引入剩余能量的LEACH协议改进算法  

Improved algorithm of LEACH protocol introducing residual energy

作　　者：徐东意[1] 张华忠[1] 

机构地区：[1]山东大学计算机科学与技术学院,济南250101

出　　处：《计算机工程与应用》2009年第28期115-119,共5页Computer Engineering and Applications

摘　　要：在LEACH协议的基础上提出了基于负载均衡和剩余能量的无线传感器网络分簇算法(CALRE)。在CALRE算法中,根据节点到基站的距离将节点分为远节点和近节点,又分别为这两种节点设置不同的最大簇成员值,以达到负载均衡的目的。在簇首选择机制上,CALRE算法提出让剩余能量最大的节点优先担任簇首,以减少算法的复杂度和簇内节点之间不必要的通信能耗。模拟实验表明,CALRE算法与LEACH协议相比具有更好的性能,优化后的簇首选择机制和簇结构,可以有效延长网络生存时间。Based on LEACH protocol,this paper proposes a new Clustering Algorithm based on Load-balance and Residual Energy （CALRE） for WSN.In CALRE,eaeh node is described as near node or far node according to its distance to the BS,and setting the maximum size for each cluster,in order to get load-balanced.And this paper makes the node become cluster head, which has the greatest residual energy,so as to get less complicaey and less energy wastage.Simulation results show that CALRE outperforms LEACH significantly with a better cluster head election mechanism and a better cluster architecture,and prolongs the network lifetime efficiently.

关 键 词：无线传感器网络 负载均衡 剩余能量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]