车联网的多跳广播协议及移动模型仿真的研究现状

由于车联网(VANET,vehicular Ad Hoc networks)的节点移动速度快、拓扑动态变化以及移动轨迹局限性等特性,多跳广播成为VANET中车间通信的有效方式之一.此外,由于直接在真实环境中评估VANET的性能是非常困难的,仿真成为研究VANET的有效工具.为此,先分析VANET的网络结构,再讨论了广播协议的发展现状,并分析了典型的广播协议.随后论述了VANET移动模型仿真的发展现状,并重点分析、对比了当前交通仿真器和网络仿真器的特点.最后,探讨了车载自组网仿真器未来的发展方向.

Survey on Multi-Hop Broadcasting and Simulator of Mobility Model in VANET

Because of the nodes in vehicular Ad Hoc networks(VANET) moving and topology changing quickly,and nodes moving according to road rules,so multi-hop broadcasting becomes one of effective ways to communicate between vehicles.Since it is difficult to assess performance of real VANET,simulator becomes a very effective tool for the research of VANET.Therefore,firstly,the structure of VANET is analyzed,then development status of broadcasting protocol is discussed and the typical broadeasting protocal is analyzed.Secondly,the development direction of simulator of mobility model is reviewed,then the features of the most common used simulators of traffic and networks are analyzed and compared.Finally,the development trend of simulator of mobility model in VANET is explored.