V2X智能车联网的理论最大阻塞容量  

Theoretical Maximum Blocking Capacity of LTE-V2X Intelligent Vehicle Network

作　　者：李咏东 LI Yongdong

机构地区：[1]罗德与施瓦茨(中国)科技有限公司,广东广州510620

出　　处：《今日自动化》2024年第8期170-172,共3页Automation Today

摘　　要：2022年中国智能网联技术蓬勃发展,5G-V2X标准尚未冻结,LTE-V2X研究进入深入研究阶段。文章在为中国实际智能网联应用推导LTE-V2X车联网在汽车严重阻塞时的网络最大容量。文章引入分析需要应用到的LTE-V2X基本原理、协议层架构、物理层帧结构、经过验证的信号衰落模型、最大视距估算法、弗里斯传输方程等支撑论文文献,之后描述了需要解决的V2X系统容量问题,通过从LTE信道衰落角度、无线干扰角度、协议传输消息角度,分别分析Lte-V2X系统最大容量。针对无线干扰的结论,使用实际LTE的SINR测试结果验证其正确性。最后按照系统容量取决于各环节中最小瓶颈的原则,得到汽车阻塞半径为1m、3m、5m时,系统最大容量分别为2、12、0的结论。In 2022,China's smart network technology is booming,the 5G-V2X standard has not been frozen,and LTE-V2X research has entered the stage of in-depth research.The purpose of this paper is to deduce the maximum network capacity of LTE-V2X vehicle network under severe vehicle congestion for practical intelligent network connection applications in China.This paper firstly introduces and analyzes lTE-V2X basic principles,protocol layer architecture,physical layer frame structure,verified signal fading model,maximum line of view estimation method,Frith transmission equation and other supporting papers and literatures that need to be applied,and then describes the V2X system capacity problems that need to be solved.The maximum capacity of LTE-V2X system was analyzed from the Angle of LTE channel fading,wireless interference and protocol transmission message.For the conclusion of wireless interference,SINR test results of actual LTE are used to verify its correctness.Finally,according to the principle that the system capacity depends on the minimum bottleneck in each link,it is concluded that the maximum capacity of the system is 2,12 and 0 respectively when the vehicle blocking radius is 1m,3m and 5m.

关 键 词：LTE-V2X 系统最大容量 信道衰落 干扰 无线 

分 类 号：TH36[机械工程—机械制造及自动化]