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Improvement of indoor localization accuracy by Wi-Fi radio waves using neural network

Research Project

Project/Area Number 21K04065
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionUniversity of Hyogo

Principal Investigator

Aikawa Satoru  兵庫県立大学, 工学研究科, 教授 (80448761)

Co-Investigator(Kenkyū-buntansha) 山本 真一郎  兵庫県立大学, 工学研究科, 准教授 (10514391)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords位置推定 / Wi-Fi / Fingerprint / ナビゲーション / 無線LAN / 無線LAN
Outline of Research at the Start

無線LANアクセスポイントからの受信強度による位置推定を機械学習により高精度化する。次の4つの視点で研究する。
①離散的空間:2次元地図上でCNN,ResNetにより精度向上を図る。
②連続的空間:回帰問題として扱い,連続的な位置の推定を行う。
③微視的時間:RNN,LSTMにより過去のユーザデータ,移動経路を用いて精度向上を図る。
④巨視的時間:環境変化する受信強度の混合正規分布利用して精度向上を図る。

Outline of Final Research Achievements

We are conducting research on location estimation based on received strength from wireless LAN access points using machine learning and other techniques. We have studied methods to reduce the cost of acquiring training data for simple location estimation, to perform measurements in different environments, to selectively use users' measurement data to cope with environmental changes, and to expand the acquired data when the amount of data is insufficient, while we have also studied methods to reduce the cost of acquiring training data in the case of simple location estimation. On the other hand, we proposed a method to estimate the influence of obstacles such as walls and to obtain an accurate distance by using both the propagation time and signal strength in a position estimation method based on signal propagation time, which has recently become a standard and commercially available method for wireless LANs.

Academic Significance and Societal Importance of the Research Achievements

無線LANアクセスポイント(AP)を利用し,新たなハードウェアの設置なしに,事前測定のみで行う位置推定を用いた様々なサービス実現を目的とする。ユーザはスマートフォンにアプリケーションをインストールするだけで提供サービスを受けることができる。本研究では機械学習および無線伝搬環境を考慮して,位置推定の高精度化,簡易化を図る。研究は開発したアプリケーションをスマートフォンにインストールして実験的に行い,得られたデータは機械学習解析ツールを用いて解析する。

Report

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

    (33 results)

All 2024 2023 2022 2021

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 9 results) Presentation (24 results) (of which Int'l Joint Research: 7 results,  Invited: 1 results)

  • [Journal Article] Correction of round-trip time and selection of access points for estimating Wireless LAN locations by multilateration2024

    • Author(s)
      Yusuke Shida, Satoru Aikawa, Shinichiro Yamamoto
    • Journal Title

      IEICE Communications Express

      Volume: 13

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fingerprint localization scheme with correction for missing values in training data and data augmentation2024

    • Author(s)
      Togo Shinomiya, Satoru Aikawa, Shinichiro Yamamoto
    • Journal Title

      IEICE Communications Express

      Volume: 13

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Machine learning-based area estimation using data measured under walking conditions2024

    • Author(s)
      Shota Nakayama, Satoru Aikawa, Shinichiro Yamamoto
    • Journal Title

      IEICE Communications Express

      Volume: 13

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fingerprint localization using data from different radio environments2023

    • Author(s)
      Ozaki Ryoga、Aikawa Satoru、Yamamoto Shinichiro
    • Journal Title

      IEICE Communications Express

      Volume: 12 Issue: 10 Pages: 564-567

    • DOI

      10.23919/comex.2023XBT0005

    • ISSN
      2187-0136
    • Year and Date
      2023-10-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] User data selection method using received signal strength indicator for semi-supervised learning in fingerprint localization2023

    • Author(s)
      Konishi Yohei、Aikawa Satoru、Yamamoto Shinichiro
    • Journal Title

      IEICE Communications Express

      Volume: 12 Issue: 3 Pages: 66-71

    • DOI

      10.1587/comex.2022XBL0168

    • ISSN
      2187-0136
    • Year and Date
      2023-03-01
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental validation of the ResNet layer number design method for Wi-Fi location estimation in different environments2022

    • Author(s)
      Sakanishi Yu、Aikawa Satoru、Yamamoto Shinichiro
    • Journal Title

      IEICE Communications Express

      Volume: 11 Issue: 10 Pages: 673-678

    • DOI

      10.1587/comex.2022XBL0109

    • ISSN
      2187-0136
    • Year and Date
      2022-10-01
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effectiveness of simulation data on walking in Wi-Fi fingerprints using RNN2022

    • Author(s)
      Shoya Amada, Satoru Aikawa, Shin-ichiro Yamamoto
    • Journal Title

      IEICE COMEX

      Volume: ADVANCE ONLINE PUBLICATION Pages: 1-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Yohei Konishi, Satoru Aikawa, Shinichiro Yamamoto2022

    • Author(s)
      User Data Selection using CNN-Feature Extractor for Fingerprint Localization
    • Journal Title

      IEICE COMEX

      Volume: ADVANCE ONLINE PUBLICATION Pages: 1-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Coordinate rectification of Indoor Neural Network Localization Using Filters2022

    • Author(s)
      Kaishin Hori,Satoru Aikawa, Shinichiro Yamamoto, Yuta Sakai
    • Journal Title

