城市轨道交通LTE综合承载CBTC与专用无线集群业务

对宁波市轨道交通3号线及宁奉城际铁路工程采用的LTE(长期演进)技术综合承载CBTC(基于通信的列车控制)与专用无线集群信号系统的设计方案进行了介绍。这些设计方案主要包括LTE有线网络、LTE车-地无线通信、LTE时钟同步、业务隔离以及综合供电方案等,系在传统的LTE仅承载CBTC业务的基础上,考虑了同时承载集群业务。为进一步增强整个系统的可靠性、安全性,独创性地设计了基带处理单元的跨网连接、设备冗余配置、集群无线覆盖、轨旁漏缆安装高度以及跨专业供电的方案。

LTE Integrated Load CBTC and Special Wireless Trunk Communication System in Urban Rail Transit

The design scheme of LTE technology load CBTC and a special wireless trunk communication system used on the Phase 1 of Ningbo Line 3 and Ningbo-Fenghua Intercity Railway are mainly introduced. LTE wired network,LTE train-wayside wireless communication,LTE clock synchro-nization,business isolation and integrated power supply solu-tions are all considered in the design scheme based on the tra-ditional LTE,which only carries the CBTC service,while the design scheme takes into account the characteristics of wireless trunk communication service at the same time. In order to fur-ther enhance the reliability and security of the whole system, the scheme of BBU (building baseband unit)network connec-tion,redundant configuration of equipment, wireless coverage, installation height of the trackside leakage cable and the inte-grated power supply are designed with originality.