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Development of wireless resources via multi-dimensional radio environment analysis with crowdsensing mobile terminals

Research Project

Project/Area Number 19K14988
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionThe University of Electro-Communications (2021)
Tokyo University of Science (2019-2020)

Principal Investigator

Sato Koya  電気通信大学, 人工知能先端研究センター, 助教 (60822533)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords無線通信 / 電波伝搬 / 周波数共用 / 空間統計 / 機械学習 / ビッグデータ / 車車間通信 / 最適化 / センシング
Outline of Research at the Start

数百億台もの無線端末が競合する次世代無線システムを対象に、一般ユーザの端末が観測した電波環境情報をクラウドに集約し、それらを空間・周波数・時間軸で解析することで高精度な電波環境推定を実現する技術の研究を行なう。スマートフォンや無線LANから取得した限られた帯域内における観測情報のみでも「任意の帯域で」「場所を選ばず」電波環境を推定でき、無線通信全体の効率向上に寄与する技術の確立を目指す。

Outline of Final Research Achievements

We established a multidimensional interpolation method based on big wireless data for received power characteristics. Specifically, the method was extended to joint spatial-frequency interpolation and generalized to any transmission locations, whereas the conventional method only supports spatial interpolation for a fixed base station and single frequency band. Next, a communication scheme utilizing big wireless data was proposed for vehicular communication systems. We showed that the big data-aided communication design improves communication efficiency. Finally, we proposed a fast and accurate data analysis method among terminals using decentralized federated learning as an advanced topic. It was shown that this method efficiently learns wireless channels.

Academic Significance and Societal Importance of the Research Achievements

無線システムの需要増大に伴い、新規システムへ割り当てる帯域の不足や既存システムの混雑といった問題が年々深刻化している。本研究を通して得られた成果により、限られた無線周波数資源の無駄のない活用の実現が期待される。例として、他者への干渉が小さく済みそうな帯域を積極利用し、かつ通信品質が不安定な箇所は避けることで安定かつ高速な通信を実現するといった使い方が挙げられる。スマートフォンやIoTセンサはもちろん、車車間通信のような信頼度が求められるシステムをサポートする基盤技術となるであろう。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2021 2020 2019 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] Rate-Adapted Decentralized Learning Over Wireless Networks2021

    • Author(s)
      Koya Sato and Daisuke Sugimura
    • Journal Title

      IEEE Transactions on Cognitive Communications and Networking

      Volume: - Issue: 4 Pages: 1412-1429

    • DOI

      10.1109/tccn.2021.3074908

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] On the Performance of Neural Network Residual Kriging in Radio Environment Mapping2019

    • Author(s)
      Koya Sato, Kei Inage, and Takeo Fujii
    • Journal Title

      IEEE Access

      Volume: 7 Pages: 94557-94568

    • DOI

      10.1109/access.2019.2928832

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 無線環境の可視化:空間統計学の基礎とその多次元拡張2021

    • Author(s)
      佐藤光哉
    • Organizer
      電子情報通信学会 信号処理研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 無線環境における送信レート適応化に基づく分散機械学習の高速化2021

    • Author(s)
      佐藤光哉, 杉村大輔
    • Organizer
      電子情報通信学会 無線通信システム研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Empirical CDF-based power control method for obstructed V2V communications2021

    • Author(s)
      Keita Katagiri, Koya Sato, and Takeo Fujii
    • Organizer
      IEICE ICETC2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Estimation of the Number of Obstacles Based on p-value for V2V Communications2021

    • Author(s)
      Keita Katagiri, Koya Sato, and Takeo Fujii
    • Organizer
      IEICE ICETC2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Deterministic Video Streaming with Deep Learning Enabled Base Station Intervention for Stable Remote Driving System2021

    • Author(s)
      Kohei Kato, Katsuya Suto, and Koya Sato
    • Organizer
      IEEE ICC 2021 Workshop on Time-sensitive and Deterministic Networking (TsDN)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] [パネル討論] 周波数共用におけるデータ駆動型電波伝搬推定の動向と課題2020

    • Author(s)
      佐藤光哉
    • Organizer
      電子情報通信学会スマート無線研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] 車車間通信のためのp値を用いた遮蔽車両台数推定法2020

    • Author(s)
      片桐啓太, 佐藤光哉, 藤井威生
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Network-Density-Controlled Decentralized Parallel Stochastic Gradient Descent in Wireless Systems2020

    • Author(s)
      Koya Sato, Yasuyuki Satoh, and Daisuke Sugimura
    • Organizer
      IEEE International Conference on Communications 2020 (IEEE ICC2020)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 電波マップの周波数-空間補間に関する検討2020

    • Author(s)
      佐藤光哉, 稲毛契, 藤井威生
    • Organizer
      電子通信学会総合大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Clustering of Signal Power Distribution Toward Low Storage Crowdsourced Spectrum Database2019

    • Author(s)
      Yoji Uesugi, Keita Katagiri, Koya Sato, Kei Inage, and Takeo Fujii
    • Organizer
      IEEE Vehicular Technology Conference (VTC) 2019-Fall Workshop on 5G and Beyond Technologies for Ultra-Dense Environments
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Remarks] (GitHub)Rate Adaptation Algorithm for DFL

    • URL

      https://github.com/ksatolab-uec/rate-adaptation_for_decentralized-fl_ieee-tccn2021

    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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