面向安全应用消息QoS的接入协议研究

发布时间：2018-06-05 06:28

本文选题：车联网(IoV) + 多址接入　；参考：《计算机科学与探索》2017年12期

【摘要】：为了实现车联网安全应用消息的低时延高可靠传输,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。该协议采用TDMA技术实现,并同时考虑了协同感知信息(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。采用交通仿真软件SUMO和网络仿真软件OMNe T++相结合的,交通与网络仿真双向耦合、实时交互的车联网仿真平台Veins,对QoS-oriented TDMA协议进行了仿真实现和性能验证。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%。
[Abstract]:In order to realize the low delay and high reliability transmission of the security application message of the vehicle network, a multi access protocol (quality of service, QoS) based on time division multiple access (TDMA) is designed for QoS-oriented TDMA., which adopts TDMA technology, and the cooperative perception is considered simultaneously. Information (cooperative awareness message, CAM) and distributed environmental notification message (decentralized environmental notification message, DENM) two security application message transmission requirements. Using traffic simulation software SUMO and the network simulation software OMNe T++, interconnect and network simulation bi-directional coupling, real-time interactive vehicle networking imitation True platform Veins, the simulation implementation and performance verification of the QoS-oriented TDMA protocol. The simulation results show that the CAM transmission reliability is not obviously improved, but the QoS-oriented TDMA protocol improves the reliability of DENM transmission and reduces the CAM and DENM transmission delay. The QoS-oriented protocol is high speed scene compared with IEEE 802.11p protocol and In the urban scene, the CAM reception probability is reduced by 5.8% and 7.1%, the transmission delay is reduced by 11.4% and 12.8%, respectively. The receiving 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.
【作者单位】：西安建筑科技大学信息与控制工程学院;
【基金】：陕西省教育厅2017年专项科学研究计划No.17JK0464 校人才科技基金项目No.RC1339~~
【分类号】：U463.67;U495

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