• Title, Summary, Keyword: Standard Communication Protocol

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Safety Characteristics Analysis of Korean Standard Communication Protocol for Railway Signalling (열차제어용 표준 통신 프로토콜의 안전 특성 분석 및 평가)

  • Hwang, Jong-Gyu;Jo, Hyun-Jeong;Lee, Jae-Ho
    • Journal of the Korean Society for Railway
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    • v.10 no.3
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    • pp.365-371
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    • 2007
  • The communication protocol for interface among railway signalling systems is designed and established as national standard in Korean from a few years ago. So the communication link for information transmission among railway signalling system can be a good example of application of this standard. Communication protocol which is standardized among Korean railway signalling is considered to apply information transmission. And we confirmed there is no the states of deadlock of livelock in std. protocol which is applied formal verification which is one of the analytic method for inspection of safety characteristics in the design course of protocol. But the safety of protocol has to necessarily accomplish this normal analysis approach about satisfying requirement matters with such this analytic approach. In this paper we analyzed the safety characteristics of standard protocol for Korean Railway signalling through the requirement matters for safety transmission of railway transmission system which is required in international standard. So through this study we confirm whether it satisfies safety requirement matters of the level which require in international standard and tried to confirm whether standard protocol has enough safety character in the real railway field.

Safety Characteristics Analysis of Korean Std. Protocol for Railway Signalling according to IEC 62280 (IEC 62280을 통한 철도신호용 표준 통신프로토콜의 안전특성 분석)

  • Hwnag, Jong-Gyu;Jo, Hyun-Jeong;Yoon, Yong-Ki;Kim, Yong-Gyu
    • Proceedings of the KSR Conference
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    • pp.863-869
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    • 2006
  • The existing Europe Standard, EN 50159 with respect of safety of railway signalling communication protocol has been changed into International Standard, IEC 62280. This Standard presents the requirement for safe communication between safety-related devices which connects with transmission system, there are both closed and open transmission system. Regardless of this international Standards, the communication protocol for interface between CTC communication server and external facilities has been standardized several years ago in our country, so this is applied to integrated CTC system in KORAIL. Two Standards are currently standardized as a protocol between CTC and external facilities, these standard protocols are also required high level safety as a communication link which is transmitted vital control information in common with the train control system. For that reason, we have made analysis of requirement for the safe transmission required by international standard. Under this analysis, we have studied safety features of communication protocol applying to our standard. In other words, we have researched that how many the requirement from international standard for safe transmission is reflected in domestic standard protocol, and also whether our standard makes sure of safety enough or not.

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A Secure AIS Protocol Suggestion with Analyses of the Standard AIS Protocol (표준 AIS 프로토콜 분석을 통한 보안 AIS 프로토콜 제안)

  • Lee, Jung-Su;Heo, Ouk;Kim, Jae-Hwan;Chung, Sung-Wook
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.9 no.1
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    • pp.49-57
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    • 2016
  • Recently, marine accidents such as the sinking accident Mongol freighter ship and the sinking accident of Sewol ferry in Jindo continuously happen. In order to decrease the number of these marine accidents, Korean ships are obliged to follow the AIS(Automatic Identification System) system. The AIS protocol includes all information for sailing ships. However, the standard AIS protocol does not provide any security function, In addition, it is possible to hijack the standard AIS protocol in case of using a satellite communication device called FUNcuve Dongle Pro+. Therefore, this paper analyzes weak points of the security in the standard AIS protocol. Furthermore, this paper ensures reliability by marking the MAC Address of sender and receiver for secure communication and suggests the protocol that can securely send data, using the VPN Tunnelling method. Therefore, the suggested AIS protocol provides the secure communication to the AIS protocol and protect the messages in the AIS protocol, which can serve safe voyages by decreasing the marine accidents.

Performance Analysis of Data Link Protocol for Interface between EIS and LDTS (전자연동장치와 역정보전송장치간 인터페이스를 위한 데이터링크 프로토콜 성능해석)

  • Hwang, Jong-Gyu;Lee, Jae-Ho
    • Journal of the Korean Society for Railway
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    • v.6 no.2
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    • pp.135-141
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    • 2003
  • According to the computerization of railway signaling systems, the interface link between these signaling equipment is also replaced by digital communication channel, expecially communication link for interface between EIS and LDTS, but there are some problems in the present state of railway signaling. First of all, different communication protocol is applied to interface between above two signaling equipment although they have same functions. The other is that the communication protocol currently used in railway field has some unreasonable points such as structure, formation of byte, error correction scheme and etc. To solve these problems, the standard communication protocol for railway signaling is designed. The structure of designed communication protocol and the results of performance analyses are represented in this paper. It will be expected the increase of safety, reliability and efficiency of maintenance of signaling system by using of the designed communication protocol for railway signaling.

