一种城市环境下的地理位置路由策略改进方法①

摘要

To tackle the problems of applying GPSR routing protocol in urban scenarios, an improved protocol is proposed. The protocol detects the status information of vehicle node network transmission load and traveling direction, and these factors will be considered in new routing forwarding. The new protocol chooses the path of small transmission delay and strong robustness to forward data, what effectively improves the route transmission efficiency in the urban environment. NS2 simulation results show that the improved routing protocol performs well.%在城市环境下的 VANET 应用场景中，传统的基于地理位置信息的路由算法如 GPSR 等存在一些问题，本文在此基础上提出一个改进的路由协议，通过对车辆节点网络传输负荷以及所在路段方向等状态信息进行检测，并将此作为路由转发选择依据。新协议选择传输延时小并且路由健壮性较强的路径进行数据转发，有效地提高了城市环境下的路由传递效率。 NS2仿真结果表明新协议具有较好的性能。