Design and Simulation Study of Safety Communication Protocol in CBTC
Huang Hai · Jisuanji gongcheng · 2012
This paper designs a safety-critical communication protocol according to the European standard EN50159 for the communication among the subsystems of Communication Based Train Control(CBTC).The protocol is connection-oriented and adopts many safety measures such as sequence number,timeout,safety code and so on.When transmission errors occur,the protocol makes the system fall into the safe state.In the end,the real-time response of the protocol is analyzed with the help of OPNET.Simulation results show that the real-time response of the protocol can well satisfy the requirements of CBTC application.Through the injection of a link failure during the simulation,the fail-safe function of the protocol is verified.So the safety-critical communication protocol designed is good enough to be applied in CBTC.