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Impact of contention based MAC on the performance of a wireless sensor network for environmental monitoring

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5 Author(s)
Conti, A. ; Dipt. di Elettronica, Inf. e Sistemistica, Bologna Univ., Italy ; Dardari, D. ; Buratti, C. ; Sangiorgi, D.
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An analytical framework to evaluate the performance of a dense energy-efficient wireless sensor network (WSN) enabling environment monitoring is developed in this paper. We address the estimation of a target multidimensional process by means of samples that are captured by nodes randomly and uniformly distributed and transmitted to a collector through a self-organizing clustered network. The WSN performance is defined in terms of both process estimation error and network lifetime. A new contention-based medium access control (MAC) protocol is introduced to reduce retransmissions. The impact of the proposed MAC strategy on the energy budget is shown.

Published in:

Wireless Sensor Networks, 2005. Proceeedings of the Second European Workshop on

Date of Conference:

31 Jan.-2 Feb. 2005