無線通信網を用いた屋内向け測位方式  [in Japanese] Indoor Location Sensing Technique Using Wireless Network  [in Japanese]

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Author(s)

    • 北須賀 輝明 KITASUKA TERUAKI
    • 九州大学大学院システム情報科学研究院 Graduate School of Information Science and Electrical Engineering, Kyushu University
    • 中西 恒夫 NAKANISHI TSUNEO
    • 九州大学大学院システム情報科学研究院 Graduate School of Information Science and Electrical Engineering, Kyushu University
    • 福田 晃 FUKUDA AKIRA
    • 九州大学大学院システム情報科学研究院 Graduate School of Information Science and Electrical Engineering, Kyushu University

Abstract

来たるべきユビキタスコンピューティング社会の基盤として,測位技術は必要不可欠なものである.GPSなどの屋外向け測位技術は確立されているものの,屋内利用できる測位技術は建物に専用設備を設置するなど導入,維持ともに高コストなものしか存在しない.一方で,無線LANなどの無線通信網が急速に普及しており,無線LANを用いた測位技術も一部で研究されている.本稿では,あらゆる機器が無線通信網で相互接続されている環境において,低コストかつより高精度な測位を実現することを目的として,無線LANなどの無線通信網を用いた測位方式を提案する.無線を使った測位では精度低下が問題となる.本稿では複数の無線端末の測位を同時に行う方式による高精度化手法を提案する.提案方式をシミュレーションで評価し,端末間の距離測定誤差20%,基準局9台,無線端末数20台の場合で,従来方式と比較して40%の測位精度の向上がみられた.Location sensing technology is very important for the infrastracture of ubiquitous computing environment. Outdoor location sensing technology such as GPS is already developed and widely used. For indoor location sensing, there are technologies. But these technologies cost too much for installing and maintaining. On the other hand, personal wireless network is widely used such as Wireless LAN (IEEE802.11b/a). There are a few research of location sensing using Wireless LAN. In this paper, we propose a location sensing technique using wireless network. Our technique will provide a low cost and high precision location sensing infrastracture. The precision of location sensing with wireless network is not good usualy. Our proposed techinique improve the precision, if they sense the location of multiple hosts simultaneously. Simulation results show 40% improvement of precision in a case of 9 reference hosts, 20 mobile hosts and 20% error of distance measurement.

Location sensing technology is very important for the infrastracture of ubiquitous computing environment. Outdoor location sensing technology such as GPS is already developed and widely used. For indoor location sensing, there are technologies. But these technologies cost too much for installing and maintaining. On the other hand, personal wireless network is widely used such as Wireless LAN (IEEE802.11b/a). There are a few research of location sensing using Wireless LAN. In this paper, we propose a location sensing technique using wireless network. Our technique will provide a low cost and high precision location sensing infrastracture. The precision of location sensing with wireless network is not good usualy. Our proposed techinique improve the precision, if they sense the location of multiple hosts simultaneously. Simulation results show 40% improvement of precision in a case of 9 reference hosts, 20 mobile hosts and 20% error of distance measurement.

Journal

  • 情報処理学会論文誌コンピューティングシステム(ACS)

    情報処理学会論文誌コンピューティングシステム(ACS) 44(SIG10(ACS2)), 131-140, 2003-07-15

    Information Processing Society of Japan (IPSJ)

References:  10

Cited by:  17

Keywords

Codes

  • NII Article ID (NAID)
    110002711850
  • NII NACSIS-CAT ID (NCID)
    AA11833852
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1882-7829
  • NDL Article ID
    6649182
  • NDL Call No.
    Z74-C192
  • Data Source
    CJP  CJPref  NDL  NII-ELS  IR  IPSJ 
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