基于内容的无线传感器网络路由协议

针对无线传感器网络环境下低功耗路由问题,根据无线传感器网络是一种以数据为中心的网络的特点,提出了一种基于内容的低功耗路由协议CBP。其基本思想是:Sink节点根据上层应用构造谓词,并对谓词进行广播,网络中所有传感节点以Sink节点的谓词为依据建立路由表,实现数据路由。与现有无线传感器网络路由协议相比较,此路由协议具有低功耗,占用节点资源少,网络容错能力强等特点。仿真结果表明,在节点数量大于100的大规模网络中,基于内容的无线传感器网络路由协议功耗比定向扩散协议功耗降低19%。

A Content- based Routing Protocol for Wireless Sensor Network

In this paper,the power efficient routing problem for wireless sensor network is addressed.According to the character of data-centric for Wireless Sensor Network(WSN),more power efficient routing protocol-CBP is proposed.Main idea of the protocol is:the sink nodes construct predicates according to the application,and broadcast the predicates to all sensor nodes.Sensor nodes build its own routing table in with the received predicates,data packets are routed based on the routing table already built.The CBP is more power efficient than traditional routing protocol.It is fault tolerant and with small memory footprint.Simulation results show the total power consumption is reduced by about 19% than that of direct diffusion protocol in large scale networks.