LTE技术在城市轨道交通信号系统中的应用分析

Analysis on the Application of LTE Technology in Urban Rail Transit Signal System

城市轨道交通信号系统对于保证列车正常运行和提高行车指挥效率具有重要的意义,而当前城市轨道交通信号系统中应用最多的就是LTE技术。本文从WLAN技术容易受到其他同频段设备的干扰、不支持高速移动以及城市轨道两侧的无线设备较多三个方面入手,对我国城市轨道交通信号系统无线通信的现状加以分析,并以此提出了相应的完善措施,希望能进一步提升LTE技术在城市轨道信号系统中的应用价值。

The signal system of urban rail transit is of great significance to ensure the normal operation of trains and improve the efficiency of driving command.LTE technology is the most widely used signal system in urban rail transit at present.In this paper,the current situation of wireless communication in urban rail transit signal system is analyzed from three aspects:WLAN technology is easily interfered by other devices in the same frequency band;high speed movement is not supported;wireless equipment on both sides of urban rail track is too much.The corresponding improvement measures are put forward in order to further enhance the application value of LTE technology in urban rail signal system.