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Performance enhancement of low power listening MAC for duty cycled wireless sensor networks

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4 Author(s)
Sangsoon Lim ; Sch. of Comput. Sci. & Eng., Seoul Nat. Univ., Seoul ; Jiwoong Jeong ; Jongkeun Na ; Chong-Kwon Kim

Recently low power listening (LPL) MAC protocols based on duty-cycling mechanism have been studied extensively to achieve ultra low energy consumption in wireless sensor networks (WSNs). However, state-of-the-art LPL scheme still suffers from some performance degradation due to its own protocol incompleteness. In this paper, we propose the tau-duration CCA method to mitigate the collision probability in ACK-based LPL MAC protocol and show its performance improvement via analytical and experimental results. Our performance study indicates that ACK-based LPL MAC protocol which adopts the tau-duration CCA is significantly better than normal ACK-based LPL MAC protocol in terms of energy consumption.

Published in:

Information Networking, 2009. ICOIN 2009. International Conference on

Date of Conference:

21-24 Jan. 2009