基于CTCS2+ATO的市域铁路LTE移动通信业务承载解决方案研究

Research on LTE Mobile Communication Service Bearer Solution for Suburban Railway Based on CTCS2+ATO

对于部分市域铁路信号系统采用CTCS2+ATO制式、移动通信系统采用LTE制式的全新组合模式,有必要根据其车地无线通信业务需求,分析研究LTE集群调度通信实现方式、系统架构,以及实现调度命令、ATO信息、无线车次号校核信息传送等业务功能的解决方案。通过分析LTE系统集群调度通信的主流实现方式,根据市域铁路车地无线通信主要业务需求,对于正在建设的市域铁路推荐采用条件相对成熟的B-TrunC架构LTE系统。重点研究基于BTrunC架构的LTE系统实现行车相关调度通信业务的工作流程,市域铁路列车信号车载设备在自动折返情况下通信车载台同步换端、车次号与IP地址转换的解决方案,对此类型的市域铁路工程建设、列控系统车地安全信息传送和运营维护方面具有指导作用。

Some urban railway signal systems adopt the CTCS-2+ATO system,while mobile communication systems adopt the LTE system.It is necessary to analyze and study the realizing methods and system architecture of LTE trunking dispatch communication based on the new combination mode of train-ground wireless communication business requirements,as well as solutions to achieve dispatch commands,ATO information,wireless train number verification information transmission and other business functions.Main realizing methods of trunking communication of LTE system are analyzed,and the LTE based B-TrunC system with relatively mature conditions is recommended for the suburban railway under construction.Focusing on the work process of LTE system based on B-TrunC architecture to realize dispatching communication services,the solution of synchronous turn-back CIR in the case of automatic turn-back,and the conversion of train number and IP address are studied,which would guide the construction of urban railway engineering,security information transmission and operation and maintenance of train control system.