Low-latency communication functions such as real-time transmission and reception of train operation information
5G Edge Cloud Application… Delay Reduction by Approximately 20% Compared to Normal
SK Telecom and Korea Railroad Research Institute are working on implementing ultra-low latency autonomous train service.
SK Telecom announced on the 24th that it succeeded in a low-latency communication test by applying 5G edge cloud and 5G quality optimization technologies to the '5G onboard communication device', a core technology for autonomous train driving developed by the Korea Railroad Research Institute.
The '5G onboard communication device' is a technology that transmits and receives operation information between trains in real time so that trains can secure a safe driving distance on their own, and requires stable, low-latency communication.
The Korea Railroad Research Institute developed a '5G onboard communication device' to utilize low-latency communication on railways, and implemented the low-latency communication function between trains using this device in SKT's '5G Edge Cloud'.
SKT and the Korea Railroad Research Institute implemented autonomous train communication situations at the Korea Railroad Research Institute’s comprehensive railway test track in Osong, North Chungcheong Province, and conducted a test of low-latency data transmission and reception between trains required for autonomous train driving.
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The '5G Edge Cloud' is located at the shortest path where 5G and the cloud meet, minimizing network delay. SKT reported that through tests, it confirmed that when 'SKT 5G Edge Cloud' is applied, delay is reduced by approximately 20% compared to general clouds.
Additionally, in tests to meet the end-to-end service delay requirements required for autonomous driving, delay quality optimization technology was additionally applied to the 5G base station near Osong Station, reducing the delay time by approximately 50% compared to before.
Kim Myeong-guk, head of SKT’s cloud business division, said, “The significance lies in the fact that we have proven that reliable, ultra-low latency services such as autonomous driving are possible through our edge cloud and 5G optimization.” He added, “We will continue to cooperate with various domestic and foreign partners to provide communications and edge clouds that are essential for the introduction of autonomous driving technologies such as trains, vehicles, ships, and robots.”
Han Seok-yoon, head of the Korea Railroad Research Institute, said, “Advanced railway countries are moving toward autonomous train systems that directly exchange necessary information between trains via wireless communication networks in train control technology,” and added, “We will make autonomous train systems that increase transport capacity and shorten operation intervals into the premium K-railway technology of the future.”
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