摘要
分析了车用自组织网络(VANETs)仿真工具的应用现状,讨论了将NS-3引入VANETs仿真领域的优势。针对VANETs的实际特点,研究了基于NS-3的VANETs仿真平台的构建方法与步骤。依据真实的车辆间通信环境,设计并实现了AODV和OLSR两种路由协议的网络仿真测试方案,并进一步分析了端到端平均时延、分组投递率、吞吐量和时延抖动4项网络性能参数。仿真结果表明,在VANETs应用场景当中,节点运动速度对网络性能的影响较大,而节点密度对网络性能的影响较小;OLSR协议的性能总体要优于AODV协议。
Application status of simulation tools in vehicular ad hoe networks was analyzed, and advantages of NS -3 applied to VANETs simulation field were discussed. According to VANETs actual characteristics, this paper researched the construction method and steps of VANETs simulation platform. Based on real circumstances of vehicles communication, networks simulation scheme on AODV and OISR routing protocols was designed and implemented. Furthermore, the paper analyzed four networks performance parameters, including average delay, packet delivery ratio, throughout and jitters. Simulation results indicate that moving speed of nodes has great influence on networks performance, and density of nodes has little influence on networks performance. OLSR protocol has better performance than AODV protocol.
出处
《微计算机应用》
2011年第11期20-27,共8页
Microcomputer Applications
基金
甘肃省自然科学基金项目(096RJZA088)
兰州市科技计划项目(2009-1-5)
关键词
车用自组织网络
网络性能
网络仿真
路由协议
NS-3
Vehicular Ad hoc Networks, network performance, network simulation, routing protocol, NS - 3
