GSM-R核心网SGSN设备时钟故障案例排查及应急  

Investigation and Emergency Disposal of Fault Case of SGSN Equipment Clock in GSM-R Core Network

作　　者：李秀芳 Li Xiufang(Beijing Communication Depot,China Railway Beijing Group Co.,Ltd.,Beijing 100860,China)

机构地区：[1]中国铁路北京局集团有限公司北京通信段,北京100860

出　　处：《铁路通信信号工程技术》2020年第7期40-45,共6页Railway Signalling & Communication Engineering

摘　　要：通过分析GSM-R系统核心设备SGSN系统的时钟抽取出现异常情况,引发GSM-R无线系统PCU单元上报误码超门限等相关告警,进一步梳理SGSN系统时钟提取方式以及时钟抽取出现问题后的应急处置方式等.可以指导GSM-R核心网维护人员对GPRS通信网络的时钟设置、时钟提取、时钟日常维护以及时钟异常时的应急处置等方面有所了解和掌握,提高网络维护质量,最终使业务网络保持在一个高精度同步网络环境下运行,以保证业务网络系统运行可靠.This paper analyzes the abnormality of the clock extraction of SGSN system,the core device of GSM-R system,which triggers the PCU unit of GSM-R wireless system to report alarms such as bit errors exceeding the threshold,and further sorts out the clock extraction method of SGSN system and the emergency disposal method after the clock extraction problem occurs.This paper can guide the maintenance personnel of GSM-R core network to understand and master the clock setting,clock extraction,daily clock maintenance,and the emergency disposal of clock abnormalities in GPRS communication network,improve the quality of network maintenance,and ultimately keep the network in a high-precision synchronous network environment to ensure the reliable operation of the network system.

关 键 词：SGSN GPRS 帧失步 时钟同步 

分 类 号：U284.7[交通运输工程—交通信息工程及控制]