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Novel performance analysis model for VANET
Author(s): 
Pages: 109-113
Year: Issue:  1
Journal: Journal of Nanjing University of Posts and Telecommunications(Natural Science)

Keyword:  vehicular ad-hoc networkthroughputtransmission delaysemi-Markov process (SMP);
Abstract: 针对目前车载网(VANET)容量和传输时延估计的研究均为渐近分析,网络拓扑一般为一维,没有考虑具体的应用场景的问题,文中提出了一种用于估计基于交通安全应用场景和IEEE802.11p标准的二维车载网吞吐量容量和传输时延等性能指标的分析模型.该模型将每一个生成和广播安全信息数据包的节点用M/G/1队列模拟,并将IEEE 802.11p标准的带冲突避免的载波侦听多址访问(CSMA/CA)机制抽象为一个半马尔可夫过程.通过试位法求解模型参数,得出VANET性能指标的理论值.移动模型仿真软件BonnMotion和网络仿真器NS-3的仿真结果验证了分析模型理论值的正确性.
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