摘要
CTCS-3级列控系统无线超时问题是全路重点整治问题之一。基于现场统计,在小区切换阶段因通信质量不稳定导致的无线超时占比较高,数据链路层发送FRMR帧拆链引起的无线超时集中发生在小区切换阶段。本文对数据链路层FRMR帧触发场景进行了归纳,在深入理解CTCS-3级列控系统无线通信功能接口规范的基础上,给出改进思路,以改善无线超时问题。
The wireless communication timeout problem of CTCS-3 level train control system is one of the key rectification problems of China Railway.Based on on-site statistics,the occurrences of wireless communication timeout due to unstable communication quality account for a high proportion during the cell handover phase.Wireless communication timeout caused by the unlinking of FRMR frame sent by the data link layer often occurs during the cell handover phase.Various scenarios of FRMR frames triggering at the data link layer are summarized.And on the basis of an in-depth understanding of the specification of wireless communication function interface of the CTCS-3 train control system,improvement suggestions are put forward to improve the problem of wireless communication timeout.
作者
程亮
楚颖超
Cheng Liang;Chu Yingchao
出处
《铁道通信信号》
2021年第10期42-45,55,共5页
Railway Signalling & Communication
