Time varying opportunistic protocol for maximizing sensor networks lifetime

Kobi Cohen, A. Leshem

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


We consider transmission scheduling by medium access control (MAC) protocols for energy limited wireless sensor networks (WSN) in order to maximize the network lifetime. Time-varying opportunistic protocol (TOP) for maximizing the network lifetime is proposed. By executing TOP each sensor exploits local channel state information (CSI) and local residual energy information (REI). TOP implements opportunistic strategy in terms of favoring sensors with better channels when the network is young, while less opportunistic and more conservative strategy in terms of prioritizing sensors with higher residual energy when the network is old. TOP significantly simplifies the implementation of carrier sensing as compared to other distributed MAC protocols. Simulation results show that TOP achieves significant performance gains over other distributed MAC protocols.
Original languageAmerican English
Title of host publication2009 IEEE International Conference on Acoustics, Speech and Signal Processing
StatePublished - 2009

Bibliographical note

Place of conference:Taipei


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