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An enhanced GPSR routing protocol based on the buffer length of nodes for the congestion problem in VANETs

机译:基于VANET中拥塞问题的基于缓冲区的增强GPSR路由协议

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Vehicular ad hoc networks technology is an important part of intelligent transportation system which has wide developmental and applied prospect. The routing protocol is a key technology of vehicular ad hoc networks and largely determines the performance of the vehicle network communication system. Vehicular ad hoc networks (VANETs) makes great requests to routing protocol due to several reasons: firstly, vehicle nodes moving into tubular mobile states which are limited in road. Then, nodes moves fast, network topology changes frequently, the relationship among nodes becomes unstable. Aiming at the network congestion problem exists in commonly used GPSR routing protocols of current vehicular ad hoc networks, this paper proposed an improved project of GPSR routing protocol which controls network congestion based on the buffer of nodes. Performance simulation for relevant parameters is tested on platform NS2. From the results of the analysis, the enhanced GPSR protocol in vehicle's environment has lower packet loss rate and less time delay than the traditional GPSR protocol.
机译:车辆临时网络技术是智能运输系统的重要组成部分,具有广泛的发展和应用前景。路由协议是车辆临时网络的关键技术,并且在很大程度上决定了车辆网络通信系统的性能。由于多种原因,车辆ad hoc网络(VANET)对路由协议提供了很大的要求:首先,车辆节点进入在道路上有限的管状移动状态。然后,节点移动快速,网络拓扑经常发生变化,节点之间的关系变得不稳定。本文提出了当前车辆临时网络的常用GPSR路由协议存在于网络拥塞问题,提出了一种基于节点缓冲区控制网络拥塞的GPSR路由协议的改进项目。在平台NS2上测试相关参数的性能模拟。从分析结果中,车辆环境中增强的GPSR协议具有较低的数据包丢失率和比传统GPSR协议的时间延迟更少。

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