Detecting intra-room mobility with signal strength descriptors

Konstantinos Kleisouris, Bernhard Firner, Richard Howard, Yanyong Zhang, Richard P. Martin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

33 Scopus citations

Abstract

We explore the problem of detecting whether a device has moved within a room. Our approach relies on comparing summaries of received signal strength measurements over time, which we call descriptors. We consider descriptors based on the differences in the mean, standard deviation, and histogram comparison. In close to 1000 mobility events we conducted, our approach delivers perfect recall and near perfect precision for detecting mobility at a granularity of a few seconds. It is robust to the movement of dummy objects near the transmitter as well as people moving within the room. The detection is successful because true mobility causes fast fading, while environmental mobility causes shadow fading, which exhibit considerable difference in signal distributions. The ability to produce good detection accuracy throughout the experiments also demonstrates that our approach can be applied to varying room environments and radio technologies, thus enabling novel security, health care, and inventory control applications.

Original languageEnglish (US)
Title of host publicationMobiCom'10 and MobiHoc'10 - Proceedings of the 16th Annual International Conference on Mobile Computing and Networking and 11th ACM International Symposium on Mobile Ad Hoc Networking and Computing
PublisherAssociation for Computing Machinery
Pages71-80
Number of pages10
ISBN (Print)9781450301831
DOIs
StatePublished - 2010
Event11th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2010 - Chicago, IL, United States
Duration: Sep 20 2010Sep 24 2010

Publication series

NameProceedings of the International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc)

Other

Other11th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2010
Country/TerritoryUnited States
CityChicago, IL
Period9/20/109/24/10

All Science Journal Classification (ASJC) codes

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

Keywords

  • Experimentation

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