无线传感器网络中节省能量的地理路由

针对高动态无线传感器网络中路由信息不易保持,以及传感器节点能量受限的问题,提出了一种不保存网络拓扑结构并节省能量的地理路由算法。每个节点发送数据前发送本节点的位置信息,邻居节点根据该位置信息和基站的位置、发送接收数据消耗的电路能量和传播损耗,计算虚拟中继节点的位置。邻居节点根据本节点、目的节点以及虚拟中继节点的位置决定是否参与竞争,成为中继节点。仿真结果表明,该分布式算法比BLR算法节省能量,并具有更低的丢包率,更适于拓扑快速变化的无线网络。

An Energy-saving Geographic Routing in Wireless Sensor Network

The routing information is hard to maintain and the energy is limited in highly dynamic wireless sensor network. To solve these problems, energy-saving geographic routing (ESGR) is proposed. ESGR does not maintain the network topology. A node broadcast its position information to its neighboring nodes before transmitting data. The neighboring nodes compute the virtual relay position using the data transmitter position, the base station position and the energy consumption for circuits and propagation. The neighboring nodes determine whether to become the relay node through competition based on its position, the destination position and the virtual relay node position. The simulation shows that the proposed algorithm is better than BLR because of the lower energy consumption and lower packet loss ratio. The ESGR algorithm is more appropriate for highly dynamic wireless network.