移动传感器网络路由协议的多跳数据传输及能耗性能分析

摘要

To explore the relationship between the performance of routing protocols and node mobility on a mobile wireless sensor network, the paper constructs eleven static models and sixteen mobile models for wireless sensor networks based on the network simulator NS-2, under ■ which experiments are designed for assessing the performance of AODV and DSR. Also,during the procedure of performance estimation,a new accurate hierarchical energy consumption assess method ECOB is introduced. The result of the experiments shows that when nodes are still or are moving slowly, neither do their speeds nor the network scale influence obviously the protocol performance; however when more and more mobile nodes are involved, the multi-hop transmission performance of AODV and DSR degrades with the increase of the node mobility. Compared with DSR, AODV is more suitable for the large scale scenario with high node mobility.%为了研究无线传感器网络路由协议性能与网络节点移动性之间的关系,基于网络模拟器NS-2构建了无线传感器网络的11种静止模型和16种移动模型,基于模型设计了不同的仿真实验,并对AODV和DSR协议的性能进行了评估.在评估过程中引入了一种全新的可以精确计算网络能耗的层次型能耗评价方法ECOB.实验结果表明,在节点静止及低移动速度的环境中,无线传感器网络路由协议性能受节点移动速度及网络规模的影响不大；然而,随着越来越多的移动节点参与多跳数据传输,受节点移动速度提高的影响,AODV和DSR的多跳数据传输性能下降幅度增大；与DSR相比,AODV更适合高移动性的大规模移动场景.