multi-user cooperative mobility 査読有り

Xie, JQ; Murase, T

IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC 2021) 2021年

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE International Conference on Communications

With the large-scale mobile Internet promotion, people frequently use social applications, such as Facebook, Instagram, etc., making the social network a valuable research subject in Device-to-Device (D2D) communication. Maintaining high throughput and quality of service (QoS) are vital metrics worthy of exploration. This paper proposes a social-relay ad hoc network model based on multi-user cooperative mobility, consisting of two issues: relay selection scheme and multi- user cooperative mobility strategy. To ensure link stability in the relay selection scheme, we jointly consider social links' requirements and the probability of successful data transmission in the physical layer. Since the optimization problem is NP- hard, with game theory, we define two strategic games that include relay selection game (RSG) and multi-user mobility game (MMG), to obtain the optimal relay and the best mobility strategy for maximizing throughput. The numerical results show that the proposed potential-game approach yields 13.93%, 81.78%, and 240.83% throughput gain over the previous mid-point selection scheme, random relaying and mobility, and direct transmission, respectively.

DOI： 10.1109/ICC42927.2021.9500851

Web of Science

Scopus

Optimal User-Selection for User Cooperative Mobility Control in Ad Hoc Networks 査読有り

Anjiki, T; Murase, T

2021 IEEE 94TH VEHICULAR TECHNOLOGY CONFERENCE (VTC2021-FALL) 2021-September 巻 2021年

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Vehicular Technology Conference

In this paper, we propose and evaluate a user-selective mobility control method to improve communication performance in social ad hoc networks. In the network, the connected user depends on the relationship among users and the dynamic routing that optimizes the quality of service. The proposed method is a heuristic method that identifies the movable users and determines the user mobility direction regarding connection and location relationships. The three selected movable users are the user with a maximum number of connectable users, the user with a maximum number of connected users, and the farthest distance connected user. The direction of the user's mobility is the direction of the center of the region consisting of connectable users. The effectiveness of the proposed method is evaluated by comparing the throughput improvement and accuracy against throughput improvement at the optimal location. The calculated throughput improvement was 1.52 and the accuracy was 0.90 when the user with a maximum number of connectable users was moved by 20 meters. The throughput improvement was 1.15 and the accuracy was 0.83 when the user with a maximum number of connected users was moved by 15 meters. The throughput improvement was 1.22 and the accuracy was 0.75 when the farthest distance connected user was moved by 20 meters.

DOI： 10.1109/VTC2021-FALL52928.2021.9625073

Web of Science

Scopus

CiNii Research

User Cooperative Mobility for Higher QoS in Ad Hoc Network: Framework and Evaluation 招待有り査読有り

Murase, T

2021 17TH INTERNATIONAL CONFERENCE ON MOBILITY, SENSING AND NETWORKING (MSN 2021) 頁： 661 - 670 2021年

担当区分：筆頭著者,　最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings - 2021 17th International Conference on Mobility, Sensing and Networking, MSN 2021

This paper describes a framework and evaluation results for user cooperative mobility control in ad hoc networks and the research results already achieved. In order for ad hoc networks as extended D2D communications to be a good complement to 5G and Beyond 5G cellular networks, further improvements for ad hoc networks in communication performance are needed. User cooperative mobility control is a method that does not require any changes on existing protocols or devices but can improve the performance simply by moving users having ad hoc network node devices. However, in practical implementation, influenced by factors such as network architecture (WLAN, ad hoc network), topology (dynamic, static), mobility cost, etc., this paper presents an overall control framework to achieve higher QoS. Within this framework, the characteristics of user cooperative mobility control in different factors and scenarios are analyzed in detail. The results that have been achieved are shown. This work will contribute to the design and development of higher QoS for future mobile smart devices, particularly in the context of autonomous driving and AR/XR.

DOI： 10.1109/MSN53354.2021.00100

Web of Science

Scopus

A Study of User Cooperative Mobility for Social Ad-hoc Network with Dynamic Optimal Routing 査読有り国際誌

Takumi Anjiki and Tutomu Murase

IEICE ICETC2020 ( L2-5 ) 2020年12月

Delay Evaluation for IEEE802.11ad in Intra-Vehicle Wireless Communication with Practical Simulation Parameter Settings from Real Measurement 査読有り国際誌

Takumi Shiohara and Tutomu Murase

IEICE ICETC2020 ( M2-1 ) 2020年12月

Closed-Form Expressions of Performance Metrics of V2X Safety Communication in Urban Scenarios 査読有り国際誌

Kai Takahashi, Yuto Konuma, Shigeo Shioda, Takeshi Hirai, Tutomu Murase,

IEEE VTC-Fall 2020 頁： 1 - 6 2020年11月

QoS Control for Mission-critical Communication on Vehicles with IEEE802.11 Wireless LAN under Dynamic Interference 査読有り国際誌

Takumi Shiohara and Tutomu Murase

2020 11th IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON) 頁： 917 - 922 2020年10月

IEEE 802.11ad Communication Quality Measurement in In-vehicle Wireless Communication with Real Machine 査読有り国際誌

Ryoko Nino, Takayuki Nishio and Tutomu Murase

2020 11th IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON) 頁： 700 - 706 2020年10月

Throughput Measurement of IEEE 802.11ad with Various Interferences on Vehicles, 査読有り

Tomonori Hirata and Tutomu Murase

IEEE ICCE-TW2020 2020年9月

Imaging by Spatially Distributed Massive Nanoscale Nodes with Hierarchical MAC Protocol 査読有り国際誌

S. Nishibori, Y. Tadokoro and T. Murase

2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC2020) 2020年9月

Multiple User Cooperative Mobility in Mobile Ad Hoc Networks: An Interaction Position Game 査読有り国際誌

Jiquan Xie, Tutomu Murase

IEEE Access 8 巻頁： 126297 - 126314 2020年7月

An Optimal Location Allocation by Multi-User Cooperative Mobility for Maximizing Throughput in MANETs 査読有り国際誌

J. Xie and T. Murase

IEEE Access 8 巻頁： 226089 - 226107 2020年7月

Performance Evaluation of NOMA for Sidelink Cellular-V2X Mode 4 in Driver Assistance System with Crash Warning 査読有り国際誌

Takeshi Hirai, Tutomu Murase

IEEE Access 8 巻頁： 168332 - 168332 2020年7月

Performance Evaluations of PC5-based Cellular-V2X Mode 4 for Feasibility Analysis of Driver Assistance Systems with Crash Warning 査読有り国際誌

Takeshi Hirai and Tutomu Murase

MDPI Sensors 20 巻 ( 10 ) 頁： 2950 - 2966 2020年5月

Virtualization in distributed hot and cold storage for IoT data retrieval without caching 査読有り

T. Ito, H. Noguchi, M. Kataoka, T. Isoda, T. Murase"

IEEE International Conference on Informatics, IoT, and Enabling Technologies (ICIoT'20) 頁： 00 2020年2月

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