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Efficient MAC Protocols for Wireless Sensor Networks Endowed with Directive Antennas: A Cross-Layer Solution

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Author(s): Manes Gianfranco | Fantacci Romano | Chiti Francesco | Ciabatti Michele | Collodi Giovanni | Di Palma Davide | Nelli Ilaria | Manes Antonio

Journal: EURASIP Journal on Wireless Communications and Networking
ISSN 1687-1472

Volume: 2007;
Issue: 1;
Start page: 037910;
Date: 2007;
Original page

ABSTRACT
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, the related performance is presented, in terms of network lifetime gain, setup 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 setup latency.
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