LTE技术在城市轨道交通信号系统中的应用探讨

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

城市轨道交通有着大容量、高密度的客运要求,对列车控制系统尤其是无线通信有非常严格的要求。该文通过介绍城市轨道交通无线通信性能需求以及存在的问题,分析LTE系统的特点及其相较于WLAN的技术优势。LTE系统的高速率、低时延、抗干扰、高移动性能等特点都更满足城市轨道交通信号系统的需要。所以可以采用LTE技术作为车-地通信方案。

Urban rail transit has the requirements of large capacity and high density of passenger transport,and it has very strict requirements for train control system,especially for wireless communication.This paper introduces the performance requirements and existing problems of urban rail transit wireless communication,analyzes the characteristics of the LTE system and its technical advantages compared with WLAN.The characteristics of LTE system,such as high speed,low delay,anti-interference and high mobility,can meet the needs of urban rail transit s ignal s ystems.T herefore,LTE technology can be used a s a vehicle g round communication scheme.