铁路5G-R系统关键技术创新  

Innovation in Key Technologies of 5G-R System

作　　者：蔺伟 王芳 高尚勇 石波 LIN Wei;WANG Fang;GAO Shangyong;SHI Bo(Signal&Communication Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

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

出　　处：《中国铁路》2024年第7期104-113,共10页China Railway

基　　金：中国国家铁路集团有限公司科技研究开发计划项目(J2023G006);中国铁道科学研究院集团有限公司科研开发基金项目(2023YJ107)。

摘　　要：从我国铁路应用场景出发,分析通信业务需求和运用特点。围绕铁路特定需求,在通用架构基础上,5G-R系统增加了铁路专用功能网元。在系统组网方面,重点论述5G-R核心网和无线网组网创新性关键技术,以适配铁路管理机制和可靠性要求。分析5G-R全路共用设备在冗余方式、功能下沉、故障检测和倒换机制等方面的技术优化与创新;5G-R无线网组网采用同站址设备冗余方式,分析RRU冗余、BBU冗余以及PCI规划等方面的技术创新;阐述车地综合传输系统在减少车顶天线、业务与通信解耦、统一时空基准、节省投资等方面的优势。This paper examines the requirements and application characteristics of communication service based on the railway operation scenarios in China.Apart from general architecture,the 5G-R system also includes railway-specific functional network elements tailored to meet the unique requirements of railway.In terms of system networking,this paper delves into the innovative key technologies for 5G-R core network and wireless networking,focusing on enhancing reliability and to align with railway management mechanism.It evaluates the improvement and innovation in 5G-R nationwide-shared devices,in terms of redundancy mode,function downsizing,fault detection,and switching mechanism.The 5G-R wireless network adopts site equipment redundancy,and this paper analyzes the technological innovation in RRU redundancy,BBU redundancy and PCI planning.This paper also highlights the benefits of the train-ground integrated transmission system,including reduced roof antennas,decoupling between business and communication,unified spatial-temporal benchmarks,and cost savings.

关 键 词：智能高铁 铁路移动通信 5G-R 系统架构 组网技术 终端应用 车地综合传输 

分 类 号：U285[交通运输工程—交通信息工程及控制]