高速铁路GSM-R无线网精细化设计研究  

Research on Fine Design of GSM-R Wireless Network for High-speed Railway

作　　者：杨帆 YANG Fan(China Railway Construction Electrification Bureau Group Co.Ltd.,Beijing 100043,China)

机构地区：[1]中国铁建电气化局集团有限公司,北京100043

出　　处：《铁道建筑技术》2021年第9期75-78,83,共5页Railway Construction Technology

基　　金：中国铁建电气化局集团有限公司科技研发计划项目(2019-17)。

摘　　要：GSM-R无线网基站和直放站在铁路区间用地中占有较大的比例,其选址、间距和场坪面积大小直接影响着铁路投资和建设、维护的便利性。从GSM-R无线网精细化设计角度总结了基站和直放站的选址原则,给出了几种典型的场坪布置图,比选了隧道口区域的无线覆盖方案,并通过链路预算论证了隧道口直放站的覆盖距离。为解决隧道内切换区切换和小区重选问题,提出了在切换区两端直放站加电桥的方案,并通过链路预算证明单处直放站故障仍能满足覆盖电平要求。GSM-R wireless network base station and repeater occupy a large proportion in railway section land,and their location,spacing and site area directly affect the convenience of railway investment,construction and maintenance.This paper summarizes the location principles of base station and repeater from the perspective of fine design of GSM-R wireless network,gives several typical site layout plans,compares and selects the wireless coverage scheme of tunnel entrance area,and demonstrates the coverage distance of repeater at tunnel entrance through link budget.In order to solve the problem of handover area switching and cell reselection in tunnel,a scheme of adding power bridge to repeaters at both ends of the switching area is proposed.The link budget proves that a single repeater fault can still meet the requirements of coverage level.

关 键 词：GSM-R 无线网络 基站选址 数字直放站 隧道覆盖 

分 类 号：U285[交通运输工程—交通信息工程及控制] TN929.5[交通运输工程—道路与铁道工程]