【摘要】 为了优化城市交通环境中车载自组织网络中路由协议的链路存活时间、吞吐量等性能指标,在拓扑反应式路由协议的基础上,引入车载网络节点的位置信息,设计基于动态实时位置信息变化的车载路由协议优化模型。该模型按照十字路口车辆优先和相对位置为同方向节点优先转发的原则,根据路由信息表中位置信息区分转发控制包,并给出该路由算法的面向C++语言的UML建模图及其算法流程图。通过NS2仿真平台仿真表明,与传统的路由模型相比,该模型优化了VANETs网络中链路存活时间、时延、吞吐量等性能指标。更多还原

【Abstract】 In order to optimize the performance indexes of routing protocol link survival time and throughput in vehiclemounted Ad Hoc network of city traffic environment,and on the basis of the topology reactive routing protocol,the position information of the vehicle-mounted network nodes is introduced to design the vehicle-mounted routing protocol optimization model(M-AODV)based on the dynamic change of real-time location information. This model is based on the priority forwarding principle of the crossroad vehicles and the relative location as the nodes in the same direction,and used to distinguish the forwarding control packets according to the position information in routing information table. The UML modeling graph of the routing algorithm and algorithm flow chart oriented to C++ language are given. The simulation results obtained from NS2 simulation platform show that,in comparison with the traditional routing model,the proposed model can optimize the performance indexes in VANETs,such as network link survival time,time delay,throughput,etc.更多还原