• Title, Summary, Keyword: Railway Wireless Network

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A study of network mobility for internet service in railway system (철도에서 네트워크 이동성 적용 방안)

  • Cho, B.K.
    • Proceedings of the KIEE Conference
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    • pp.255-257
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    • 2004
  • The study for ubiquitous computing infra is proceeding actively, it make possible to use service and access network anywhere, anytime because of wire/wireless communication technology and progress of hardware. Domestically, study for the network mobility support technology which is the key technology for future ubiquitous computing realization have progressed, but that is insufficient. Especially, there is no study for independent mobility support study about railway wireless network. So, this study propose network mobility management technology for mobile network infra in railway and proper network model in train.

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A study of network mobility for internet service in railway system (철도에서 무선 네트워크 이동성 적용기술 연구)

  • Cho B. K.
    • Proceedings of the KSR Conference
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    • pp.1223-1228
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    • 2004
  • The study for ubiquitous computing infra is proceeding actively, it make possible to use service and access network anywhere, anytime because of wire/wireless communication technology and progress of hardware. Domestically, study for the network mobility support technology which is the key technology for future ubiquitous computing realization have progressed, but that is insufficient. Especially, there is no study for independent mobility support study about railway wireless network. So, this study propose network mobility management technology for mobile network infra in railway and proper network model in train.

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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.

Implementation of Mobile Hot-spot Network for Subway Wireless Backhaul Network (모바일 핫스팟 네트워크 기반의 도시철도 무선백홀망 구현)

  • Kim, Dongha;Kim, Ilgyu;Choi, Kyuhyoung
    • Journal of the Korean Society for Railway
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    • v.18 no.3
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    • pp.223-231
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    • 2015
  • This paper proposes a new wireless backhaul technology based on MHN(Mobile Hotspot Network) which uses a wide frequency band of millimeter wave to provide wideband Wi-Fi services for subway passengers. Performance analysis of MHN up and down links, based on data: up and down links structure analysis of physical layer and simulation study of the MHN wireless backhaul link model, show that the proposed MHN-based wireless backhaul network can transmit data at a 1.2Gbps data rate and provide Internet service 100 times faster than that of conventional WiBro-based wireless backhaul networks. These results indicate that the proposed MHN technology is appropriate for subway mobile networks.

A study of network mobility for internet service in railway system (열차에서 이동네트워크 적용 방안)

  • Cho, Bong-Kwan;Jung, Jae-Il
    • Proceedings of the KIEE Conference
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    • pp.241-243
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    • 2005
  • The study for ubiquitous computing infra is proceeding actively, it make possible to use service and access network anywhere, anytime because of wire/wireless communication technology and progress of hardware. Domestically, study for the network mobility support technology which is the key technology for future ubiquitous computing realization have progressed, but that is insufficient. Especially, there is no study for independent mobility support study about railway wireless network. So, this study propose network mobility management technology for mobile network infra in railway and proper network model in train.

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A study on the moving picture transmission method between the accident sites and control center (사고현장과 사령실간 화상전송기술에 관한 연구)

  • 장석각;조봉관
    • Proceedings of the KSR Conference
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    • pp.484-489
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    • 2002
  • Whenever the accidents occur in the railway areas, their prompt recovery is very important. The individual way has been used to resolve these accidents by direct visiting the site and reporting to others who cares for these cases. As a result, we are planning to operate the MTS (Moving picture Transmission System) for a timely information's transmission to the related peoples in the central control center by transforming the picture information on the accident-site to the digital information. The proposed system is not a transmission system using exclusive lines, but utilizing the existing railway computer network. We construct a network server device so that a dispatcher can easily connect with the server through the railway intranet. In some railway environments such as disturbed field situations and geographical condition(in tunnels and bridges, etc) building up the wired network is difficult. Solving this problem, we reviewed the wireless network. Finally we proposed the mixed wireless network that is able to cover the wired network. We then installed and tested the wired network and wireless network respectively in wayside of a railway field. Through the testing, we identified many detailed matters for some network construction approaches to the control room and many field device-connecting schemes. This research will contribute to minimize the number of staff dispatched to a disturbed field, decrease the accident recovery time and improve the quality of service to the passenger.

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Wireless sensor networks for underground railway applications: case studies in Prague and London

  • Bennett, Peter J.;Soga, Kenichi;Wassell, Ian;Fidler, Paul;Abe, Keita;Kobayashi, Yusuke;Vanicek, Martin
    • Smart Structures and Systems
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    • v.6 no.5_6
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    • pp.619-639
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    • 2010
  • There is increasing interest in using structural monitoring as a cost effective way of managing risks once an area of concern has been identified. However, it is challenging to deploy an effective, reliable, large-scale, long-term and real-time monitoring system in an underground railway environment (subway / metro). The use of wireless sensor technology allows for rapid deployment of a monitoring scheme and thus has significant potential benefits as the time available for access is often severely limited. This paper identifies the critical factors that should be considered in the design of a wireless sensor network, including the availability of electrical power and communications networks. Various issues facing underground deployment of wireless sensor networks will also be discussed, in particular for two field case studies involving networks deployed for structural monitoring in the Prague Metro and the London Underground. The paper describes the network design, the radio propagation, the network topology as well as the practical issues involved in deploying a wireless sensor network in these two tunnels.

The Investigation of the Configuration of Wireless Communication Network for Railway Application of Multimedia Information Service (열차에의 멀티미디어 정보서비스 제공을 위한 무선통신네트워크 구성에 대한 검토)

  • Choi, Kyu-Hyoung;Cho, Bong-Kwan
    • Proceedings of the KIEE Conference
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    • pp.233-234
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    • 2004
  • The study for ubiquitous computing infra is proceeding actively, it make possible to use service and access network anywhere, anytime because of wire/wireless communication technology and progress of hardware. Domestically, study for the network mobility support technology which is the key technology for future ubiquitous computing realization have progressed, but that is Insufficient. Especially, there is no study for independent mobility support study about railway wireless network. So, this study propose network mobility management technology for mobile network infra in railway and proper network model in train.

  • PDF

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.

Building up a Wireless Network Infrastructure for Rolling-Stock (철도차량에서의 무선인터넷 환경 구축)

  • Lee, Yong-Cheol;Kim, Dong-Il;Chun, Sang-Hun
    • Proceedings of the KSR Conference
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    • pp.850-856
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    • 2010
  • With skyrocketing number of people who use smartphone, the technology of wireless internet that is mobile-phone, Wi-Fi, Wibro, HSDPA has been developed remarkably. The environment that one can use wireless internet easily and inexpensively anywhere has been made. So, the customer of railway have needs and desire that could use the wireless internet network as travelling in rolling-stock. Although KTX, KTX-II and some subway agency has built-up wireless internet network and serviced it, it's closed infra and inconvenient environment has been criticized. So, we survey the wireless internet network that is serviced at present and the way to build wirelee internet infra to satisfy the needs of customers.

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