摘要
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%。
Cluster head selection mechanism mainly focuses on how to reduce the node energy consumption.A Cluster head choosing mechanism（CHCM） based on historical energy consuming entropy is proposed.In CHCM,Cluster head＇s lifetime and energy consuming rate can be predicted by calculating the historical information and the nodes distribution parameters.In addition,network lifetime can be prolonged through applying this prediction in Cluster head choosing procedure.Finally,CHCM is adopted to improve LEACH and acquire CHCM＋LEACH.Simulation results indicate that CHCM＋LEACH outperforms LEACH by 32% and 14% respectively in network lifetime and total residual energy.
出处
《通信技术》
2011年第11期97-99,共3页
Communications Technology
关键词
无线传感器网络
簇头选取
历史能耗信息
WSN
cluster head selection
historical energy consumption information
