摘要： 针对IEEE 802.11p协议移动性支持的评估需求,构建基于IEEE 802.11p协议的车联网应用场景,利用泊松过程描述车联网系统中的车辆到达模型。基于Veins平台搭建仿真场景并对仿真参数进行设置,从端到端延迟、丢包率、吞吐量方面测试并分析车流密度、车辆行驶速度对IEEE 802.11p性能的影响以及IEEE 802.11p应用于车联网环境的适用性。测试结果表明,车辆行驶速度对基于IEEE 802.11p协议的车联网性能影响较大,而车流密度对其性能影响较小,同时IEEE 802.11p协议适用于主动道路安全应用且有助于提高合作交通效率。
关键词:
车联网,
IEEE 802.11p协议,
移动性,
车流密度,
车辆行驶速度
Abstract: Focusing on the evaluation requirements of mobility support for the IEEE 802.11p protocol,this paper constructs a typical Internet of vehicles application scenario based on IEEE 802.11p and uses Poisson process to describe the vehicle arrival model in Internet of vehicles system.It uses Veins platform to build the simulation scene and sets the simulation parameters.From the end to end delay,packet loss rate and throughput,the influence of traffic density and vehicle running speed on the performance of IEEE 802.11p and the applicability of IEEE 802.11p in the Internet of vehicles environment are tested and analyzed.Test result shows that the vehicle running speed has a great influence on the Internet
of vehicles performance of IEEE 802.11p,but the traffic density has little influence on the performance of it.At the same time,the IEEE 802.11p protocol is applicable in active road safety and it helps improve the cooperative transport efficiency.
Key words:
Internet of vehicles,
IEEE 802.11p protocol,
mobility,
traffic density,
vehicle running speed
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