      IEICE COMEX

      Volume: ADVANCE ONLINE PUBLICATION Pages: 1-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Correction RTT using RSSI for Wireless LAN location estimation2023

    • Author(s)
      Yusuke Shida, Satoru Aikawa, Shinichiro
    • Organizer
      IEICE ICETC2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A fingerprint localization scheme using data augmentation2023

    • Author(s)
      Togo Shinomiya, Satoru Aikawa, Shinichiro Yamamoto
    • Organizer
      IEICE ICETC2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 歩行状態で測定したデータを用いた機械学習によるエリア推定2023

    • Author(s)
      中山将太,相河聡,山本真一郎
    • Organizer
      電子情報通信学会コミュニケーションシステム研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 電波環境の異なるデータを用いたFingerprint位置推定2023

    • Author(s)
      尾﨑遼河,相河聡,山本真一郎
    • Organizer
      電子情報通信学会コミュニケーションシステム研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 無線LAN位置推定のためのRSSIを用いたRTTの補正2023

    • Author(s)
      志田勇介,相河聡,山本真一郎
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] データ拡張を利用したFinger Print位置推定2023

    • Author(s)
      四宮東吾,相河聡,山本真一郎
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A fingerprint localization using data from different radio environments2022

    • Author(s)
      Ryoga Ozaki, Satoru Aikawa, Shin-ichiro Yamamoto
    • Organizer
      IEICE Communication Society, 2022 International Conference on Emerging Technologies for Communications
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] CNN Area Estimation using data measured in walking conditions2022

    • Author(s)
      Shota Nakayama, Satoru Aikawa, Shinichiro Yamamoto
    • Organizer
      IEICE Communication Society, 2022 International Conference on Emerging Technologies for Communications
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fingerprint位置推定におけるCNNを特徴抽出器として用いたデータの選別手法2022

    • Author(s)
      小西楊平・相河 聡・山本真一郎
    • Organizer
      電子情報通信学会信学コミュニケーションシステム研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Fingerprint位置推定におけるWi-FiのAP数とCNN,ResNetの設計に関する検討2022

    • Author(s)
      坂西 優・相河 聡・山本真一郎
    • Organizer
      電子情報通信学会信学コミュニケーションシステム研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] 屋内位置推定におけるCNN推定手法への状態空間モデルの適用2022

    • Author(s)
      堀 開慎・相河 聡・山本真一郎
    • Organizer
      電子情報通信学会信学コミュニケーションシステム研究会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 歩行状態で測定したデータを用いたCNNエリア推定2022

    • Author(s)
      中山遼河,相河 聡,山本真一郎
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 電波環境の異なるデータを利用したFinger Print位置推定2022

    • Author(s)
      尾崎将太,相河 聡,山本真一郎
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2022 Research-status Report
  • [Presentation] User Data Selection using CNN Feature Extractor for Fingerprint Localization2021

    • Author(s)
      Yohei Konishi, Satoru Aikawa, ShinichiroYamamoto, Yuta Sakai
    • Organizer
      ICETC 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] An Experimental Study on Improving Accuracy of Location Estimation in Finger Print Using CNN and ResNet2021

    • Author(s)
      Yu Sakanishi, Satoru Aikawa, Shinichiro, Yamamoto, Yuta Sakai
    • Organizer
      ICETC 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Coordinate interpolation of Indoor Neural Network Localization by Particle Filter2021

    • Author(s)
      Kaishin Hori, Satoru Aikawa, Shinichiro Yamamoto, Yuta Sakai
    • Organizer
      ICETC 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 無線LANを電波を用いたNeural Networkによる二段階位置推定の実験的検討2021

    • Author(s)
      高島勇也・相河 聡・山本真一郎・阪井祐太
    • Organizer
      電子情報通信学会 コミュニケーションシステム研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] RNNを用いたWi-Fi Finger Printにおけるシミュレーション歩行データの有効性2021

    • Author(s)
      天田翔也・相河 聡・山本真一郎・阪井祐太
    • Organizer
      電子情報通信学会 コミュニケーションシステム研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] CNN, ResNetを用いたFinger Printにおける位置推定精度向上の実験的検討2021

    • Author(s)
      坂西 優・相河 聡・山本真一郎・阪井祐太
    • Organizer
      電子情報通信学会 コミュニケーションシステム研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] Fingerprint位置推定におけるCNNを特徴抽出器として用いたデータの選別手法2021

    • Author(s)
      小西楊平・相河 聡・山本真一郎・阪井祐太
    • Organizer
      電子情報通信学会 コミュニケーションシステム研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] 無線LAN屋内位置推定のParticle Filterを用いたCNNに対する座標補間の実験的検証2021

    • Author(s)
      堀 開慎・相河 聡・山本真一郎・阪井祐太
    • Organizer
      電子情報通信学会 コミュニケーションシステム研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] Neural Network による屋内位置推定の Android 端末への実装法2021

    • Author(s)
      堀 開慎,相河 聡,山本真一郎,阪井祐太
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Finger Print位置推定のNNモデル自動更新におけるデータ選別2021

    • Author(s)
      小西楊平,相河 聡,山本真一郎,阪井祐太
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2021 Research-status Report
  • [Presentation] ResNetを用いたFinger Print位置推定2021

    • Author(s)
      坂西 優,相河 聡,山本真一郎,阪井裕太
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2021 Research-status Report

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

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