VANET-Cellular环境下安全消息广播中继选择方法研究

发布时间：2018-04-26 15:40

本文选题：VANET-cellular + 安全消息　；参考：《计算机学报》2017年04期

【摘要】：当目标区域距离广播源节点过远时,基于机会网络的车联网安全消息广播算法往往造成过高的传输时延,难以保证安全消息的QoS需求.广泛部署的蜂窝移动网络为安全消息广播提供了一种新思路.基于VANETcellular网络架构,该文提出了一种安全消息广播中继节点选择方法.通过一种改进的RTS/CTS交互,根据候选车辆的蜂窝网络信号强度及其增量、链路稳定度、信道质量、地理位置等参数选出最佳的广播中继节点,并通过该节点将安全消息传递给服务器,最终由服务器传递给目标区域.数值分析和实验仿真结果显示,该方法不过分依赖于车流密度,也不需要额外部署基础设施,同时能够快速、可靠地传递安全消息,减少车载网络中信息冗余,提高了网络资源利用率.
[Abstract]:When the target area is too far from the broadcast source node, the security message broadcast algorithm based on the opportunity network often results in too high transmission delay, so it is difficult to guarantee the QoS requirement of the security message. The widely deployed cellular mobile network provides a new idea for secure message broadcasting. Based on VANETcellular network architecture, this paper proposes a secure message broadcast relay node selection method. Through an improved RTS/CTS interaction, the best broadcast relay node is selected according to the signal strength and its increment, link stability, channel quality and geographical location of the candidate vehicle. The security message is delivered to the server through the node, and finally to the target area by the server. The results of numerical analysis and experimental simulation show that the proposed method does not rely too much on the traffic density, nor does it require additional deployment of infrastructure, and it can transmit security messages quickly and reliably, thus reducing the redundancy of information in the vehicle network. The utilization rate of network resources is improved.
【作者单位】：武汉大学计算机学院;武汉大学软件工程国家重点实验室;香港城市大学计算机科学系;
【基金】：国家自然科学基金(61272112,61472287) 中央高校基本科研业务费专项资金(2014211020202)资助~~
【分类号】：TN929.5;U495

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