Korea Railroad Research Institute Conducts LTE-R Interoperability Test on Busan–Gimhae Light Rail
2026-06-28 17:10
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en.Wedoany.com Reported - The Korea Railroad Research Institute (KRRI) conducted field application and interoperability tests of the railway-specific wireless integrated communication network (LTE-R) system on the Sasang–Gaya University section of the Busan–Gimhae Light Rail from the 8th to the 12th of this month.

Korea Railroad Research Institute officials testing LTE-R on the Busan–Gimhae Light Rail. [Photo=Korea Railroad Research Institute]

LTE-R, developed through the Ministry of Land, Infrastructure and Transport's national R&D project with KRRI as the lead research institution, is a wireless communication network specifically designed for railways. This system can be used for new construction and extension projects of light rail and urban railways, as well as for upgrading outdated communication systems.

LTE-R has been applied and is in operation on Seoul Metro Lines 2, 4, 5, and 7, which opened in 2021. It has been deployed and is in the testing phase on the Yangsan Line, scheduled to open at the end of this year. Additionally, the network is being deployed on Incheon Urban Railway Lines 1 and 2, with its application gradually expanding to all urban railway sectors in South Korea.

This network breaks away from traditional voice-centric communication methods, enabling artificial intelligence (AI) and large-capacity data transmission. By sharing train operation information, real-time video, and maintenance data with the control room, it enhances railway safety and operational efficiency.

This test verified the functions and performance of voice communication features (such as individual calls, group calls, area selective calls, talk group configuration, and emergency calls) and various railway operation services, including on-site broadcast messages and voice messages, designed to improve operational efficiency.

KRRI stated that the results of the interoperability verification for urban railway communication networks based on LTE-R will lay the foundation for the reliability and stability of the wireless communication infrastructure required for future 5G-R and AI-driven railway operations, as well as the expansion of video and data services.

Song Yong-su, the head of LTE-R certification and a principal researcher at KRRI, noted that based on the institute's internationally recognized certification capabilities in the railway communication field, efforts will be made to expand into international standardization and official evaluation qualifications related to AI technology applications in railways.

KRRI President Sagong Myeong stated that the application of AI and digital technologies in the railway sector has expanded significantly recently. The institute will strengthen collaboration with partner organizations and enhance its testing, inspection, and certification systems to ensure that its research achievements in railway communication can be more widely applied to domestic urban railways.

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