摘要： 在COSEN算法基础上，提出一种多级分层链路算法。该算法根据各节点与基站的距离排序，固定各层节点数量来进行分层，每层节点形成一个簇链，并以剩余能量为基准由上级簇首在指定范围内选举下级簇首，各簇首负责收集本层数据并融合从下级簇首收到的数据，将融合后的数据发送给上级簇首，逐层传递直至基站。通过NS3平台仿真验证，结果表明，该算法的传输时延和能耗均优于PEGASIS算法及COSEN算法。

关键词: 无线传感器网络, 分簇, 链路, 路由协议, 时延

Abstract: Multi-stage Stratified Link Routing(MSLR) algorithm is proposed on the basis of COSEN. Here all the sensor nodes are sorted according to the distance from base station to themselves and divided into several stages with a fixed number of nodes per layer. Nodes belong to each stage form one cluster and select one node to be cluster-head in the specified range by the parent cluster-head to gather data of its stage and integrate data received from the lower cluster-head, and transmit them to its superior cluster-head until these data reach the base station. Compared with the schemes of PEGASIS and COSEN through NS3 computer simulation platform, result shows that MSLR shortens the transmission delay greatly, and significantly improves the network lifetime.

Key words: Wireless Senor Networks(WSN), clustering, link, routing protocol, time delay

中图分类号: 

• TP393