Adapted listening in wireless sensor network MAC protocol

Authors:
Zhen Fu;Yuan Yang;Tae-Seok Lee;Myong-Soon Park
Affiliations:
Internet Computing Lab, Dept. of Computer Science and Engineering, Korea University, Korea;Internet Computing Lab, Dept. of Computer Science and Engineering, Korea University, Korea;Internet Computing Lab, Dept. of Computer Science and Engineering, Korea University, Korea;Internet Computing Lab, Dept. of Computer Science and Engineering, Korea University, Korea
Venue:
UIC'06 Proceedings of the Third international conference on Ubiquitous Intelligence and Computing
Year:
2006

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Abstract

Research activity in the area of medium-access control protocols of wireless sensor networks (WSN) has grown dramatically in the past few years. A number of MAC protocols are proposed to achieve energy efficiency upon the limitation of WSN which are usually deployed in a special environment, assigned with long-term work, and supported by limited battery. It is found that there is a trade-off between energy efficiency and transmission delay, thus duty cycle of fixed sleep/listening MAC protocols has to be adjusted carefully to achieve the best performance. Taking the challenge to design an adapted listening mechanism, A-MAC is designed to adaptively and dynamically adjust the duty listening time based on traffic load. With A-MAC, it can achieve more power efficiency in low traffic load and much less transmission latency comparing to existing MAC protocols. We simulate A-MAC, and the simulation result shows that A-MAC can significantly prolong the lifetime of network when traffic is low and reduce packet delivery latency.