Performance Evaluation Depends on Availability of Connection to Access Points on Wireless LAN Positioning System

本稿では無線LAN位置特定システムにおいて，アクセスポイント（AP）への接続の有無が位置特定性能に与える影響について実験により評価を行っている．Scene Analysisにおける学習用，評価用データ取得時のAPへの接続の有無が位置特定に与える影響，APの属性の違いとAPへの接続の有無が位置特定に与える影響，これらの性能評価の結果から，APへの接続の有無によって位置特定性能に差が生じることを示している．実験結果と実際のLBSなどのシステムの利用を鑑みた改善手法の検討を行っている．以上のことから，LBSなどのシステム利用時にAPに接続している場合でも，未接続と同程度の位置特定性能を得ることのできる可能性を見出している．This paper evaluates smartphone positioning performance using wireless LAN. We particularly focus on connection/unconnection to access points (AP). The experiments performed are as follows: Investigation of the influence on the availability of connection to the AP at survey and estimate data acquisition in Scene Analysis on positioning performance, Investigation of the influence of the difference in attribute of AP and the availability of connection to AP on positioning performance, From the result of these performance evaluations, we show that a difference occurs in the positioning performance because of the availability to connection to AP. We examine the improvement technipue in view of the result of performance evaluations and the use of systems such as real LBS(Location Based Services) From the above, even when connecting to an AP when using a system such as LBS, We have found the possibility of obtaining the same position identification performance as unconnected.copyright©2017 IEIC