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Transfer learning for context recognition based on Wi-Fi channel state information

Research Project

Project/Area Number 21H03428
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 60060:Information network-related
Research InstitutionOsaka University

Principal Investigator

Maekawa Takuya  大阪大学, 大学院情報科学研究科, 准教授 (50447025)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2023: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2021: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
KeywordsWi-Fiセンシング / ユビキタスコンピューティング / コンテキスト推定 / Wi-Fiチャネル状態情報 / ワイヤレスセンシング / 行動認識 / WiFi電波 / Wi-Fi電波
Outline of Research at the Start

本研究では、Wi-Fi電波を用いたコンテキスト認識のための基盤技術研究を行う。提案する手法を用いて、人間の活動により変化する環境内の電波の伝搬情報を用いて認識を行う。本研究では特に、Wi-Fi電波を用いたコンテキスト認識モデルの運用性を高める転移学習技術の研究開発を行うことで、各環境で必要だった学習データ取得コストを百分の一程度まで大幅に低減し、異なるタスク間(行動認識や転倒検知といったタスク)での転移学習や学習データに含まれない行動の認識をも実現する。

Outline of Final Research Achievements

testIn this research, we studied environment-independent context recognition using Wi-Fi radio wave information. Specifically, we studied recognition and estimation methods for the following contexts that are important in mobile and ubiquitous computing. (1) Angle of Arrival (AoA) information of Wi-Fi radio waves: Estimating the angle of arrival of received radio waves by using Wi-Fi propagation information. (2) Physical distance between Wi-Fi receivers: Estimating the physical distance between Wi-Fi devices, such as smartphones using information on received radio waves from nearby Wi-Fi access points.

Academic Significance and Societal Importance of the Research Achievements

本研究では、Wi-Fiセンシング研究において環境依存性の低い技術に注力を置いて研究開発を行った。環境に依存しないWi-Fi受信情報の成分を極力利用して、上述するような様々な屋内コンテキストを推定する手法を開発し、今後の様々なコンテキスト依存応用に繋がる基盤的な技術を築いた。本研究を通じて、IEEE Sensors JournalやElsevier Pervasive and Mobile Computingに論文が採録されるなどの顕著な成果が得られた。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (12 results)

All 2023 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Automated construction of Wi-Fi-based indoor logical location predictor using crowd-sourced photos with Wi-Fi signal2023

    • Author(s)
      Teerawat Kumrai, Joseph Korpela, Yizhe Zhang, Kazuya Ohara, Tomoki Murakami, Hirantha Abeysekera, Takuya Maekawa
    • Journal Title

      Elsevier Pervasive and Mobile Computing (PMC)

      Volume: 89 Pages: 101742-101742

    • DOI

      10.1016/j.pmcj.2022.101742

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] IndoLabel: Predicting Indoor Location Class by Discovering Location-Specific Sensor Data Motifs2022

    • Author(s)
      Dissanayake Thilina、Maekawa Takuya、Hara Takahiro、Miyanishi Taiki、Kawanabe Motoaki
    • Journal Title

      IEEE Sensors Journal

      Volume: 22 Issue: 6 Pages: 5372-5385

    • DOI

      10.1109/jsen.2021.3102916

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] IoT on Animals: Using On-device Activity Recognition Techniques to Unveil the Secrets of Animal Behavior2023

    • Author(s)
      Takuya Maekawa
    • Organizer
      ACM MobiSys 2023, IoT Day
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Preliminary Investigation of Estimating Depth Images of Moving Objects from Wi-Fi Channel State Information2023

    • Author(s)
      Cao Guanyu, Maekawa Takuya, Ohara Kazuya, Kishino Yasue
    • Organizer
      情報処理学会 第79回ユビキタスコンピューティングシステム研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Preliminary Investigation of Estimating Distance between Devices via Wi-Fi Round Trip Time Using Positional Embedding of Access Points2022

    • Author(s)
      Yuqiao Wang, Takuya Maekawa, Kazuya Ohara, Yasue Kishino, Tomoki Murakami, and Hirantha Abeysekera
    • Organizer
      情報処理学会 第77回ユビキタスコンピューティングシステム研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Preliminary Investigation of Distance Estimation between Devices via Wi-Fi Round Trip Time2022

    • Author(s)
      Yuqiao Wang, Takuya Maekawa
    • Organizer
      情報処理学会 第76回ユビキタスコンピューティングシステム研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Acceleration-based Human Activity Recognition of Packaging Tasks Using Motif-guided Attention Networks2022

    • Author(s)
      Jaime Morales, Naoya Yoshimura, Qingxin Xia, Atsushi Wada, Yasuo Namioka, Takuya Maekawa
    • Organizer
      IEEE Int'l Conf. on Pervasive Computing and Communications (PerCom 2022)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Wi-Fi CSIを用いた行動認識のための強化学習を用いた環境非依存なサンプリングレート選択2022

    • Author(s)
      丹野 友華, 前川 卓也, 原 隆浩, 尾原 和也, 岸野 泰恵, 村上 友規, アベセカラ ヒランタ
    • Organizer
      情報処理学会 第73回ユビキタスコンピューティングシステム研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Wi-Fi CSI-Based Activity Recognition with Adaptive Sampling Rate Selection, Proc. of 18th EAI International Conference on Mobile and Ubiquitous Systems2021

    • Author(s)
      Yuka Tanno, Takuya Maekawa, Takahiro Hara
    • Organizer
      Computing, Networking and Services (MobiQuitous 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparative Analysis of High- and Low-Performing Factory Workers with Attention-Based Neural Networks2021

    • Author(s)
      Qingxin Xia, Atsushi Wada, Takanori Yoshii, Yasuo Namioka, Takuya Maekawa
    • Organizer
      18th EAI International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (MobiQuitous 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] WeakCounter: Acceleration-based Repetition Counting of Actions with Weakly Supervised Learning2021

    • Author(s)
      Yuuki Nishino, Takuya Maekawa, Takahiro Hara
    • Organizer
      International Symposium on Wearable Computers (ISWC 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 距離推定装置、距離推定方法及びプログラム2023

    • Inventor(s)
      前川卓也、尾原和也、岸野泰恵
    • Industrial Property Rights Holder
      前川卓也、尾原和也、岸野泰恵
    • Industrial Property Rights Type
      特許
    • Filing Date
      2023
    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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