车联网安全应用消息传输机制研究

发布时间：2018-06-22 10:36

本文选题：车联网 + 安全消息　；参考：《西安建筑科技大学》2017年硕士论文

【摘要】：近年来,智能交通系统的快速发展带动着车联网技术的不断进步,使之成为智能交通领域的研究热点。车联网中的安全应用消息与道路交通安全息息相关,具有严苛的低时延高可靠传输需求。为了实现车联网中不同安全应用消息低时延高可靠的传输需求,论文在对已有研究进行分析总结的基础上,设计了一种基于时分多址(Time Division Multiple Access,TDMA)面向安全应用消息服务质量(Quality of Service,QoS)的多址接入协议——QoS-oriented TDMA协议。该协议采用TDMA技术实现,并同时考虑了协同感知消息(Cooperative Awareness Message,CAM)和分布式环境通知消息(Decentralized Environmental Notification Message,DENM)两种安全应用消息的传输需求。仿真结果表明,CAM传输可靠性虽然没有明显改善,但是QoS oriented TDMA协议提高了DENM传输可靠性,并降低了CAM和DENM传输时延。与IEEE 802.11p协议相比,QoS-oriented TDMA协议中高速场景和市区场景中CAM接收概率分别降低了5.8%和7.1%,传输时延分别降低了11.4%和12.8%;DENM的接收概率分别提高了10.5%和12.9%,传输时延分别降低了13.3%和15.1%。为了进一步实现安全应用消息的低时延高可靠性传输,设计了一种基于DSRC/LTE面向安全应用消息传输的网络选择算法。该算法从安全应用消息传输QoS需求出发,综合考虑了安全应用消息传输QoS的多项参数指标,包括端到端时延,丢包率,传输速率。仿真结果表明,面向安全应用消息传输的网络选择算法可以根据安全应用消息传输的不同QoS需求,合理的分配网络资源。一方面,与仅使用QoS-oriented TDMA协议时相比,同时使用QoS-oriented TDMA协议和面向安全应用消息传输的网络选择算法的异构车联网在高速场景和市区场景中安全应用消息的接收概率分别提高了13.7%和10.4%,传输时延分别减少了8.6%和11.5%。另一方面,面向安全应用消息传输的网络选择算法在高速场景和市区场景中,与匹配博弈网络选择算法相比,安全应用消息的接收概率分别提高了11.6%和7.5%,传输时延分别减少了13.2%和15.3%。
[Abstract]:In recent years, the rapid development of intelligent transportation system (its) has led to the continuous progress of vehicle networking technology, making it a research hotspot in the field of intelligent transportation. The safety application information in vehicle networking is closely related to road traffic safety and has the strict demand of low delay and high reliability transmission. In order to realize the requirement of low delay and high reliability transmission of different security application messages in vehicle networking, this paper analyzes and summarizes the existing research. A QoS oriented TDMA protocol based on time Division multiple access (TDMA) for quality of Service (QoS) is proposed. The protocol is implemented by TDMA technology, and the transmission requirements of cooperative Awareness message and decentralized Environmental Notification message are considered. The simulation results show that the transmission reliability is not improved obviously, but the oriented TDMA protocol improves the transmission reliability of DENM and reduces the transmission delay of CAM and DENM. Compared with IEEE 802.11p protocol, the reception probability of CAM in QoS oriented TDMA protocol and urban scenario is reduced by 5.8% and 7.1%, the transmission delay is reduced by 11.4% and 12.8%, and the reception probability of DENM is increased by 10.5% and 12.9%, respectively, and the transmission delay is reduced by 13.3% and 15.1%, respectively. In order to realize the secure application message transmission with low delay and high reliability, a network selection algorithm based on DSRC / LTE for secure application message transmission is designed. Based on the QoS requirement of secure application message transmission, this algorithm considers several parameters of secure application message transmission QoS, including end-to-end delay, packet loss rate and transmission rate. Simulation results show that the network selection algorithm for secure application message transmission can reasonably allocate network resources according to different QoS requirements of secure application message transmission. On the one hand, compared with QoS-oriented TDMA protocols, At the same time, QoS oriented TDMA protocol and secure application message transmission oriented network selection algorithm are used to improve the probability of receiving secure application messages in high-speed and urban scenarios by 13.7% and 10.4%, respectively. The transmission delay is reduced by 8.6% and 11.5%, respectively. On the other hand, the network selection algorithm for secure application message transmission is compared with the matching game network selection algorithm in high-speed scene and urban scene. The probability of receiving secure application messages is increased by 11. 6% and 7. 5%, and the transmission delay is reduced by 13. 2% and 15. 3% respectively.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5;U495

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