基于节点密度的无线传感器网络簇首选取机制  

Cluster-Head Selection Method Based on Node's Density for Wireless Sensor Networks

作　　者：周悦[1] 李钢[1] 高宇[2] 单丹[1] 

机构地区：[1]沈阳建筑大学信息与控制工程学院,辽宁沈阳110168 [2]沈阳职业技术学院,辽宁沈阳110045

出　　处：《沈阳建筑大学学报（自然科学版）》2008年第3期499-502,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省博士启动基金(20041002);辽宁省教育厅基金(2004F044);建设部基金(06-K9-64)

摘　　要：目的避免无线传感器网络簇首过早死亡,延长网络寿命.方法使簇首节点分布在节点部署比较密集的区域,避免簇首与簇内节点通信距离较远而使簇首耗能过大.结果提出一种基于簇首与簇内节点平均距离最小化的簇首选取方式,有效地降低了位于节点密度小区域的节点成为簇首的概率,从而将节点能量均衡分布到整个网络.仿真实验表明,随着网络规模的增大,所提算法与LEACH协议相比能够延长网络的生存时间20%以上.结论笔者所提簇首选取机制能够有效地延长网络寿命.This paper presents a cluster-head selection method based on the lowest average distance between the cluster-head and its neighbor nodes. It reduces the probability for nodes to become cluster-heads in the area of sparse nodes, and makes the cluster-head deployed in more intensive region to reduce energy consumption as the communication distance between cluster-heads and the other simple nodes too large, thereby it distributes the node energy to the whole network more evenly. The simulation results show that the proposed algorithm can extend the network survival time for more than 20 %.

关 键 词：无线传感器网络 分簇 节点密度 路由 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置]