基于城市路网的VANET按需路由策略研究

摘要

针对AODV和GPSR路由协议在城市车载Ad Hoc网络环境下的缺陷,提出一种新的路由协议——基于城市路网的接需路由协议.协议利用城市路网信息,结合AODV按需的思想建立路径,并在建立的路径区域内利用方向邻居列表执行优化的贪婪转发机制.利用NCTUns仿真平台,采用真实的shape格式地图对协议进行仿真.结果表明新的路由协议在城市场景中具有较好的性能.%To tackle the defects of AODV and GPSR routing protocol in urban vehicular Ad Hoc networks environment, a novel routing protocol, i. e. , on-demand routing protocol based on urban road networks, is proposed. The protocol utilizes urban road networks information,combines AODV on-demand thought to establish a path, where the protocol executes optimized greedy forwarding mechanism by direction neighbor list. Results show that the new routing protocol performs well in city scenes.