Cross-layer MAC design for location-aware wireless sensor networks

Qiong Shi, Cristina Comaniciu, Dandan Wang, Ufuk Tureli

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

In this paper, we propose an optimization of MAC protocol design for wireless sensor networks, that accounts for cross-layering information, in terms of location accuracy for nodes and residual energy levels. In our proposed solution we encode this cross-layer information within a decreasing backoff function in the MAC. The protocol is optimized by appropriately selecting priority window lengths, and we have shown that accurate cross-layer information plays a crucial role in achieving an optimal performance at the MAC layer level. The estimation accuracy can be characterized spatially using a location reliability probability distribution function. We show that this distribution function greatly influences the design of the optimal backoff window parameters, and the overall throughput performance of the MAC protocol.

Original languageEnglish
Pages (from-to)872-888
Number of pages17
JournalInternational Journal of Communication Systems
Volume24
Issue number7
DOIs
StatePublished - Jul 2011

Keywords

  • MAC protocol
  • cross-layer design
  • location accuracy
  • protocol optimization
  • wireless sensor networks

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