基于聚类的无线传感器网络MAC协议的动态方案(IJEME-V2-N10-3).pdf

I.J. Education and Management Engineering, 2012, 10, 17-24 Published Online October 2012 in MECS () DOI: 10.5815/ijeme.2012.10.03 Available online at /ijeme A Dynamic Scheme Based on Clustering for Wireless Sensor Networks MAC Protocol BAO Li-yong, ZHAO Dong-feng, ZHAO Yi-fan School of Information Engineering, Yunnan University Kunming, 650091, China Abstract Wireless Sensor Networks(WSNs), as one of the most important techniques in the 21st century, receives a universal attention to the research on its key techniques.A solution is urgently expected to meet the higher-quality service requirements of various applications on the limited bandwidth of wireless networks. Based on the ideas of Priority-based polling transmission with high-efficiency, and dynamic self-adaptation to loading, this paper presents a new analysis model of MAC Scheme of wireless sensor networks, which has made possible the Cluster Header capable of differentiating the nodes of different priority levels under mixed services policy and which has improved the flexibility and adaptability of the system via adjustment of the switch-in service in three time of load change input. The theoretical model of this protocol is established with Markov chain and probability generating function. Mathematical analysis is made on the mean queue length and the mean inquiry cyclic time of the common queue and the key node. It turns out that the findings from theoretical analysis correspond well with those from simulated experiments. Index Terms: WSNs;clustering;priority-based polling system ；dynamic load adaptation © 2012 Published by MECS Publisher. Selection and/or peer review under responsibility of the International Conference on E-Business System and Education T