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Architecture Design and Reliability Evaluation of a Novel Software-Defined Train Control System
Urban Rail Transit Pub Date : 2022-02-17 , DOI: 10.1007/s40864-022-00165-y
Ming Chang 1, 2 , Lei Zhang 1 , Nan Nan 3 , Dongxiu Ou 3
Affiliation  

Communication-based train control (CBTC) has been the prevailing technology of the urban transit signaling system. However, CBTC also faces a few issues to extend and maintain because of its complicated structure. This paper presents a novel urban transit signaling system architecture, software-defined train control (SDTC), which is based on cloud and high-speed wireless communication technology. The core functions of the proposed SDTC, including the onboard controller, are implemented in the cloud platform, with only sensors and input–output (IO) units remaining on the trackside and the train. Because of the scalable framework, the system function can be expanded according to the user’s demand, making signaling as a service possible. With warm standby server redundancy, SDTC has better reliability. Compared with the traditional CBTC architecture, the mean time between failures is improved by 39% by calculating typical project parameters by the Markov model based on some assumptions.



中文翻译:

一种新型软件定义列车控制系统的架构设计与可靠性评估

基于通信的列车控制(CBTC)一直是城市交通信号系统的主流技术。然而,由于其结构复杂,CBTC 也面临一些扩展和维护的问题。本文提出了一种基于云和高速无线通信技术的新型城市交通信号系统架构——软件定义列车控制(SDTC)。提议的 SDTC 的核心功能,包括车载控制器,在云平台中实现,只有传感器和输入输出 (IO) 单元保留在轨道边和火车上。由于架构的可扩展性,系统功能可以根据用户的需求进行扩展,使信令即服务成为可能。借助热备服务器冗余,SDTC 具有更好的可靠性。与传统的 CBTC 架构相比,

更新日期:2022-02-17
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