基于D2D技术的V2V中断模式的信息传输机制  

Information Transmission Mechanism of V2V Interrupt Mode Based on D2D Technology

作　　者：孙鉴 肖增辉 孙潇 张中山 SUN Jian;XIAO Zeng-hui;SUN Xiao;ZHANG Zhong-shan(School of Computer Science and Technology,Shandong University of Technology,Zibo 255000,China;School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]山东理工大学计算机科学与技术学院,淄博255000 [2]北京理工大学信息与电子学院,北京100081

出　　处：《科学技术与工程》2024年第2期622-630,共9页Science Technology and Engineering

基　　金：山东省自然科学基金面上项目(ZR2023MF111);国家自然科学基金(61431001);北京自然科学基金(L172026);山东理工大学创新训练项目(S2019104332363)。

摘　　要：针对车联网中节点高速移动性特点,以及信息传递低时延与可靠性高的需求,多网络融合已成为部署车联网架构的必然趋势。由于车联网的信息传递往往只需在一定范围内的车辆之间发生,将D2D技术的通信模式引入车联网中进行消息传输,在车辆的覆盖范围内联合完全自组网与混合车联网两种通信模式,提出了一种中断模式的信息传输机制,只有当车辆的行驶状态发生改变时才向其他车辆发送,其他时间只需一定时间间隔向其他车辆发送一个确认信息,以此来判断车辆是否仍处于保护圈内或链路是否通畅。仿真数据显示:该中断传输机制可以有效地提高互传信息的车辆数目,节省了信令开销从而避免网络堵塞,也提高了覆盖圈内所有节点的信道容量。Considering the high-speed mobility of nodes,the need for low latency and high reliability of information transmission in vehicular ad-hoc networks(VANET),multi-network convergence has become an inevitable trend in the deployment of VANET architecture.Since information transmission only needs to occur between vehicles within a certain range in VANET,D2D technology was introduced into the communication mode of VANET for message transmission,which fully combines the self-organizing and hybrid networks within the coverage range of vehicles.An interrupt mode information transmission mechanism was proposed,where unless the driving state of the vehicle changes,other vehicles are notified,and at other times,only a confirmation message is sent to other vehicles at certain intervals in order to determine whether the vehicle is still in the protection circle or whether the link is unblocked.Simulation results show that the transmission mechanism can effectively increase the number of vehicles that transmit information to each other,save signaling overhead in order to avoid network congestion,and also increase the channel capacity of all nodes in the coverage circle.

关 键 词：车联网 D2D技术 中断模式 信令开销 

分 类 号：TN925.1[电子电信—通信与信息系统]