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在Manhattan移动模型的基础上,深入分析了车载移动Ad hoc网络路由协议的性能问题.结合AODV路由协议,提出了一种可以量化分析车载Ad hoc网络路由断链率和路由负载的模型.模型分析指出,传统的移动Ad hoc网络路由协议应用于车载Ad hoc网络时性能会严重下降.针对这一问题,提出了一种基于车辆运动方向信息的类AODV路由协议DBAP,将车辆的运动方向信息作为其路由发现过程中的辅助参数,从而显著地增强了路由稳定性.仿真结果验证了模型的正确性,同时证明了本文所提出的DBAP路由协议在城市车载环境中具有较低的路由负载和路由断链率,在协议性能等方面相对于AODV协议具有显著提高.
Based on the Manhattan mobile model, this paper analyzes the performance of routing protocol in vehicular mobile Ad hoc networks in detail.A model that can quantitatively analyze the link breaking rate and routing load in Ad hoc networks is proposed by combining with AODV routing protocol. It is pointed out that the performance of traditional Ad Hoc network routing protocols will be severely degraded when applied to vehicular Ad hoc networks.Aiming at this problem, a kind of AODV routing protocol DBAP based on vehicle motion direction information is proposed, which takes the motion direction information of vehicles as The routing parameters and its auxiliary parameters in the process of route discovery, which significantly enhances the routing stability.The simulation results verify the correctness of the model and prove that the DBAP routing protocol proposed in this paper has lower routing load and routing in the urban vehicle environment Broken chain rate, in terms of protocol performance and other aspects of the AODV protocol has significantly improved.