Chinzorig Tsogtbayar, Hyoungseok Kang, Jongwoo Lee and Tsevelsuren Boldbaatar
International Journal of Railway, vol. 9, no. 2, pp.36-40, 2016

Abstract : TETRA communication system is very versatile system which can transmit voice + data and packet data optimized.Direct mode operation permits to connect between mobiles when mobile stain is out of coverage of networks. It can bemore secure communication channel for railway signaling systems. Railway signaling systems use many of wayside sig-nal equipment, which require many maintenance efforts and budget. Many railway authorities want to reduce and replacethe wayside equipment. Radio based signaling systems are one of candidate for replacing the conventional signaling sys-tems. The radio based signaling systems can replace track circuit and wayside signal. The radio systems permit to con-nect between control centers and trains. The radio systems have to ensure high quality of the connectivity more or equalto the existed track circuits. We studied the application of TETRA systems for railway radio systems for bridgingbetween train control centers and trains. We provide an operation scenario for radio based train control system to ensurethe safety require to the existed trains control system and satisfied the existed operational availability. We showed thedata transmission speed, maximum bit error rate, and data coding for the radio-based signal system using TETRA sys-tems.

Keyword : Train control system, radio-based, TETRA, safety, requirement