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Cross‐layer MAC design for location‐aware wireless sensor networks
Author(s) -
Shi Qiong,
Comaniciu Cristina,
Wang Dandan,
Tureli Ufuk
Publication year - 2011
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.1195
Subject(s) - computer science , computer network , throughput , wireless sensor network , distributed coordination function , reliability (semiconductor) , protocol (science) , exponential backoff , cross layer optimization , layer (electronics) , wireless , function (biology) , wireless network , real time computing , ieee 802.11 , telecommunications , medicine , power (physics) , chemistry , physics , alternative medicine , organic chemistry , pathology , quantum mechanics , evolutionary biology , biology
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.