摘要
车载自组网络(Vehicular Ad Hoc Networks,VANET)是指道路上由车辆搭载的无线通信装置构成的一种特殊的多跳无线移动自组织网络。VANET在实现多种智能交通方面应用的同时,还能满足用户在乘车时的娱乐等舒适性的需求,近些年来已成为无线自组网络研究的新热点。总结了近些年来出现的主要VANET路由协议的核心路由机制及其优缺点,并分析了各种技术对路由协议性能的影响。其后给出了一种基于速度信息的VANET路由协议改进方法,并通过实验验证了将改进方法与GPSR协议结合可以提高路由路径的稳定性,减少了端到端的平均时延,降低了VANET网络中拓扑的高动态性对路由协议性能的影响。
Vehicular Ad Hoe Networks is a special kind of mobile ad hoc networks which consist of wireless communication devices on car. VANET has become the focus of Ad Hoe Networks research because it can not only apply to intelligent vehicle communication, but al- so satisfy the passengers＇ need of amusement and comfort. This paper summarizes the core routing mechanism of the existing representative VANET routing protocols of these years as well as its advantages and the disadvantages, analyzes the influence of various technology on the quality of the routing protocol. Besides, the paper also provides an improvement for VANET routing protocol based on speed information and testifies by experiments that the combination of the improved method and the GPSR protocol could enhance the stability of the routing link and decrease the average delay, which finally weaken the influence of high dynamic of topology on the quality of routing protocol.
出处
《智能计算机与应用》
2012年第3期6-9,共4页
Intelligent Computer and Applications
