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通过研究高速动车组车载信息车地间数据传输的应用环境和性能要求,提出适用于我国高速动车组车地间数据传输的通信协议设计方案。该协议是车载无线传输设备与地面信息采集处理系统之间用于信息交换的应用层协议,包括服务内容、通信环境的假设、通信协议中事件的定义、车地间交换信息的过程规则、车地间传输信息的报文格式等内容。介绍动车组车地间数据传输的内容分类、传输流程,动车组车地间数据传输协议的设计方案。
By studying the application environment and performance requirements of data transmission between vehicles in the high-speed EMUs, this paper proposes a communication protocol design which is suitable for the data transmission between the high-speed EMUs in China. This protocol is an application layer protocol for information exchange between vehicle-mounted wireless transmission equipment and ground information acquisition and processing system, including the assumption of service contents and communication environment, the definition of events in communication protocols, the process rules for exchanging information between vehicles and vehicles, The transmission format of the message between the message and so on. This paper introduces the content classification, transmission flow and design scheme of data transmission protocol between EMU car and ground.