Channel surfing: Defending wireless sensor networks from interference

Wenyuan Xu, Wade Trappe, Yanyong Zhang

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

144 Scopus citations

Abstract

Wireless sensor networks are susceptible to interference that can disrupt sensor communication. In order to cope with this disruption, we explore channel surfing, whereby the sensor nodes adapt their channel assignments to restore network connectivity in the presence of interference. We explore two different approaches to channel surfing: coordinated channel switching, where the entire sensor network adjusts its channel; and spectral multiplexing, where nodes in a jammed region switch channels while nodes on the boundary of a jammed region act as radio relays between different spectral zones. For spectral multiplexing, we have devised both synchronous and asynchronous strategies to facilitate the spectral scheduling needed to improve network fidelity when sensor nodes operate on multiple channels. In designing these algorithms, we have taken a system-oriented approach that has focused on exploring actual implementation issues under realistic network settings. We have implemented these proposed methods on a testbed of 30 Mica2 sensor nodes, and the experimental results show that these strategies can each repair network connectivity in the presence of interference without introducing significant overhead.

Original languageEnglish (US)
Title of host publicationIPSN 2007
Subtitle of host publicationProceedings of the Sixth International Symposium on Information Processing in Sensor Networks
Pages499-508
Number of pages10
DOIs
StatePublished - 2007
Externally publishedYes
EventIPSN 2007: 6th International Symposium on Information Processing in Sensor Networks - Cambridge, MA, United States
Duration: Apr 25 2007Apr 27 2007

Publication series

NameIPSN 2007: Proceedings of the Sixth International Symposium on Information Processing in Sensor Networks

Other

OtherIPSN 2007: 6th International Symposium on Information Processing in Sensor Networks
Country/TerritoryUnited States
CityCambridge, MA
Period4/25/074/27/07

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Signal Processing
  • Electrical and Electronic Engineering

Keywords

  • Across multiple channels
  • Channel surfing
  • Each having unique characteristics
  • Jamming
  • Radio interference

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