中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2017, Vol. 36 ›› Issue (1): 88-92.DOI: 10.3969/j.issn.1674-0696.2017.01.16

• 交通运输工程 • 上一篇    下一篇

车载自组网告警信息广播策略

曹文静,徐胜红   

  1. (海军航空工程学院控制工程系,山东烟台264001)
  • 收稿日期:2015-11-16 修回日期:2015-12-16 出版日期:2017-01-20 发布日期:2017-02-08
  • 作者简介:第一作者:曹文静(1975—),女,山东梁山人,副教授,博士,主要从事无线组网技术方面的研究。E-mail: caowenjing751215@sohu.com。
  • 基金资助:
    国家自然科学基金项目(61203168);中国博士后科学基金项目(2011M500156;2013T60922)

A Broadcasting Policy of Emergency Warning Message in Vehicular Ad-hoc Network

CAO Wenjing, XU Shenghong   

  1. (Control Engineering Department, Naval Aeronautical and Astronautical University, Yantai 264001, Shandong, P.R.China)
  • Received:2015-11-16 Revised:2015-12-16 Online:2017-01-20 Published:2017-02-08

摘要: 车辆可以通过车载自组网交换告警信息提高行驶安全,告警信息对传输的可靠性和实时性要求高。目前主要采用重复广播的方式来提高告警信息广播的可靠性,但缺乏对重复广播率的确定方法。基于将告警信息产生和广播的系统看作一个排队系统的思想,提出了一种基于车速的重复广播率计算方法,通过建立车速与告警信息产生量之间的关系模型;并限定告警信息传输延迟,建立了优化的告警信息重复广播率计算公式。实验结果表明:该计算方法能较好地均衡告警信息广播的可靠性和实时性,操作简单。

关键词: 交通工程, 车载自组网, 告警信息, 单跳广播, 重复广播策略

Abstract: Vehicle safety can be improved by communicating alarming messages in vehicular ad hoc network. High reliability and real-timeliness of warning messages transmission is required. Currently , the reliability of emergency messages transmission is guaranteed by repeated broadcast without calculating method for the message repeating rate. In current research, broadcast repeating rate per second was not discussed herein. A vehicular speed-based broadcast repeating ratio model is proposed based on the thought regarding warning information generation and the broadcasting system as a queuing system and by establishing a model on the relationship between vehicular speed and alarming information . The delayed transmission of the alarming information was limited and an calculation formula was worked out for calculation of optimized rate of repeated alarming. Experiment results showed that the method better strikes the balance between the reliability and real-timeliness of alarming information transmission by broadcast and the operation is easy.

Key words: traffic engineering, vehicular ad hoc network, emergency warning message, single-hop broadcasting, repeating broadcast policy

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