CNLoc: Channel State Information Assisted Indoor WLAN Localization Using Nomadic Access Points

  • Jiang XiaoEmail author
  • Huichuwu Li
  • He Li
  • Hai Jin
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11276)


Wireless local area network (WLAN) based indoor localization is expanding its fast-paced adoption to facilitate a variety of indoor location-based services (ILBS). Unfortunately, the performance of current WLAN localization systems relying on fixed access points (APs) deployment is constrained by the spatial localizability variance (SLV) problem that different locations may exhibit significantly distinct localization resolution. Prior approaches tackle this problem through nomadic APs with favorable mobility to dynamically adjust the network topology. However, the lack of prior knowledge of nomadic AP’s position has been a challenge for location distinction and will lead to prohibitive performance degradation. In this paper, we propose and develop CNLoc, a novel CSI-based (Channel State Information) indoor WLAN localization framework to overcome the location uncertainty of nomadic APs. Our implementation and evaluation show that CNLoc can improve the accuracy with unknown location information of nomadic APs. We also discuss some open issues and new possibilities in future nomadic AP based indoor localization.


WLAN CSI RSS Mobility 



This work is supported by National Science Foundation of China under Grant No. 61702203, Hubei Provincial Natural Science Foundation General Program No. 2018CFB133.


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Copyright information

© IFIP International Federation for Information Processing 2018

Authors and Affiliations

  1. 1.Services Computing Technology and System Lab, Cluster and Grid Computing Lab, School of Computer Science and TechnologyHuazhong University of Science and TechnologyWuhanChina
  2. 2.Department of Information and Electronic EngineeringMuroran Institute of TechnologyMuroranJapan

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