• Title/Summary/Keyword: Communication Protocol

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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.

A Study on Communication Protocol for Railway Signalling between LDTS and EIS equipments (역정보전송장치와 전자연동장치간 통신 프로토콜에 관한 연구)

  • 황종규;이재호;김종기;박영수
    • Proceedings of the KSR Conference
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    • pp.516-521
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    • 2002
  • According as railway signalling equipments are computerized recently, necessity of communication protocol for interface between these equipments is increasing, Therefore the research about communication protocol structure that is need according to computerization trend of these signalling goes, especially communication protocol structure for interface between LDTS(Local Data Transmission System) and EIS(Electronic Interlocking System). Analyzed existent protocols that is applied currently for interfaces between above two signalling for this research and also technology analysis of internal/external similar protocols and operator and maker's requirement. With these study finding plain in this paper, explained summary of communication protocol structure for interface between LDTS and EIS.

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Verification Test of Communication Protocol for Interface between EIS and LDTS (철도신호설비 상호간 정보전송을 위한 통신 프로토콜 검증시험)

  • 황종규;이재호;윤용기;신덕호
    • Journal of the Korean Society for Railway
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    • v.7 no.2
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    • pp.114-119
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    • 2004
  • According to the computerization of railway signalling systems. the communication protocol for interface between these systems are required. Therefore the new communication protocol for railway signaling system is required. Generally, there are two verification method for new designed protocol in the industrial and academic fields. One is the laboratory testing method which is very popular and general technique. In our research the comparison between existing and new designed protocol for signaling is described and the verification test results are also represented. From these laboratory test, we are verified the conformance of new designed protocol. Another method is verified by formal method. The format verification method is widely used at safety-critical system design but this approach is nor popular at verification communication protocol. However it is very important to verify the safety of new designed protocol for railway signaling system because signaling systems are very safety-critical systems. So, the methodology for formal verification of designed protocol is also reviews in this paper.

An Objected-Oriented Design and C++ Implementation of MiTS Communication Protocol Specified in State Transitions (상태 천이로 명세된 MiTS 통신 프로토콜의 객체지향 설계 및 C++ 구현)

  • Park, Hyu-Chan;Lee, Jang-Se;Jang, Kil-Woong
    • Journal of Advanced Marine Engineering and Technology
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    • v.34 no.1
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    • pp.147-153
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    • 2010
  • MiTS Communication Protocol is a standard for the integrated processing and exchange of information on shipboard. It is specified in the form of state transitions as normal communication protocols. The design and implementation of such communication protocol require huge amount effort and time. To alleviate such burden, some systematic methodologies need to be devised. The design pattern may be the most adoptable one. This paper describes an object-oriented design and C++ implementation of MiTS Communication Protocol by adopting such methodology.

Development of a Body Network System with GSEK/VDX Standards and CAN Protocol (OSEK/VDX 표준과 CAN 프로토콜을 사용한 차체 네트웍 시스템 개발)

  • 신민석;이우택;선우명호;한석영
    • Transactions of the Korean Society of Automotive Engineers
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    • v.10 no.4
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    • pp.175-180
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    • 2002
  • In order to satisfy the requirements of time reduction and cost saving for development of electronic control systems(ECU) in automotive industry, the applications of a standardized real-time operating system(RTOS) and a communication protocol to ECUs are increased. In this study, a body control module(BCM) that employs OSEK/VDX(open system and corresponding interfaces for automotive electronics/vehicle distributed executive) OS tour the RTOS and a controller area network(CAN) fur the communication protocol is designed, and the performances of the system are evaluated. The BCM controls doors, mirrors, and windows of the vehicle through the in-vehicle network. To identify all the transmitted and received control messages, a PC connected with the CAN communication protocol behaves as a CAN bus emulator. The control system based upon in-vehicle network improves the system stability and reduces the number of wiring harness. Furthermore it is easy to maintain and simple to add new features because the system is designed based on the standards of RTOS and communication protocol.

Performance Analysis and Validation of Railway Signalling Communication Protocol (철도신호용 통신 프로토콜 성능해석 및 검증)

  • Hwang Jong-Gyu;Lee Jae-Ho;Shin Duk-Ho
    • Proceedings of the KSR Conference
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    • pp.462-467
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    • 2003
  • According to the computerization of railway signalling system, necessity of communication protocol for interface between these equipments is increasing. Therefore the research on communication protocol structure that is required according to computerization trend of these signalling goes. In our research the existed protocol currently used was analyzed, and the simulation modeling for performance analysis is deduced. Based on this simulation model the performance analysis and comparison is carried out, and also validation test is executed about new suggested protocol.

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Performance Analysis and Testing of Railway Signalling Communication Protocol (열차제어용 통신프로토콜 구조분석 및 성능검증 시험)

  • Hwang, Jong-Gyu;Lee, Jae-Ho
    • Proceedings of the KIEE Conference
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    • pp.1318-1320
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    • 2003
  • According to the computerization of railway signalling system, necessity of communication protocol for interface between these equipments is increasing. Therefore the research on communication protocol structure that is required according to computerization trend of these signalling goes. In our research the existed protocol currently used was analyzed, and the simulation modeling for performance analysis is deduced. Based on this simulation model the performance analysis and comparison is carried out, and also validation test is executed about new designed protocol.

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A Study on Communication Protocol for Interface between CTC and EIS Equip (열차집중제어장치와 전자연동장치간 정보전송을 위한 통신 프로토콜 구조 연구)

  • Hwang, Jong-Gyu;Lee, Jae-Ho
    • Proceedings of the KIEE Conference
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    • pp.341-343
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    • 2002
  • According to the computerization of railway signalling equipments, the need of communication protocol for interface between these equipments is increasing. In this paper the research results on communication protocol structure for interface between LDTS(Local Data Transmission System) and EIS(Electronic Interlocking System) is represented.

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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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