西延高铁交叉并线区段GSM-R网络覆盖方案

GSM-R Network Coverage Scheme for Crossing and Shared Sections of Xi'an-Yan'an HSR

西延高铁与既有普速包西铁路、郑西高铁存在交叉并线区段,在2个区段均需进行GSM-R网络覆盖规划。首先根据西延高铁设计标准,确定西延高铁GSM-R无线子系统网络采用单网交织覆盖方式,主要从覆盖方式及电平要求、基站容量计算等方面开展论证分析;从不同铁路列控等级出发,针对延安站交叉并线区段、郑西高铁交叉并线区段,制定相应的网络覆盖方案;对共小区基站开展实际测试,在设计速度350 km/h条件下,接收机天线输入端射频信号最小可用接收电平满足95%时间地点概率下,最小可用接收电平不小于-92 dBm的要求,可为类似复杂区段的GSM-R网络设计方案提供参考。

In light of the crossing and shared sections between Xi'an-Yan'an HSR and the existing Conventional Baotou-Xi'an Railway and Zhengzhou-Xi'an HSR,GSM-R network coverage planning is required in both sections.Firstly,according to the design standard of Xi'an-Yan'an HSR,its GSM-R wireless subsystem network adopts a single-network interleaved coverage mode.This paper carries out the demonstration and analysis mainly from the aspects of coverage mode,level requirements and base station capacity calculation.According to different railway train control levels,corresponding network coverage schemes are formulated for the crossing and shared sections of Yan'an Station and Zhengzhou-Xi'an HSR.The actual test is carried out on the co-cell base station.Under the design speed of 350 km/h,the minimum available receiving level of RF signal at the antenna input end of the receiver meets the requirement that the minimum available receiving level is not less than-92 dBm under a 95% time and place probability,which can provide a reference for GSM-R network design scheme in similar complex sections.