• Title/Summary/Keyword: 철도 무선통신망

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Comparison Study of Interoperability of Railway Wireless Communication Networks (철도 무선통신망 연동방안 비교)

  • Cho, Woong
    • The Journal of the Korea institute of electronic communication sciences
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    • v.11 no.8
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    • pp.729-734
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    • 2016
  • The current domestic railway wireless communication networks transmit and receive data using several communication schemes such as VHF, TRS-ASTRO, and TRS-TETRA depending on the specific region. Recently, LTE scheme has been adopting in railway wireless communication systems to provide various services and increase reliability. It is critical to support the network interoperability between the existing communication schemes and new communication scheme for seamless data transmission. In this paper, we propose two interoperability schemes in railway communications networks, i.e., network oriented scheme and terminal oriented scheme. We consider the operation scenario for each scheme and compare two interoperability schemes. The practical implementation issues are also discussed based on suggested schemes.

A Study on Integration Scheme of Wireless Communications in Railway Wireless Network (철도 무선통신망 연동 방안 연구)

  • Cho, Woong;Choi, Hyun-Kyun;Cho, Han-Byeog
    • The Journal of the Korea institute of electronic communication sciences
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    • v.10 no.6
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    • pp.659-664
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    • 2015
  • The current railway wireless network uses various communication scheme depending on the section of railway. Therefore, in the train, it is required a specific communication device for the corresponding communication scheme to communicate and exchange data with the control center. To enhance data rate and support various services, LTE-R scheme has been developed for the next generation railway communications. To use both the existing communication and LTE-R schemes, it is required an integration method for encompassing all communication schemes. In this paper, we overview existing railway communications and LTE-R scheme. Then, we develop a network integration method which can be applied by using one terminal in the train. In addition, implementation issues for the integration are also considered.

A Study of Wireless Communication Network Constructing Policy Plan for an Efficient Railroad System Infrastructure (효율적인 철도시스템을 위한 무선통신망 구축정책 방안연구)

  • Lee, Seungho;Kim, Sigion
    • Journal of the Korean Society for Railway
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    • v.16 no.4
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    • pp.262-271
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    • 2013
  • Wireless communication networks are recently taking an important role in railroad systems as railways now require high speed and high density operation with the aid of advanced information technology to improve maintenance efficiency and to handle passenger service growth. Train control systems are consequently changing from track circuitbased systems to communication-based systems. This paper analyses the role of wireless communication networks in recent railroad systems, reviews foreign cases, and then suggests a communication network constructing policy for increased transport capacity increase, securement of safety, and efficient train control.

Development of Interoperability Technology in Railway Wireless Communication Systems (철도 무선통신시스템 연동 기술 개발)

  • Cho, Woong;Cho, Han-Byeog
    • The Journal of the Korea institute of electronic communication sciences
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    • v.12 no.4
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    • pp.555-560
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    • 2017
  • Currently, railway wireless communication systems adopt several communication schemes depending on the specific region. To increase data rate and achieve high fidelity in railway wireless communication systems, LTE-R scheme has been developed. In this paper, We introduce interoperability technology which converges several railway communication systems including LTE-R. First, we consider two interoperability methods and their standardization. Some empirical test results of interoperability technology are also introduced. It is expected to provide seamless and statable railway communication environments by applying interoperability technologies to railway wireless communication systems.

LTE-R(철도무선통신망) 실용화 및 국가철도통신망 구축 계획

  • Yun, Hak-Seon;Park, Jong-Won;Yun, Yu-Sin;Seong, Dong-Il
    • Information and Communications Magazine
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    • v.33 no.3
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    • pp.66-73
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    • 2016
  • 본고에서는 미래창조과학부 공공통합망 주파수 (700MHz대역)를 사용하는 철도통합 무선통신망 (LTE-R)의 호남고속철도 익산~정읍간 시험선 구축을 통한 실용화 계획과 함께 국가 철도망 적용을 위한 노선별, 지역별 중장기 구축 계획과 최초로 사업화를 준비중인 원주-강릉 복선전철 시범사업에 대한 내용을 소개한다.

