ALL IP 기반 철도 신호 시스템 네트워크

Internet technologies have rapidly expanded into nearly all fields, including railway systems. In the railway sector, they are widely applied in areas such as passenger information, ticketing services, and operational information systems. However, in safety-critical domains such as interlocking system and Automatic Train Protection (ATP), the adoption of IP-based networks has been limited due to concerns over the reliability of Ethernet communication.To address these issues, this study employed network simulation tools that facilitate the modeling of network topology, throughput, queuing, and transmission delay. Specifically, we employed OMNeT++, an open-source simulation framework, together with the INET library, which provides comprehensive models for communication protocols, applications, and network components. In addition, to enhance reliability, we designed a loop network architecture that ensures redundant channels for packet transmission.