基于三相交通流理论的Ad-Hoc车辆网络对交通流的影响
Effect of Ad-Hoc Vehicular Network on Traffic Flow: Simulations in the Context of Three-Phase Traffic Theory
摘要：
车辆到车辆（或/和车辆到基础设施通信，也称为V2X通信）对交通流的影响，这是相关的ITS，进行了数值研究。为了使研究充分与实际测量的交通数据，无线车辆通信的测试平台的基础上，在三相交通理论的框架内的微观模型的开发和讨论。在这个试验平台中，车辆运动的交通流和分析的车辆通信信道接入的基础上IEEE 802.11机制，无线电传播建模，消息接收特性以及所有其他与ad-hoc网络的影响被集成到一个三相交通流模型。因此，车辆ad-hoc网络和交通流的模拟集成到一个单一的测试平台上，并同时执行。这使我们能够模拟ad-hoc网络的性能，以及不同的情况下，无线车辆通信对交通流的影响，在模拟时间，这可以与真正的特征时间在交通流。此外，该试验台使我们能够模拟合作车辆运动连同各种交通现象，如交通瓶颈，移动堵塞的出现，以及对交通流量的故障车辆的危险警告信息的可能影响。
英文摘要：
Effects of vehicle-to-vehicle (or/and vehicle-to-infrastructure communication, called also V2X communication)on traffic flow, which are relevant for ITS, are numerically studied. To make the study adequate with real measured traffic data, a testbed for wireless vehicle communication based on a microscopic model in the framework of three-phase traffic theory is developed and discussed. In this testbed, vehicle motion in traffic flow and analyses of a vehicle communication channel access based on IEEE 802.11 mechanisms, radio propagation modeling, message reception characteristics as well as all other effects associated with ad-hoc networks are integrated into a three-phase traffic flow model. Thus simulations of both vehicle ad-hoc network and traffic flow are integrated onto a single testbed and perform simultaneously. This allows us to make simulations of ad-hoc network performance as well as diverse scenarios of the effect of wireless vehicle communications on traffic flow during simulation times, which can be comparable with real characteristic times in traffic flow. In addition, the testbed allows us to simulate cooperative vehicle motion together with various traffic phenomena, like traffic breakdown at bottlenecks, moving jam emergence, and a possible effect of danger warning massages about the breakdown vehicle on traffic flow.
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