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无线传感器网络(WSN,Wireless Sensor Network)中,如何减少节点的能耗一直是簇头选择机制的研究目标。现提出了一种基于历史能耗信息选择机制的簇头选择算法(CHCM,Cluster Head Choosing Mechanism),该算法通过节点历史能耗信息和节点分布密度参数预测簇头能耗速度,并将该预测方法融入簇头选取过程当中,使网络生命期延长。最后利用CHCM对LEACH路由协议进行改进,得到CHCM+LEACH路由协议。仿真结果表明CHCM+LEACH在网络生命期和网络总剩余能量上分别比LEACH算法分别提高了27%和14%。
How to reduce the energy consumption of nodes has always been the research goal of cluster head selection mechanism in Wireless Sensor Network (WSN). A cluster head selection algorithm (CHCM) based on the history energy consumption information selection mechanism is proposed. The algorithm estimates the energy consumption of cluster heads based on historical energy consumption information and node distribution density parameters, The method incorporates the process of cluster head selection to prolong the network lifetime. Finally, using CHCM to improve the LEACH routing protocol, get CHCM + LEACH routing protocol. Simulation results show that the CHCM + LEACH increases by 27% and 14% respectively over the lifetime of the network and the total residual energy of the network respectively over the LEACH algorithm.