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。
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.
出处
《计算机工程》
CAS
CSCD
北大核心
2011年第7期112-114,共3页
Computer Engineering
基金
湖南省自然科学基金资助项目(10JJ5069)
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
WSN
Low Energy Adaptive Clustering Hierarchy（LEACH） protocol
election in the cluster
remaining energy
distance factor
