Asynchronous location tracking algorithms for distributed power-saving wireless sensor networks

Chien Hua Chen*, Kai-Ten Feng

*Corresponding author for this work

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

2 Scopus citations

Abstract

In recent years, energy conservation has been considered as an important topic within the wireless sensor networks (WSNs). How to extended the network lifetime with cost-effective management is the primary concern within the design of powersaving mechanisms for WSNs. In this paper, with the consideration of energy conservation, two location tracking algorithms are proposed in the distributed WSNs in order to trace a mobile station that is not synchronized with the corresponding sensor nodes (SNs). The scheduled power-saving tracking (SPT) scheme is first proposed for the SNs to trace the MS's beacon instants and consequently to track its movement in a power-saving manner. Coordinators are selected to manage and collect the information for location estimation and tracking of the MS. The predicted information with respect to the MS's movements is obtained by the coordinator in order to notify specific hearable SNs for receiving the MS's next beacon. Moreover, the geometry-assisted power-saving tracking (GPT) algorithm is proposed to further conserve the energy of the SNs. With the consideration of the geometry dilution of precision effect, only specific three SNs will be selected for the computation of MS's positions. Performance comparison of the proposed schemes are conducted by observing both the power efficiency and tracking accuracy under varied MS's velocities. Compared to the SPT scheme, numerical results show that the proposed GPT algorithm can effectively extend the network lifetime and also achieve comparable tracking accuracy.

Original languageEnglish
Title of host publication2009 IEEE Wireless Communications and Networking Conference, WCNC 2009 - Proceedings
DOIs
StatePublished - 22 Sep 2009
Event2009 IEEE Wireless Communications and Networking Conference, WCNC 2009 - Budapest, Hungary
Duration: 5 Apr 20098 Apr 2009

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Conference

Conference2009 IEEE Wireless Communications and Networking Conference, WCNC 2009
CountryHungary
CityBudapest
Period5/04/098/04/09

Keywords

  • Geometry dilution of precision (GDOP)
  • Location tracking
  • Power-saving
  • Wireless sensor networks

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    Chen, C. H., & Feng, K-T. (2009). Asynchronous location tracking algorithms for distributed power-saving wireless sensor networks. In 2009 IEEE Wireless Communications and Networking Conference, WCNC 2009 - Proceedings [4917605] (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2009.4917605