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首先提出了基于车载自组织网络技术的车路协同原型系统(IVICS),并通过二次开发,利用交通仿真软件Paramics进行大规模路网搭建、动态信号控制,以及微观交通行为的模拟;同时,采用网络仿真工具NS2对车载网络进行细粒度无线通信过程的模拟,并通过trace文件,分析得到网络通信的带宽、延迟、传输跳数、丢包率等性能参数;此外,结合数据库技术,实现了交通仿真模块与通信仿真模块间的数据传递与共享,构建了车路协同一体化仿真系统,可以完成大规模城市路网中车辆自组织网络的通信仿真与分析,为车路协同系统的实际部署提供原型验证方案。
First of all, IVICS is proposed based on vehicle self-organizing network technology. Through secondary development, traffic simulation software Paramics is used to carry out large-scale road network construction, dynamic signal control and microcosmic traffic behavior simulation. At the same time, The network simulation tool NS2 is used to simulate the process of fine-grained wireless communication in vehicle network and the performance parameters such as bandwidth, delay, number of transmission hops and packet loss rate are obtained through trace file. In addition, with the database technology, Traffic simulation module and communication simulation module data transfer and sharing between the construction of a car-road integration and simulation system can be completed in a large-scale urban road network in the vehicle ad hoc network simulation and analysis of the traffic for the actual deployment of road coordination system Provide prototype verification scheme.