Research on LTE-M technlogy planning of CBTC system in Dalian metro Line 13
With the iterative development of communication technology,CBTC based wireless train control systems have gradually replaced track circuit based train ground communication technology.Among them,WLAN technology is widely used.The signal data communication system of Metro Lines 1 and 2 in Dalian urban rail transit adopts WLAN technology in the 2.4 GHz frequency band.In recent years,with the rapid popularization of wireless networks in China,and the widespread use of Wi-Fi has brought hidden dangers to the stability of wireless communication between trains and ground in the signal system of Metro Lines 1 and 2.Therefore,during the construction of Dalian Metro Line 13,the signal data communication network DCS system adopted LTE-M technology in the 1.8 GHz dedicated frequency band.This article also takes this as the starting point to provide a detailed introduction to the LTE-M technical solution of the signal system of Dalian Metro Line 13,and compares and analyzes the applications of WLAN technology and LTE technology in the field of vehicle ground wireless communication.
万方数据
维普
