车辆自组织网络中紧急信息的自适应广播机制研究

Research on adaptive emergency message broadcast control mechanism for VANET

道路交通的高速发展在创造巨大社会财富的同时,也令人类社会承受着交通事故带来的惨痛代价,为减少交通事故的危害,人们对智慧交通系统的研究日益重视。针对车流量多变化的城区道路交通环境,基于车辆自组织网络设计了一套信息广播机制,能将道路交通的紧急信息快速有效发布到危险区域内各车辆进行预警,以便驾驶人员能提前回避。仿真结果显示,该机制可靠度达到预期,并能有效地降低通信网络的负载。

The rapid development of road traffic brings not only the huge social wealth,but also the painful cost of traffic accidents. In order to reduce the harm of traffic accidents,people pay more attention to the research of intelligent transportation system（ ITS）. In this paper,a set of information broadcasting mechanism is designed based on the vehicular ad-hoc networks（ VANET） in the urban road traffic environment. Because the emergency information is released quickly and effectively,the drivers can avoid the dangerous area early. Simulation results show that the reliability of the mechanism can achieve the expected result,and it can reduce the load of the communication network effectively.