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http://dx.doi.org/10.5762/KAIS.2020.21.9.1

Analysis on Radio Communication Characteristics of LTE Railway Network  

Yoon, Byungsik (Moving Wireless Network Research Section, ETRI)
Lee, Sook-Jin (Moving Wireless Network Research Section, ETRI)
Kim, Dong Joon (Technology Research Division, Korea Rail Network Authority)
Sung, Dong Il (Technology Research Division, Korea Rail Network Authority)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.9, 2020 , pp. 1-8 More about this Journal
Abstract
The Ministry of Land, Infrastructure and Transport of Korea has been trying to spread integrated railway communication network technologies based on a major railway policy since 2012. As a result, the world's first commercial Long-Term Evolution - Railway (LTE-R) network was established on the Gangneung line (Manjong station - Gangneung station) and has been commercially operating as a railway communication system since 2017. Special function and performance requirements are needed for safe and efficient railway operations, such as group calls, emergency calls, functional addressing, and train control based on wireless communications. In this paper, we present functional and performance railway communications requirements that are based on European wireless railway communications systems. In addition, we measured communications characteristics and performance using a KTX field test on the Gangneung line to analyze the validity and reliability of the LTE-R network. Although the average Radio Frequency (RF) conditions were satisfied in the requirements, we found sudden communications quality degradation, such as Radio Link Failure (RLF) in some railway sections. We propose a way to improve performance and network installations based on in-depth analysis of LTE-R communications field-test results.
Keywords
LTE-R; Railway Communication; Train Communication; Wireless Train Control; GSM-R;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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