铁路5G专网与GSM-R语音业务过渡方案研究  

Study on Transition Solution to Voice Service from GSM-R and 5G-R

作　　者：孙鲁泉 单洪政 赵军 李明春 Sun Luquan;Shan Hongzheng;Zhao Jun;Li Mingchun

机构地区：[1]中国铁路西安局集团有限公司电务部,西安710054 [2]佳讯飞鸿(北京)智能科技研究院,北京100044 [3]中国铁路西安局集团有限公司概预算审查所,西安710054

出　　处：《铁道通信信号》2021年第10期75-80,共6页Railway Signalling & Communication

摘　　要：通过分析铁路5G宽带移动通信系统(5G-R)与既有铁路GSM-R系统语音业务的过渡需求、主要通信业务流程、系统间的互联互通接口等,提出"双模终端+双网络共存(DMDN)"的过渡解决方案。对不同网络覆盖场景进行分析,总结5G-R/GSM-R双网络共存过渡期间的终端网络驻留策略以及关键业务设备MCx的业务处理策略,详细介绍双模双网场景下的语音业务流程和接口,为铁路5G宽带移动通信系统的标准制定和规划建设提供技术参考。By analyzing the transition demand of voice service, main communication service process of the 5G mobile communication system for railway(5G-R) and the existing GSM-R and their interconnection interface, a transition solution of "dual-mode terminal + dualnetwork coexistence(DMDN)" is proposed. Based on the analysis of different network coverage scenarios, the implementation strategy of terminal network dwell and the service processing strategy of the key equipment MCx in the transition period of 5G-R/GSM-R dual network coexistence are summarized and the process and interface of voice services in dualmode dual network scenario are described in detail, which provides technical reference for standard formulation and planning and construction of 5G broadband mobile communication network for railway.

关 键 词：铁路 铁路5G宽带移动通信系统 铁路移动通信系统 语音业务 双模终端 互联互通 

分 类 号：U285.21[交通运输工程—交通信息工程及控制]