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Rail signal device

Rail signal device

STU

Safety Transmission Unit

The STU provides the security and integrity of transmission of train control information(message) between on-board unit (KVC) and trackside unit (RBC), establishing a train control signal safety session and authenticating messages in the wireless interface section between the onboard unit (KVC) and the trackside unit (RBC).

Features

Ground-to-Ground STU

  • Safety Protocol (Subset-098)

    • Prevents message loss and duplication using Triple Time Stamp and Sequence Numbering

    • Ensures peer entity authentication and data integrity verification through the SL Layer of Subset-037

  • Redundant Network Support

    • Enhances system reliability with redundant link architecture ensuring stable RBC-to-RBC communication

Ground-to-Onboard STU

  • Safety Protocol (Subset-037)

    • Supports peer entity authentication and data integrity verification

  • Support for Domestic LTE-R Network in PS Mode

    • Facilitates packet transmission through the ALE (Application Layer Entity) protocol

Configuration

Impact

  • Facilitates research and development of KTCS-3 core technologies
  • Contributes to enhanced safety and reliability of next-generation transportation under KTCS-2