中文摘要：

安全通信协议是保证基于通信的列车运行控制系统中通信安全的主要因素,其性能分析具有重要意义。针对基于通信的列车运行控制系统安全通信协议,选择分层赋时有色Petri网（CPN）对其进行研究,建立状态转换模型与包含数据延时和信道故障的模型,通过改变数据延时的概率和信道无故障的概率,对安全通信协议的稳定性和失效率进行仿真,仿真结果对安全通信协议的设计有一定的参考意义,用概率论与数理统计知识对仿真结果进行分析,分析结果体现数据延时和信道故障是如何影响安全通信协议的性能的。分析结果表明基于通信的列车运行控制系统安全通信协议是合理的。

英文摘要：

As the safety communication protocol is a main factor affecting the safety of communication in Communication Based Train Control system, its performance analysis is of great significance to the train control system. In response to the safety communication protocol, a study was conducted using the hierarchical timed Colored Petri Net （CPN） to establish the model of the protocol, including the model of state transition and the models with time delay and channel failure. By changing the probability of the data delay and the probability of no channel failure, the stability and failure rate of the safety communication protocol were simulated. The simulation results could provide certain reference for the development of safety communication protocol. Finally, the simulation results were analyzed with the theory of probability and mathematical statistics. Showing how the data delay and the channel failure affected the performance of the safety communication protocol, the analysis results proved the rationality of the safety communication protocol of the communication based on train control system.