IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
Low Cost Metric for Comparing the Localization Efficacy of WLAN Access Points Using RF Site Survey Data
Chamal SAPUMOHOTTIMohamad-Yusoff ALIASSu-Wei TAN
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2014 Volume E97.B Issue 7 Pages 1403-1411

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Abstract
Location fingerprinting utilizes periodic beacons transmitted by Wireless Local Area Network (WLAN) Access Points (APs) to provide localization in indoor environments. Currently no method is able to quantify the effectiveness of localization information provided by individual APs. Such a metric would enable the optimal placement of new APs as well as eliminating redundant APs so as to reduce the resources consumed by indoor localization software in client devices. This paper proposes LocationInfo, a metric that utilizes walk test data for quantifying the localization efficacy of APs. The performance of LocationInfo is evaluated using two experimental settings. First, it is used for identifying the optimal location for new APs. Second, it is used for filtering out excess APs in a crowded WLAN environment. In both experiments, LocationInfo outperforms existing metrics.
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© 2014 The Institute of Electronics, Information and Communication Engineers
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