【摘要】 为了更好地在NS2环境下研究车载网络路由协议,分析了不同路由协议之间的性能差异,针对现有仿真场景存在的问题,利用MOVE软件构建了真实的仿真场景并导出支持NS-2平台仿真的脚本以用于车载网络的仿真。通过实验仿真,得到了真实的实验数据,将GPSR协议与AODV、DSDV以及DSR协议进行了比较,重点比较了在节点数量不同的情况下,协议的分组投递率、端到端的延时以及路由开销等协议性能标准。研究结果表明,在真实场景下,GPSR协议的延时以及路由开销都较小,在车载网络中的整体性能优于其他传统的网络路由协议,在节点数量不断增加时,协议表现出了更好的稳定性。更多还原

【Abstract】 In order to have better research on routing protocols of vehicular networks under NS2,the performance difference between different routing protocol was analyzed,MOVE was used to build real simulation scenarios and simulator scripts were exported into NS2 for vehicular networks simulation.Real experimental datas were received by a simulation experiment and GPSR was compared with AODV,DSDV and DSR,the packet delivery rate,end-to-end delay and route overhead under different node numbers were used as the performance metric to evaluate those routing protocols.The results indicate that GPSR has less delay and routing overhead in real scenarios,has a better overall performance in vehicular networks than other traditional routing protocols,it performs a better stability when the nodes increase.更多还原