一种分布式车联网多跳信息广播协议

发布时间：2018-12-18 07:23

【摘要】：传统车联网通过蜂窝网进行信息传输,该传输方式延迟时间较长,难以应用于实时性高的报警信息的传输.然而,通过宽带无线网络的多跳广播方式,传输报警信息可以有效地减少延时.针对分布式车联网的特点,提出了基于地理位置、面向发送端的多跳交替广播协议AMBP(alternating multi-hop broadcast protocol).首先,根据邻居车辆信息表中记录的车辆节点信息,选择下一跳中继节点.然后,利用邻居车辆信息表中的信息,计算交替信息发送阈值.最后,根据报警信息数据帧长度与交替信息发送阈值的关系,采取不同的发送策略.实验结果表明,AMBP协议降低了丢包率,减小了多跳传输延迟和延迟抖动,适合应用在分布式车联网环境.
[Abstract]:The traditional vehicle network transfers information through cellular network, which has long delay time and is difficult to be applied to the transmission of alarm information with high real-time performance. However, the transmission of alarm information can effectively reduce the delay through the multi-hop broadcast mode of broadband wireless network. In view of the characteristics of distributed vehicle networking, this paper proposes a multi-hop alternative broadcast protocol (AMBP (alternating multi-hop broadcast protocol).) based on geographical location and oriented to the transmitter. First, according to the vehicle node information recorded in the neighbor vehicle information table, the next hop relay node is selected. Then, using the information in the neighbor vehicle information table, the transmission threshold of alternating information is calculated. Finally, according to the relationship between the frame length of alarm data and the threshold of alternating information transmission, different sending strategies are adopted. Experimental results show that the AMBP protocol can reduce packet loss rate, multi-hop transmission delay and delay jitter, and is suitable for application in distributed vehicle networking environment.
【作者单位】：东北大学信息科学与工程学院;中国农业科学院农业信息研究所;
【基金】：国家自然科学基金资助项目(61101121) 国家高技术研究发展计划项目(2013AA102505) 辽宁省科技项目教育厅一般项目(L2013096)
【分类号】：TN929.5

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