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Evaluation for the Introduction Impact of an Integrated Railway Wireless Network : A Case Study of the Wonju-Gangneung Rail Line

철도통합무선통신망 도입효과의 평가 -원주-강릉구간에 대한 사례를 중심으로-

  • 조한벽 (한국전자통신연구원, 스마트모빌리티연구부 지능형운전지원연구실) ;
  • 장정아 (아주대학교 TOD 기반 도시교통연구센터) ;
  • 조창희 (아주대학교 건설교통공학과) ;
  • 윤학선 (한국철도시설공단, 일반고속철도무선제어연구단)
  • Received : 2016.07.08
  • Accepted : 2016.08.20
  • Published : 2016.08.31

Abstract

This study performs an evaluation, using the economic feasibility analysis method, of the LTE based railway wireless networks (LTE-R) service that is planned to be used for the future railway networks in Korea. Its objectives are using the evaluation results and working to reflect the factors that lead to a maximization of benefits in designing an integrated railway wireless network. This study analyzes the impact of implementing an LTE-R on the railway networks, in contrast to the existing wireless network methods, e.g. VHR and TRS to new rail lines on an economic view. This results found that the benefit cost ratio is greater than 1.0 with a 10% contribution to benefits of the wireless network service in the case study on the Wonju-Gangneung rail line that will start operations in 2018; as a result, an ICT design is desired. For the introduction of an LTE-R service for the Wonju-Gangneung rail line, design specifications need to increase to benefits for each service, which will verify actual contributions and therefore result in an overall economic effect.

본 연구는 미래 철도망에서 이용될 예정인 LTE 기반 철도통합무선통신망 서비스의 효과에 대하여 경제성 분석방법을 이용한 평가를 수행한 것으로, 철도통합무선통신망을 설계할 때 편익을 극대화 하는 요소가 무엇인지 확인하고 이를 설계에 반영하도록 평가 결과를 활용하는 것을 목적으로 한다. 본 연구에서 경제적 효과 분석의 주요 대안으로 기존의 무선통신 방식(VHF로 구축할 경우와 TRS로 구축할 경우)을 신규노선에 설치하는 경우에 대비하여, LTE-R 방식의 무선통신 방식을 철도망에 설치할 경우에 대한 도입 효과를 분석한다. 주요 변수로는 직접 편익 항목별 편익기여율 변수를 이용하여 민감도 분석을 수행하였다. 사례 연구로 2018년 도입되는 원주-강릉 노선에서의 무선통신 서비스의 편익기여율이 10%이상 증대될 때 BCR이 1.0이상이 되기 때문에 이를 고려한 ICT 설계가 요구됨을 확인하였다. 향후 원주-강릉 노선에 LTE-R 통신 서비스 도입시, 세부 무선통신 서비스별 편익기여도를 높이기 위한 설계가 요구되고, 실제 구축 이후의 편익기여도에 대한 검증을 통하여 경제적 효과를 확인할 수 있을 것으로 예상된다.

Keywords

References

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