CTCS3-300T型ATP启机GSM-R基站注册错选原因分析及对策措施

Cause Analysis and Countermeasures for Wrong Selection of GSM-R Base Station Registration During CTCS3-300T ATP Startup

在2条不同铁路GSM-R基站相距较近的情况下,ATP设备启机时容易发生车载MT电台错误选择相邻铁路的GSM-R基站注册,造成无线通信超时的情况。针对合杭高铁线含山南站错选GSM-R基站问题,通过分析MT电台小区选择逻辑、实验室仿真测试、数据记录仪历史数据分析,确认车载MT电台开机会注册到信号最强小区,由此确定车载MT电台错选GSM-R基站为地面通信侧原因造成。通过采取通信侧上调含山南GSM-R基站场强、延长交路避免在邻线有基站的高速铁路站场进行动车组换端2种措施,有效解决了该问题,从而最大程度减少对高铁运行的影响。

When GSM-R base stations of two different railways are close between each other,it is easy for the onboard Mobile Terminal(MT)to mistakenly select GSM-R base station of adjacent railway during ATP equipment start up,resulting in wireless communication timeout.In response to the issue of selecting the wrong GSM-R base station at Hanshan South Station on the Hefei-Hangzhou High-speed Line,by analyzing the logic of onboard MT cell selection,laboratory simulation testing,and historical data analysis,it is confirmed that the onboard MT can be registered to the cell with the strongest signal,thereby determining that the wrong selection of the GSM-R base station by the onboard MT is caused by the ground communication side.Two measures were put forward including both raising the GSM-R base station field strength at Hanshan South Station on the communication side and avoiding the exchange end of EMUs at high-speed railway stations with base stations on adjacent lines by extending the routing.These two measures effectively solved the problem of wrong selection of GSM-R base station registration by onboard MT during ATP equipment start up,thereby minimizing the impact on high-speed railway operation.