Development of Integrated Wireless Network for Railway (철도전용 통합무선망 개발)

  • Song, Yongsoo;Kim, Yong-Kyu;Baek, Jong-Hyen
    • Journal of the Korean Society for Railway
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    • v.16 no.6
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    • pp.551-557
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    • 2013
  • This research aims to conduct a study on the feasibility of the LTE communication method for developing a dedicated integrated railway wireless network. An empirical analysis was carried out by establishing a dedicated integrated railway wireless network in an approximately 12km section between Illo station and Daebul station on the Honam line. Korean wireless communication methods for railway safety are different depending on each line, which makes it difficult for railway workers to cooperate with. This causes various problems. There is the ever-present risk of accidents due to call disconnection between wireless communication systems, frequency interference from commercial networks, and crosstalk. This study verified the feasibility of the 4th generation communication system, LTE, over the dedicated integrated railway wireless network as a solution for the above mentioned problems. The result shows this communication system exceeded existing performance standards of Europe GSM-R in every test item despite the location constraint of train tracks on the base station establishment.

국내 공공망(Public Network)에서의 네트워크 공유 방안

  • An, Sang-Gwon;Park, Pyeong-Su;Park, Sang-Hun
    • Information and Communications Magazine
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    • v.33 no.3
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    • pp.46-52
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    • 2016
  • 통합공공용 주파수로 분배된LTE(Long Term Evolution) 718~728Mhz(상향) 및 773~783MHz(하향)에서 재난안전 통신망, 철도무선 통신망, 차세대 해상무선 통신망 등과 같은 LTE기반의 공공통신망(Public Network, 이하 공공망)이 상호 공존하여 사용하는 방안에 대하여 연구하였다. 두 개 이상의 복수의 LTE 네트워크가 동일 주파수를 사용하여 서비스하는 경우 통신 커버리지가 겹치는 영역에서의 간섭은 불가피하다. 셀 간 간섭에 의하여Mission Critical한 요구사항이 중요시되는 공공망에서의 품질 열화가 야기되며, 경우에 따라 심각한 상황을 초래할 수 있다. 본고에서는 국내 공공망의 현황을 살펴보고 네트워크 공유방식에 대한 기술 및 표준화 동향, 그리고 해외의 사례를 알아보았다. 국내 통합공공용 주파수에서 동일 주파수를 사용하게 될 공공망 간의 간섭을 최소화 하여 네트워크를 구축 및 연계를 위해서 개별 공공망간의 네트워크를 공유하는 방안을 고려하였다. 국내 공공망의 효율적인 네트워크 연계를 위해서는 개별 공공망의 서비스 특성과 내부 환경을 반영 할 수 있는 연계 방식이 추가적으로 필요하다.

The Operation Conditions of Domestic Railway Wireless Communication Network and Those Technical Trends (철도 무선통신 기술동향 및 국내 운용현황)

  • Kim, Bum-Gon
    • The Journal of the Korea institute of electronic communication sciences
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    • v.11 no.4
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    • pp.379-386
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    • 2016
  • As well as to operate a high-speed rail, our country with capability to produce high-speed train has developed a number of techniques, such as for a riding comfort improvement, automatic diagnosis for major electrical or mechanical parts, on board measurement for catenary systems and noise reduction of running rolling-stocks are still under development. In this paper, we describe the current status of operation technologies not only traditional railway wireless communication systems but also Long Term Evolution systems which would be deployed as soon as possible, like as in Europe, China and the United States. In addition, we produced the domestic wireless communication networks for railway which KORAIL Corp. has been operating and the schemes and the plans of HSR field test for the fourth generation mobile communication which should be enforced by national research and development.

Railway Communication Policy Proposal for Interoperability Implementation of Railroad Line on North-South Korean Railway (남북철도 선로분야 상호운영성 구축를 위한 철도통신정책 제안)

  • Park, Eun-Kyung
    • The Journal of the Korea institute of electronic communication sciences
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    • v.14 no.5
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    • pp.797-804
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    • 2019
  • The two Koreas agreed to pursue rail and road connections on September 19, 2018 in the Pyongyang Joint Declaration. In December 2018, they launched a joint investigation for the North Korean railway modernization project. The survey confirmed that the track condition is seriously aging so that it is impossible to operate, and the railway network is well connected to major cities. Therefore, it was reasonable to modernize the aging track of the existing railway network rather than construct a new railway network. This paper proposed the railway communication policy for the improvement of railway lines and the construction of the railway wireless network by analyzing the status of roadbeds and tracks in order to enhance interoperability for the inter-Korean railway connection and safety for preventing the railway accidents.