关键词: 城市轨道交通, 车地通信, TD-LTE, 应用方案

Abstract:

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.

Key words: urban rail transit, train ground communication, TD LTE, application scheme