To ensure the consistency of physical clocks or logical clocks for the signaling system of suburban railway and improve the reliability of time back-tracking,this paper takes Shanghai Suburban Railway as the research object,provides the background information of Shanghai Suburban Railway,and introduces the current clock synchronization technologies and mainstream signaling clock synchronization schemes.After analysis and summarization,it adopts the advantages of various schemes,proposes a clock synchronization scheme suitable for Shanghai Suburban Railway,and provides a detailed description of various subsystems of the proposed scheme.
suburban railwayclock synchronizationtrack-train communication