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학술대회 Enhancement of Reliability and Availability for LTE-R based Train Control
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윤병식, 이숙진, 오상철, 최민석, 이성찬, 성동일
International Conference on Information and Communication Technology Convergence (ICTC) 2022, pp.2274-2276
22IH3100, 열차자동운전시스템 무선인프라 및 열차분리검지 검증, 윤병식
The reliability and availability of wireless train communication are extremely important in safe and efficient train control. In this paper, we present an LTE-Railway (LTE-R) communication characteristics and performance based on real-time measuring radio frequency condition in Korea Train eXpress (KTX) train field test. We propose handover optimization method for increasing reliability of LTE-R network. We also introduce redundant railway communication scheme using LTE-R and commercial LTE networks for increasing availability of wireless train control system. Both proposals are analyzed and verified using OPNET network simulation. It has been shown that 17% reduction of handover delay and 13 times reduction of packet loss rate compare to the legacy LTE-R network system.
KSP 제안 키워드
Field Test, Handover delay, Handover optimization, Increasing reliability, LTE network, LTE-Railway, Network system, Radio Frequency(RF), Real-Time, Reliability and Availability, Train control system