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Energy efficient MAC protocols for Wireless Sensor Networks endowed with directive antennas: a cross-layer solution

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8 Author(s)
Manes, G. ; Univ. of Florence, Florence ; Fantacci, R. ; Chiti, F. ; Ciabatti, M.
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This paper deals with a novel MAC layer protocol, namely directive synchronous transmission asynchronous reception (D-STAR) able to space-time synchronize a wireless sensor network (WSN). To this end, D-STAR integrates directional antennas within the communications framework, while taking into account both sleep/active states, according to a cross-layer design. After characterizing the D-STAR protocol in terms of functional characteristics and antenna model, the related performance is presented, in terms of network lifetime gain, latency and collision probability. It has shown a remarkable gain in terms of energy consumption reduction with respect to the basic approach endowed with omnidirectional antennas, without increasing the signaling overhead nor affecting the set up latency.

Published in:

Radio and Wireless Symposium, 2008 IEEE

Date of Conference:

22-24 Jan. 2008