铁路5G-R系统不同MIMO基站工程应用分析  

Analysis of Engineering Applications of Different MIMO Base Stations in Railway 5G-R System

作　　者：王芳 吴宇 李雪 代赛[4] WANG Fang;WU Yu;LI Xue;DAI Sai

机构地区：[1]中国铁道科学研究院集团有限公司通信信号研究所,北京100081 [2]中国铁路北京局集团有限公司,北京100860 [3]北京全路通信信号研究设计院集团有限公司,北京100070 [4]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《铁道通信信号》2024年第7期1-7,共7页Railway Signalling & Communication

基　　金：中国铁道科学研究院集团有限公司科研项目(2023YJ107)。

摘　　要：为分析5G-R系统不同多输入多输出(MIMO)基站在工程中的应用情况,实现5G-R系统基站的谱系化,对5G在2.1 GHz频段频分双工制式8T8R基站及终端产业链的发展情况进行调研,分析MIMO多天线阵列技术,从4个方面简明扼要地概括MIMO多天线阵列带来的增益。针对铁路正线及站场两类典型场景,提出不同MIMO基站的选择建议。对于铁路正线开阔区段,从设备安装方式、基站间距、无线组网方式、设备价格、既有GSM-R站址的重复利用、工程造价等方面,对不同MIMO基站进行对比分析;对于铁路正线隧道区段,从不同MIMO基站的覆盖能力、安装附件、安装空间等方面进行分析和对比。提出的8T8R基站与4T4R基站在新建线、既有线、隧道区段、站场等不同场景下的运用建议,对于促进5G-R系统基站的统型具有参考意义,并可为后续5G-R系统现场试验及工程部署提供借鉴。To analyze the application of different Multiple Input Multiple Output(MIMO)base stations of 5G-R systems in engineering scenarios and realize the lineage base stations in 5G-R system,the development of the industrial chain of 8T8R base stations and terminals in the 2.1 GHz frequency band Frequency Division Duplex(FDD)mode of 5G is investigated.It analyzed MIMO multi-antenna array technology and succinctly summarized the gains brought by MIMO multiantenna arrays from four aspects.Specifically addressing typical railway main line and station-yard scenarios,recommendations for selecting different MIMO base stations were proposed.For open sections of railway main lines,a comparative analysis is conducted on different MIMO base stations from aspects such as equipment installation method,base station spacing,wireless networking methods,equipment prices,reuse of existing GSM-R sites,and engineering costs.For tunnel sections of railway main lines,analysis and comparison were made from aspects of coverage capabilities,installation accessories,and installation space of different MIMO base stations.Recommendations for the application of 8T8R base stations and 4T4R base stations in different scenarios such as newly built lines,existing lines,tunnel sections,as well as stations and yards were proposed.These recommendations are of reference significance for promoting the standardization of 5G-R system base stations and can also serve as reference for subsequent field trials and engineering deployments of 5G-R systems.

关 键 词：铁路5G专用移动通信 基站 多输入多输出 工程应用 适用场景 

分 类 号：U285[交通运输工程—交通信息工程及控制]