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为了评估车联网无线链路传输数据业务的能力,提出结合车辆运动模式和数据业务传输特点的车联网链路传输性能评估模型.通过蒙特卡罗仿真统计得到链路剩余生命时间分布和数据业务传输时间分布,利用分布解析推导车联网链路成功传输概率,并建立链路传输性能评估模型.在基于Matlab/Simulink的TrueTime工具箱搭建的仿真平台上,使用模型评估常用Ad hoc路由协议基于距离矢量自组织和基于路由预测所建路径的传输性能.实验结果显示,链路性能模型能有效评估不同路由协议建立链路在不同移动速度下传输数据业务的能力.
In order to evaluate the capability of car networking wireless link to transmit data service, this paper proposes a car link network link transmission performance evaluation model which combines the characteristics of vehicle movement mode and data service transmission.The remaining life time distribution of link and data service transmission are obtained by Monte Carlo simulation Time distribution, using distributed analysis to deduce the probability of successful transmission of car network link, and establishing the evaluation model of link transmission performance.On the simulation platform built by TrueTime toolbox based on Matlab / Simulink, the model is used to evaluate the performance of common Ad hoc routing protocols based on distance vector Self-organizing and transmission performance based on route prediction.Experimental results show that the link performance model can effectively evaluate the ability of different routing protocols to establish the link to transmit data traffic at different mobility speeds.