Zero-knowledge real-time indoor tracking via outdoor wireless directional antennas

Thadpong Pongthawornkamol, Shameem Ahmed, Klara Nahrstedt, Akira Uchiyama

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

Abstract

WiFi localization and tracking of indoor moving objects is an important problem in many contexts of ubiquitous buildings, first responder environments, and others. Previous approaches in WiFi-based indoor localization and tracking either assume prior knowledge of indoor environment or assume many data samples from location-fixed WiFi sources (i.e. anchor points). However, such assumptions are not always true, especially in emergency scenarios. This paper explores the possibility of real-time indoor localization and tracking without any knowledge of indoor environment and with real-time data samples from only few anchor points outside the building. By using a small set of synchronized directional antennas as outdoor anchor points to actively scan in various directions, a moving device inside the building can be localized and tracked from the received signal in real-time manner. The paper proposes an angle-of-arrival estimator for accurate localization and adaptive per-antenna angular scheduling for real-time indoor tracking. The validation results from real experiment and simulation yield effectiveness and accuracy of the proposed schemes.

Original languageEnglish (US)
Title of host publication2010 IEEE International Conference on Pervasive Computing and Communications, PerCom 2010
Pages253-261
Number of pages9
StatePublished - Sep 15 2010
Event8th IEEE International Conference on Pervasive Computing and Communications, PerCom 2010 - Mannheim, Germany
Duration: Mar 29 2010Apr 2 2010

Publication series

Name2010 IEEE International Conference on Pervasive Computing and Communications, PerCom 2010

Other

Other8th IEEE International Conference on Pervasive Computing and Communications, PerCom 2010
CountryGermany
CityMannheim
Period3/29/104/2/10

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Software
  • Theoretical Computer Science

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  • Cite this

    Pongthawornkamol, T., Ahmed, S., Nahrstedt, K., & Uchiyama, A. (2010). Zero-knowledge real-time indoor tracking via outdoor wireless directional antennas. In 2010 IEEE International Conference on Pervasive Computing and Communications, PerCom 2010 (pp. 253-261). [5466968] (2010 IEEE International Conference on Pervasive Computing and Communications, PerCom 2010).