城市轨道交通CBTC车地无线通信快速切换算法研究

摘要

Train-ground wireless transmission in Communications-based Train Control (CBTC) System was implemented by using the Wireless Local Area Network (WLAN). When the train was running at a high speed, it was required that the handoff execution of wireless communication was fast and the handoff judgment was quick. The paper analyzed the application bottleneck of the traditional WLAN handoff used in the Urban Transit, and optimized the original handoff algorithm.%基于通信的列车控制(CBTC)系统通过应用无线局域网(WLAN)进行车地无线传输.列车在高速行驶时不仅要求无线通信切换执行快速、而且要求切换判决迅速,本文通过分析传统WLAN越区切换在城市轨道交通上应用的瓶颈,在原有越区切换算法的基础上对其进行了优化.