The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Handover Performance of LTE-R Networks

LTE-R 네트워크에서 핸드오버 성능

  • Kim, Young-Dong (Dept. of Electric Railway Convergence Science, Dongyang University)
  • 김영동 (동양대학교 철도전기융합학과)
  • Received : 2018.11.02
  • Accepted : 2018.12.15
  • Published : 2018.12.31
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Abstract

LTE-R(Long Term Evolution - Railway), as a mobile communication technology to support safety operation of train on high speed railway system, have to be equipped appropriately by hand-over method for high moving environment of train. In this paper, hand-over performance of LTE-R network, which is used in railway communication system, is analyzed and hand-over implementation condition is suggested with this analysis. The performance analysis of this study is carried out with computer simulation with NS(Network Simulator)-3. SINR(Signal to Interference and Noise Ratio) and RSRP(Reference Signal Received Power), and Data Rate is used for hand-over performance parameter.

고속철도 시스템에서 열차의 안전 운행을 지원하기 위해서 사용되는 이동통신기술로서 LTE-R(: Long Term Evolution-Railway)은 열차의 고속이동환경에 적합한 핸드오버기술을 갖추어야 한다. 본 논문에서는 철도통신시스템에서 사용되는 LTE-R 네트워크의 핸드오버 성능을 분석하고 이를 토대로 핸드오버 수행 조건을 제시한다. 성능 분석은 NS(: Network Simulator)-3를 기반으로 하는 컴퓨터 시뮬레이션을 사용하며 성능 파라미터로는 SINR(: Signal to Interference and Noise Ratio), RSRP(: Reference Signal Received Power) 및 데이터율을 사용한다.

Keywords

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그림 1. 체인 셀[3] Fig. 1 Chain cell[3]

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그림 2. LTE-R 네트워크 구조[3] Fig. 2 LTE-R network configuration[3]

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그림 3. LTE-R 핸드오버 개요 Fig. 3 LTE-R handover concept

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그림 4. X2 핸드오버 Fig. 4 X2 handover

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그림 5. LENA 모듈 Fig. 5 LENA module

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그림 6. 전체 SINR Fig. 6 All SNIR

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그림 7. 3K와 5K 규모 네트워크의 SINR Fig. 7 SINR for 3K and 5K size network

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그림 8. RSRP Fig. 8 RSRP

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그림 9. 데이터율 Fig. 9 Data rate

표 1. 이벤트-기반 트리거링 기준 Table 1. Event based triggering criteria

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표 2. 시뮬레이션 파라미터Table 2. Simulation parameters

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