TD-LTE宽带集群技术在城市轨道交通中的应用

通过分析城市轨道交通无线通信系统的现状和目前方案存在的问题，提出使用TD-LTE宽带集群技术承载轨道交通综合业务，并给出设计方案架构。通过与目前技术的对比，得出TD-LTE方案技术上的优势，并对车地无线网络多业务融合中关键的TD-LTE需求进行分析。从传输等级、传输时延和丢包率等指标入手，对TD-LTE技术应用于CBTC车地通信的可行性进行分析，得出结论：TD-LTE方案具备统一承载轨道交通综合业务的能力，应用在轨道交通行业具备较大可行性。

Application of TD-LTE Broadband Cluster Technology in Urban Rail Transit

This paper introduces the present situation of the wireless communication system of urban rail transit and the existing problems of the current scheme, and proposes the use of TD-LTE broadband cluster technology integrated services with the scheme architecture given. the advantages of TD-LTE scheme are given by comparison with the present technology, and the key TD-LTE requirement in the multi-service integration of the train-ground wireless network is analyzed. From the transmission level, transmission delay and packet loss rate, the feasibility of the application of the TD-LTE technology in the train-ground communication of CBTC is discussed. It is concluded that the TD-LTE scheme is capable of the integrated services of urban rail transit.