摘要
随着通信技术的迭代发展,基于CBTC的无线列车控制系统已逐步代替基于轨道电路的车地通信技术。其中,WLAN技术应用广泛。大连城市轨道交通中地铁1、2号线信号数据通信系统采用2.4 GHz频段的WLAN技术。近几年,随着我国无线网络的迅速普及、Wi-Fi的大量使用,对地铁1、2号线信号系统车地无线通信的稳定性带来了隐患。因此,大连地铁13号线在修建过程中,信号数据通信网络DCS系统采用了1.8 GHz专用频段的LTE-M技术。文章以此为切入点,对大连地铁13号线信号系统LTE-M技术方案进行详细介绍,同时通过对WLAN技术以及LTE技术对比分析,阐述LTE技术在轨道交通车地无线通信系统中具有的技术优势。
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.
作者
王文明
杜晓菲
万霞
Wang Wenming;Du Xiaofei;Wan Xia(Dalian Metro Operation Co.,Ltd.,Dalian 116000,China)
出处
《无线互联科技》
2024年第2期13-15,共3页
Wireless Internet Technology
