车载自组网单播路由协议对比分析  

Analysis and comparison of unicast routing protocols in VANET

作　　者：刘峥[1] 向勇[2] 孙卫真[1] 

机构地区：[1]首都师范大学信息工程学院,北京100048 [2]清华大学计算机科学与技术系,北京100084

出　　处：《计算机工程与设计》2011年第11期3622-3628,共7页Computer Engineering and Design

基　　金：国家863高技术研究发展计划基金项目(2008AA01Z220)

摘　　要：为了掌握车载自组网单播路由协议面临的主要问题,了解影响路由协议的重要因素,需要对主要的车载自组网单播路由协议的特征、工作模式和协议使用的路由信息进行定性分析;通过分析有代表性的单播路由协议,提出了车载环境中较为重要的5种有效信息;通过NS2仿真实验定量分析车载环境中有效信息所起的作用。同时分析了路口信号灯、车辆密度对AODV、GeocastEnhancedAODV和GPSR这3种典型协议的影响,并提出充分利用位置、道路信息和车辆行驶特征是车载自组网单播路由协议改进的方向。A survey of VANET unicast routing protocols is provided and the advantages and disadvantages of these routing protocols are discussed, which can be classified into topology-based and information-based. To understand their designs better, these protocols are summarized according to the major challenges, their characteristic and operational modes, and five useful information is presented in vehicle environment. A variety of useful information and the major routing information are described, which is important for routing protocol. Three routing protocols, AODV, Geocast Enhanced AODV and GPSR, are simulated in NS2 and it concludes that the traffic light and vehicle density have impact on the performance of routing protocols. Finally, a few improved solutions of routing protocol in the future are presented.

关 键 词：车载自组网 单播路由 路由信息 协议仿真 协议分析 

分 类 号：TP393.03[自动化与计算机技术—计算机应用技术]