The Study on the Design of the Function and Data Structure for Electronic Watt-Hour Meters (원격검침을 위한 전자식 전력량계 기능과 데이터구조 설계에 관한 연구)

  • Jang, M.J.;Hyun, D.H.;Cho, S.K.
    • Proceedings of the KIEE Conference
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    • pp.308-310
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    • 2001
  • With the development of Computer & Communication Technology, nowadays many people are interested in remote metering, and many vendors are suggesting various remote metering solutions. KEPCO (Korea Electric Power Corporation) adopts some of these to some customers who uses a lot of electric power, also continues researching them. But, currently used electronic watt-hour meters vary in terms of communication protocol and data structure by the vendors. So we have to know each vendor's communication protocol and data structure to construct a remote metering system, or to find problems in it. But that's impossible to know each vendor's protocol and data structure because they are reluctant to tell those to outside the company. To solve these problems and to make a much more cost-effective metering system, KEPCO developed standard communication protocol between meters and PC (or metering server), and defined standard functions and data structure which can be used by everyone easily. Those developments support standard interface for every vendors' meters. And Those will be adopted by KEPCO for a part of a new metering standard for electronic watt-hour meters.

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The Implementation of EIA 709.1 Standard Protocol Based Home Control System Architecture having Network Configuration Function

  • Lee, Chang-Eun;Park, June-Hee;Son, Young-Sung;Moon, Kyeung-Deok
    • Proceedings of the IEEK Conference
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    • pp.560-563
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    • 2002
  • This paper proposes a home control system architecture that have network configuration function. The proposed home control system architecture is implemented with partly hardware and software. For implementation of this system architecture, we developed ECONICS which is home automation controller. ECONICS consists of main board and communication modem. This communication modem supply the power line communication. The physical layer and the MAC layer software of EIA 709.1 standard protocol are implemented in communication modem. The upper layer software of EIA 709.1 standard protocol and home configuration software for home network installation, management, diagnostics, control and monitoring are implemented in main board of ECONICS. We verified the commercial feasibility of the proposed system through the home network configuration and operation. As a result, we have concluded that the proposed home control system architecture provides all the key function necessary to easily manage and control home network nodes.

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A Design of Distributed Multimedia Database Communication Protocol for Highspeed Multimedia Terminal (초고속 멀티미디어 단말기를 위한 분산 멀티미디어 데이터베이스 전송 프로토콜 설계)

  • 두길수;박정희;이신원;윤후병;김법균;황호전;안동언;정성종
    • Proceedings of the IEEK Conference
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    • pp.795-798
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    • 1999
  • To transmit multimedia information efficiently and use it in realtime, it needs a private multimedia terminal for service type. But multimedia information terminal was developped for of offered service type in case by case. Accordingly, general multimedia terminal have not been developed yet. Multimedia database structure and standard communication protocol must be designed first to develop the general multimedia terminal. Multimedia database structure needs to store the various multimedia information consistently and, standard communication protocol access the database transparently. In this paper, we design a multimedia database structure and communication protocol that are able to access the multimedia information on distributed database servers in the network.

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The Development of Vital Sign Web Viewer Systems using HL7 Protocol (HL7 프로토콜을 이용한 생체정보 웹 뷰어 시스템 개발)

  • Lim, Se-Jung;Kang, Ki-Woong;Seo, Jong-Joo;Kim, Gwang-Jun
    • The Journal of the Korea institute of electronic communication sciences
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    • v.2 no.2
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    • pp.123-128
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    • 2007
  • HL7 is well-Known standard protocol for text data generated in hospital information systems. Vital sign information web viewer systems is also the standard protocol for medical image and transfer. In order to embrace new technologies as telemedicine service, it is important to develope the standard protocol between different systems in the hospital, as well as the communication with external hospital systems. In this paper, we proposed integration method between vital sign web viewr systems and hospital information systems. Through the proper data exchange and modification of information management, HIS will offer better workflow to all hospital employee.

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The Development of Vital Sign Web Viewer Systems using HL7 Protocol (HL7 프로토콜을 이용한 생체정보 웹 뷰어 시스템 개발)

  • Lim, Se-Jung;Kang, Ki-Woong;Seo, Jong-Joo;Kim, Gwang-Jun
    • The Journal of the Korea institute of electronic communication sciences
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    • v.3 no.2
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    • pp.112-117
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    • 2008
  • HL7 is well-Known standard protocol for text data generated in hospital information systems. Vital sign information web viewer systems is also the standard protocol for medical image and transfer. In order to embrace new technologies as telemedicine service, it is important to develope the standard protocol between different systems in the hospital, as well as the communication with external hospital systems. In this paper, we proposed integration method between vital sign web viewr systems and hospital information systems. Through the proper data exchange and modification of information management, HIS will offer better work flow to all hospital employee.

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BACnet/ZigBee-based Lighting Control System (BACnet/ZigBee 프로토콜 기반의 조명제어시스템)

  • Chon, Y.J.;Park, T.J.;Park, D.K.;Hong, S.H.
    • Proceedings of the KIEE Conference
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    • pp.117-119
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    • 2006
  • BACnet(Building Automation and Control networks) is a standard data communication protocol designed specifically for building automation and control systems. BACnet provides five options for datalink layer protocols and these five datalink layer options can be applied with various transmission media. Recently wireless technology prevails in automation area. ZigBee is a standard protocol based on IEEE 802.15.4 for low-speed wireless communication network. In this study, we propose a BACnet/ZigBee model that uses ZigBee wireless technology in a BACnet communication network system as a wireless datalink layer protocol. We also applied this model to a lighting control system to evaluate the feasibility of proposed technology. The technology proposed in this paper can extend the application of BACnet not only for building automation but also for home automation by taking the advantages of ZigBee wireless communication technology in BACnet communication network systems.

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