一种基于改进粒子群的无线传感器网络层次化聚类协议

延长网络的生存周期是无线传感器网络路由设计的主要目标之一。簇头的高能耗是网络快速死亡的一个重要原因。提出一种基于改进粒子群PSO( Particle Swarm Optimation)的无线传感器网络聚类路由协议IPSOCH。利用中继节点来分担簇头数据转发的任务,减轻簇头节点的负载,并利用改进的粒子群算法通过节点的剩余能量信息和位置信息来选择簇头和中继节点。仿真实验表明,IPSOCH协议比起现有的几种路由协议,能有效提高能量使用率,延长网络生存周期。

A Clustering Hierarchy Protocol based on an Improved PSO algorithm in Wireless Sensor Networks

Maximizing the lifetime is a major objective for designing and planning the operation of a wireless sensor network( WSN) . Huge energy consumption of cluster heads is the vital reason for the network’s rapidly death. A clustering hierarchy protocol for WSN was brought forward. The protocol takes both energy efficiency and transmis￣sion distance of the nodes into consideration,and relay nodes are used to balance the heavy consumption of cluster heads. In this way,the network results in better distributed sensors and a well￣balanced clustering system enhancing the network’s lifetime. Simulation experiments compare the proposed protocol with comparative protocols by varying a number of parameters,e. g.,the number of the nodes,the network area size,and the position of the BS. Simulation results show that the proposed protocol performs well over other comparative protocols in various scenes.