NDLI: Design of WiFi Operating Channel Estimator using Sensor Nodes for Sensor Localization System using WiFi APs as Anchors

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Design of WiFi Operating Channel Estimator using Sensor Nodes for Sensor Localization System using WiFi APs as Anchors

Content Provider	Semantic Scholar
Author	Ishida, Shigemi Izumi, Kousaku Kunihiro, Yosuke Tagashira, Shigeaki Fukuda, Akira
Copyright Year	2016
Abstract	概要:屋内では GPS(Global Positioning System)が利用できないため,屋内センサネットワークにおいて膨大な数のセンサノードの位置を取得することは大きな課題の 1つとなっている.筆者らはWiFi AP (アクセスポイント)を測位基準ノードとして利用するセンサノード測位システムの実現を目指している. ZigBee(IEEE802.15.4)モジュールを具備したセンサノードではWiFi(IEEE802.11)の信号を受信することはできないため,無線通信規格の違いを乗り越えてセンサノードでWiFi信号を検出し,RSS(受信信号強度)を測定する手法をこれまでに開発した [1, 2]. 本稿では,WiFi AP送信チャネル推定手法「WiChest」を示す.センサノードで取得したWiFi信号の RSSはWiFiの送信チャネル,センサノードの ZigBeeチャネルの両方の影響を受けるため,正確な RSS の測定に向けてはWiFiの送信チャネルに応じてセンサノードのチャネルを切り替えることが必須となる. このため,マルチチャネル AP検出,AP信号分離,送信チャネル推定という 3つの手法を組み合わせることでWiFi APの送信チャネルをセンサノードで推定する.実証評価を通じてWiChestが精度 0.90で送信チャネルを推定できることを確認した.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.f.ait.kyushu-u.ac.jp/~ishida/archives/ishida16_dicomo.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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