Abstract: Based on the characteristic of vehicle mobile ad hoc network，for the first time，this paper analyzes the unstable situations of routing in vehicular mobile ad hoc network from the point of routing fracture，then proposes a GPS-free routing protocol RSBA（Relative Stability Based AODV Routing Protocol），with vehicle’s relative stability as it’s auxiliary parameter in routing establish process.Simulation shows RSBA’s lower route broken rate and routing overhead，as well as it’s better performances in reducing packet drop rate compared with AODV in high node’s density urban vehicle environment and validates the correctness of the analytic strategy and conclusions of the stability of vehicle mobile ad hoc network.

摘要： 针对车载移动ad hoc网络的特点，从路由断裂的角度在原理和理论上分析了车载移动ad hoc网络路由不稳定的各种情况，在分析结论的基础上提出了一种不依赖GPS信息的基于节点相对稳定性的类AODV路由协议RSBA（Relative Stability Based AODV Routing Protocol），通过可行性分析及实验仿真证明了新协议比AODV协议更适合节点密度较高的城市车载环境，具有较低的路由断链率和路由负载，有效降低丢包率，可扩展性提高，同时验证了对车载移动ad hoc网络路由稳定性分析策略和结论的正确性。