摘要
装备CTCS-3级列控车载设备的列车从CTCS-2级线路向CTCS-3级线路运行时需进行CTCS-2/3等级转换,在转换过程中车地建立无线通信连接时的列控数据交互,需经过物理层、链路层、传输层、安全层和应用层等,任何一步失败,都会导致列车无法转换到CTCS-3等级运行。从CTCS-2/3级等级转换失败案例中选取车载未发送SABME帧、车载发送多条SABME帧、RBC收到多条M155消息包等典型问题进行分析,分别从车载、网络和地面3个方面提出针对性的解决措施,可为类似问题的处理提供借鉴。
Trains equipped with CTCS-3 level train control onboard equipment need to undergo CTCS-2/3 level conversion when running from CTCS-2 level lines to CTCS-3 level lines.When the train-ground wireless communication connection is established for CTCS-2/3 level conversion,the train control data interaction needs to go through the physical layer,link layer,transmission layer,security layer and application layer.Any interaction failure in the interaction process will cause the train to fail to switch to CTCS-3 level operation.From the CTCS-2/3 level conversion failure cases,typical problems such as not sending SABME frames in the vehicle,sending multiple SABME frames in the vehicle,and RBC receiving multiple M155 message packets are selected for analysis.Targeted solutions are proposed from three aspects:vehicle,network,and ground,which can provide reference for the handling of similar problems.
出处
《铁道通信信号》
2023年第10期86-90,共5页
Railway Signalling & Communication
