基于WLAN的CBTC系统中数据通信子系统的研究

摘要

基于通信的列车控制系统(CBTC)利用高精度的列车定位,双向连续、大容量的车——地数据通信,车载、地面的安全功能处理器实现的一种连续自动列车控制系统.数据通信系统(DCS)是CBTC系统的核心.目前的CBTC系统大多采用成熟的基于IEEE 802.11标准的无线局域网技术作为其数字通信传输系统,但是随着人们对列车控制系统的性能和信息服务多样化的需求不断提高,在基于WLAN的CBTC系统中也存在一些尚待解决的问题.%The communication based train controKCBTC )system is an advanced train control system,which has high accuracy of train locating and realizes a continuous automatic train control system. DCS system plays an important role in the information interaction between ground equipment and vehicle equipment in CBTC. Based on OPNET simulation console, this paper designs a simple DCS network, simulates its communication process,analyzes the simulation data of sending and receiving,evaluates the entire performance of the network, which can offer reference to designing and optimizing the DCS network.