一种应用于无线传感器网络的层次型拓扑结构生成算法

在无线传感器网络中,层次型的拓扑结构将整个网络划分为不同的簇,并通过一定机制选择簇头来负责数据转发和融合。本文在LEACH等现有层次型拓扑控制算法的基础上,借鉴ad hoc网络层次拓扑生成算法WCA的设计原理,提出一种应用于无线传感器网络的新型层次型拓扑结构生成算法(HTGA)。该算法综合考虑节点的能量和位置状况,为每个节点定义不同的权值,从中选出性能优越的节点担任簇首,同时通过设置节点度参数来确保最优的拓扑结构。仿真实验结果显示,新算法在降低能耗、延长网络生存时间以及保证监测覆盖度等方面比LEACH具有更加优良的性能。

A Hierarchical Topology Generation Algorithm for Wireless Sensor Networks

In wireless sensor networks(WSN),the hierarchical topology divides the whole network into different clusters,and chooses cluster heads for data forwarding and integration.Referring to WCA in ad hoc network,this paper presents a new hierarchical topology generation algorithm(HTGA)for WSN.The algorithm gives each node different weight value according to its energy and position.Node with smaller weight has a higher probability of being elected as cluster node.Node degree parameters are also set to construct re...