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An energy-efficient cooperative MAC protocol with piggybacking for wireless sensor networks

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3 Author(s)
Xurong Pi ; Inst. of Commun. Eng., PLAUST, Nanjing, China ; Yueming Cai ; Guoliang Yao

Cooperative technology is one of the promising techniques to enhance the performance of wireless networks. In this paper, a cooperative MAC protocol with piggybacking (CPS-MAC) is designed for the WSN to improve the energy efficiency of the nodes' communication with each other. In this protocol, a relay node is selected basing on the buffer state and the channel state information (CSI) obtained by the RTS/CTS messages. The numerical results show that the energy consumed per transmitted bit decrease by 25%-35% when using CPS-MAC. And improving energy efficiency by reducing the duty cycle to a proper level is proved to be feasible.

Published in:

Wireless Communications and Signal Processing (WCSP), 2011 International Conference on

Date of Conference:

9-11 Nov. 2011