Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A Study on the Establishment of Redundancy for Stable Operation of Integrated Railway Network (LTE-R)

철도통합무선망(LTE-R)의 안정적인 운영을 위한 이중화 구축 방안 연구

  • Pyo, Seung-ho (Department of information & communication, korea Polytechnic university)
  • 표승호 (한국산업기술대학교 정보통신학과)
  • Received : 2018.10.17
  • Accepted : 2019.02.01
  • Published : 2019.02.28
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Abstract

The LTE system decided to build an integrated disaster safety communication network in order to cope with disasters quickly after the April 16, 2014 disaster, and 333 agencies in 8 areas will build a unified disaster safety communication network. It plans to integrate LTE-R, a railway integrated wireless network, and LTE-M, a land-based communication network, in the 700MHz band. LTE-R, a wireless integrated network, and the Ministry of Land, Transport and Maritime Affairs, are currently using VHF and TRS, which are voice communication-oriented communication systems, in order to cope with demand for high-speed railway service, With this possible LTE-R, it is possible to provide advanced services such as radio-based train control and improve railway safety. The company plans to invest KRW 1.1 trillion in new routes to be launched in 2018 and the existing route to be improved in the future, and to build up all routes of general and high-speed railways to LTE-R by 2027.

LTE 시스템은 2014년 4월 16일 세월호 참사이후 정부는 재난 상황에 신속한 대처를 위하여 통합된 재난안전 통신망을 조속히 구축 하기로 결정하고 8대분야 333개 기관이 통합된 재난안전통신망을 구축 하기로 하였다(미래창조 과학부 재난망 기술 방식 선정완료). 주파수는 700MHz 대역으로 철도통합무선망인 LTE-R, 연근해통신망인 LTE-M을 통합 운용 하기로 하였다. 철도 무선통합망인 LTE-R과 관련 국토 교통부는 현재 음성통신 위주의 통신시스템인 VHF, TRS을 사용하고 있는 국내 철도통신시스템이 앞으로는 첨단화 지능화 되어가는 철도서비스 수요에 대응하기 위해 고속에서 대용량 정보전송이 가능한 LTE-R이 구축됨에 따라 무선기반 열차제어 등 첨단 서비스 제공이 가능해지고 철도안전 향상이 가능 하다. 2018년 이후 개통되는 신규 노선과 개량시기가 도래하는 기존 노선에 총 1조 1천억 원을 투입하여 2027년까지 일반 고속철도의 모든 노선을 LTE-R로 구축하는 것을 목표로 한다.

Keywords

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Fig. 1. Figure title –Tetra network configuration

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Fig. 2. Figure title –Current LTE-R network configuration

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Fig. 3. Figure title -DU redundancy configuration diagram

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Fig. 4. Figure title -RRU redundancy configuration diagram

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Fig. 5. Figure title-Optic path redundancy

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Fig. 6. Figure title -System Initial state

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Fig. 7. Figure title –EPC-A Fault

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Fig. 8. Figure title –DU-Main Fault

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Fig. 9. Figure title -RU-Main Fault

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Fig. 10. Figure title-EPC-A, DU-Main Fault)

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Fig. 11. Figure Title- Current LTE-R Network Configuration And Suggested LTE-R Network Configuration

Table 1. Table title (GSM-R Network requirements)

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Table 2. Table title(Future Railway Radio Communication Technology)

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Table 3. Table title(SIL Table)

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