基于混沌粒子群优化的无线传感器网络分簇协议

摘要

In order to reduce the energy consumption of nodes and prolong the lifetime of WSN, a clustering protocol based on Chaos-PSO is proposed. The protocol improves the cluster-head selection mechanism, it considers nodes' residual energy ,distance to sink node and range of clusters. It optimizes cluster-head selection by Chaos-PSO. Then the other nodes decide whether they join the cluster or do not join it by comparing the signal strength of advertisement message with a predefined threshold, and the range of cluster is restricted. The simulation results show that,compared with LEACH,the new protocol can efficiently save energy and prolong the lifetime of WSN.%为了降低无线传感器网络节点的能耗,延长网络的存活周期,提出了一种基于混沌粒子群优化的分簇协议.该协议改进了经典LEACH协议的簇头选择机制,考虑到了节点剩余能量、与汇聚节点的距离以及簇范围等因素,通过混沌粒子群算法对簇头选举进行优化.确定簇头后,其它节点通过比较簇头当选信息的信号强度与设定强度阀值的大小来决定是否成为簇成员,从而约束了簇的范围.仿真结果表明,与传统的LEACH协议相比,新协议能够有效地节省能量,延长网络的寿命.