Research Article
A Contention Window Adaptive MAC Protocol for Wireless Sensor Networks
@INPROCEEDINGS{10.1109/ChinaCom.2012.6417547, author={Weixia Zou and Erfei Wang and Zheng Zhou and Weihua Li and Yabin Ye}, title={A Contention Window Adaptive MAC Protocol for Wireless Sensor Networks}, proceedings={7th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2012}, month={9}, keywords={wireless sensor networks (wsn) medium access control (mac) back off mechanis contention window adaption}, doi={10.1109/ChinaCom.2012.6417547} }- Weixia Zou
Erfei Wang
Zheng Zhou
Weihua Li
Yabin Ye
Year: 2012
A Contention Window Adaptive MAC Protocol for Wireless Sensor Networks
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2012.6417547
Abstract
Wireless Sensor Networks (WSNs) have been widely applied in many domains. Medium Access Control (MAC) protocols, the bottom part of the WSNs’ protocols, have a significant influence on the performance of the network. Considering the deficiencies of back off mechanism in SMAC, we modify the RTS frame as well as the contention window. Then we put forward an improved back off algorithm which adopts the adjustable contention window instead of the constant contention window. In the algorithm, the node not only concerns the competition of the medium by setting two counters, but also takes the neighbors’ competition of the channel into account to evaluate the busy-idle condition of the medium. Simulation results on ns-2 show that our MAC protocol has better energy efficiency and lower latency compared to SMAC protocol.