自适应紧急消息广播协议在VANET中的应用

Different Application-Self-Adaption Emergency Messages Broadcasting in VANET

中文关键词:  紧急消息  广播协议  段  自适应  车联网

英文关键词:emergency messages  broadcasting  segment  self-adaption  VANET

中文摘要:

      车联网VANET(vehicular ad hoc network)被认为是智能交通系统最有前景技术之一，能够提出不同的应用服务，其中安全预警是最为重要的应用。可靠、有效地广播紧急消息是实现安全预警的关键。为此，提出面向不同应用的自适应紧急消息广播DAEMB(different application-self-adaption emergency messages broadcasting )协议。DAEMB协议依据应用的不同特性，采用Reliable和Dissemination两种紧急消息传输模式，并利用非均匀化基于时间和距离的段(segment)策略选择转发节点。仿真结果表明，提出的DAEMB协议平均传输时延、吞时量和紧急消息传输成功率方面具有良好的性能。

英文摘要:

      Vehicular Ad Hoc Network (VANET) is considered to be the most promising intelligent transportation system technology,which puts forward the application of different services,where a major application of VANET is safety warning.Reliable and effective broadcast emergency messages are the key to implement security early warning.Therefore,the different application-self-adaption emergency messages broadcasting (DAEMB) protocol is proposed.DAEMB protocol adopts reliable and dissemination approach depending on the application.In addition,a non-uniform distance based and time based segmentation is proposed to select the forwarding node.Simulation results show that the proposed algorithm has good performance in terms of average transmission delay,throughput and emergency messages delivery success ratio.