无线传感器网络中能量均衡的组播路由协议  

Energy-balancing Protocol for Multicast in Wireless Sensor Networks

作　　者：蒋佳铭[1] 许力[1] 

机构地区：[1]福建师范大学数学与计算机科学学院,福建福州350108

出　　处：《福建师范大学学报（自然科学版）》2011年第1期46-51,共6页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省自然科学基金资助项目(2008J0014)

摘　　要：以锚节点与监测区域相距很远的无线传感器网络为研究对象,提出了一种能量均衡的组播路由算法.该算法分成两个阶段:在第一阶段,前向转发区域内的候选节点通过依据自己的剩余能量及到接入点的距离设定定时器来竞争转发数据包;在第二阶段,算法在多播区构建一棵以接入节点为根节点的组播树,树中的节点根据当前父节点及候选节点的剩余能量更新父节点.An energy-balancing multicast routing algorithm is proposed for a WSN scenario,in which the sink node is probably far away from the monitoring area.This algorithm has two steps：in the first step,each node in the forwarding area contends for relaying packets by setting its timer according to its residual energy and the distance to the access point;in the second step,a multicasting tree rooting from access point is constructed among nodes in the multicast area,and nodes in this tree updating their parent nodes according to the residual energy of their parent candidates.

关 键 词：无线传感器网络 能量均衡 组播 平坦图 生命周期 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]