PERFORMANCE ANALYSIS OF ETHERNET-BASED PROTOCOL FOR TRAIN CONTROL SYSTEMS

초록

According to the computerization of railway signaling systems, the interface link between the signaling systems has been replaced by the digital communication channel. At the same time, the importance of the communication link is more pronounced than in the past. In this paper, new Ethernet-based communication protocol for Korean railway signaling has designed between CTC (Centralized Traffic Control) and SCADA (Supervisory Control and Data Acquisition) system, and the overview of designed protocol is briefly represented. And also this paper addresses an analysis of newly designed train control systems. Fame error rates of the data transmissions are calculated and compared for the two cases that the CTC/SCADA has an extra data transmission error control (CRC16) besides the inherent error control of the Ethernet (CRC32), and that the CTC/SCADA has no extra data transmission error control. With simulation results it has been verified that the extra data transmission error control (CRC16) contributes to lowering the frame error rate. It will be expected to increase the safety, reliability and efficiency of maintenance of the signaling systems by using the designed protocol for railway signaling in Korea.