TD-LTE技术在CBTC车—地无线通信中的研究及应用

Research and Application of TD-LTE Technology in CBTC Vehicle-ground Wireless Communication

随着城市轨道交通的快速发展及用户需求的不断提高,地铁通信系统面临着机遇与挑战,文章以西安地铁2号线引入,分析了地铁通信数据传输存在的问题,提出在新建4号线中采用TD-LTE(Time Division Long Term Evolution,分时长期演进)技术实现CBTC(Communication Based Train Control System,基于通信的列车控制系统)中车-地通信数据的传输,并对其性能进行综合联调测试验证。

With the rapid development of urban rail transit and the continuous improvement of user demand,Metro communication system is facing opportunities and challenges.This paper introduces Xi'an Metro Line 2,analyzes the problems of metro communication data transmission,and TD-LTE(Time Division Long Term Evolution)technology is used in the new line 4 to realize the transmission of train-ground communication data in CBTC(Communication Based Train Control System),and its performance is verified by comprehensive joint commissioning test.