无线传感器网络LEACH协议改进与仿真研究

The improvement and simulation research of wireless sensor network LEACHprotocol

针对无线传感器网络中传统LEACH协议在分簇机制及数据通信方面的不足,在LEACH协议基础上提出一种改进协议.新协议在簇头的选取方面考虑到节点的剩余能量这一因素,同时对簇头选取阈值进行修正.在簇头,与基站通信中综合考虑距离和节点剩余能量等因素并采取单多跳并存的通信方式.实验结果表明,改进后的协议较原LEACH具有更好网络生命周期,突出表现在距离基站较远的无线传感器网络中.

Aiming at overcoming the shortage of clustering mechanism and data communication in traditional LEACH protocol of wireless sensor network,an improved protocol was proposed on the basis of LEACH protocol. In the selection of cluster head, the improved protocol takes the factor of residual energy into consideration, meanwhile, the selection of cluster value should be revised. The regearch takes distance and node surplus energy into account in cluster head and base station communication, and adopts the communication way of one or more jumps coexisting. The simulation experiment results show that the improved protocol has a longer network life cycle than the original LEACH protocol, especially for the wireless sensor network which far from the base station.