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基于LEACH协议的簇头选举改进算法
引用本文:廖明华,张华,王东. 基于LEACH协议的簇头选举改进算法[J]. 计算机工程, 2011, 37(7): 112-114. DOI: 10.3969/j.issn.1000-3428.2011.07.037
作者姓名:廖明华  张华  王东
作者单位:1. 湖南大学计算机与通信学院,长沙410082;湖南财政经济学院信息管理系,长沙410205
2. 湖南财政经济学院信息管理系,长沙,410205
3. 湖南大学计算机与通信学院,长沙,410082
基金项目:湖南省自然科学基金资助项目
摘    要:以减小LEACH协议簇形成过程中的能量消耗为目的,提出一种改进的簇头选举算法LEACH-ECHC。当所有簇头的剩余能量最小值小于某个阈值时,进行全网选举;当簇头能量小于该簇剩余能量的平均值时,进行簇内选举,并对簇头产生的阈值进行优化。仿真结果显示,LEACH-ECHC算法有更高的能量有效性,可以延长网络寿命,使节点能耗更均衡。

关 键 词:无线传感器网络  LEACH协议  簇内选举  剩余能量  距离因子

Improved Cluster-head Election Algorithm Based on LEACH Protocol
LIAO Ming-hua,ZHANG Hua,WANG Dong. Improved Cluster-head Election Algorithm Based on LEACH Protocol[J]. Computer Engineering, 2011, 37(7): 112-114. DOI: 10.3969/j.issn.1000-3428.2011.07.037
Authors:LIAO Ming-hua  ZHANG Hua  WANG Dong
Affiliation:1(1.School of Computer and Communication,Hunan University,Changsha 410082,China;2.Department of Information Management,Hunan College of Finance and Economics,Changsha 410205,China)
Abstract:In order to reduce the energy of clustering in Low Energy Adaptive Clustering Hierarchy(LEACH),this paper proposes an improved cluster-head election algorithm namely Election of Cluster Heads in the Cluster(LEACH-ECHC).If the residual energy of each cluster-head is lower than the given threshold,cluster-head election is done in the whole network.If the cluster-head's residual energy is lower than the average residual energy,the election is done in the cluster.And the selection method of the threshold for electing cluster-head is optimized.Simulation results demonstrate that LEACH-ECHC has better energy efficiency,prolongs network lifetime,and makes node energy consumption more balanced.
Keywords:WSN  Low Energy Adaptive Clustering Hierarchy(LEACH) protocol  election in the cluster  remaining energy  distance factor
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