A Protocol for Metro Train Control Communication Network Based on TRDP

A protocol for train control communication network based on train real-time data protocol (TRDP) which includes connect/disconnect administration, data communication, data encryption and data decryption is proposed. Base on TRDP, this protocol gives the definition of connect/disconnect administration by user datagram protocol (UDP) to suit train control communication network, and archive encryption and decryption by SM4 to satisfy the real time, safety and availability requirements of control communication network.