传感器网络分布式能量平衡路由

提出一种分布式能量平衡路由算法,该算法根据邻接点的能量和状态信息达到各个节点能耗的平均.对能耗过大的节点采取保护措施,汇聚节点sink在广播兴趣阶段形成一棵广播树,各个节点距sink节点的远近不同即在广播树中处于不同的层次,从而传播网络中的任一节点就有父节点、兄弟节点和子孙节点,使得所选路径为距sink节点最短即路径最短能量平衡路由,节点感知各层次节点情况就可以根据其能量信息来重选路径.分析和仿真结果表明,这种路由方法计算简单,所需信息传输量小,可有效提高网络的生命期.

Distributed algorithm of energy equivalence routing for wireless sensor networks

A distributed algorithm is proposed for energy equivalence routing(DEER).According to the energy information of neighbor nodes,the algorithm was designed to make the energy consumption balance and protect nodes from heavy energy consumption.A broadcast tree is formed when the sink node broadcasts the interests.Other nodes in the tree lie on different levels based on the distance to the sink node.So a node in wireless sensor networks(WSNs) has parent nodes(PN),sibling nodes(SN) and child nodes(CN).Path can be rerouted if energy information about neighbor nodes is known.And paths chosen will be as short as possible,forming a shortest path of energy equivalent routing(SPEER).The analysis and simulation show that this algorithm is simpler and the information needed to transport is less.It can improve the lifetime of WSNs efficiently.