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

Authors:
Qiong Shi;Cristina Comaniciu;Dandan Wang;Ufuk Tureli
Affiliations:
Department of Electrical and Computer Engineering, Stevens Institute of Technology, NJ 07030, U.S.A.;Department of Electrical and Computer Engineering, Stevens Institute of Technology, NJ 07030, U.S.A.;Alcatel-Lucent, NJ 07974, U.S.A.;Electrical and Computer Engineering Department, West Virginia Institute of Technology, WV 25136, U.S.A.
Venue:
International Journal of Communication Systems
Year:
2011

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An energy efficient medium access control protocol for target tracking based on dynamic convey tree collaboration in wireless sensor networks

International Journal of Communication Systems

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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. Copyright © 2010 John Wiley & Sons, Ltd.