• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.4
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• pp.509-518
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• 1993

Protocol conversion is to resolve the imcompatibility between networks so that users on different protocols can communicate with each other. This paper designs a formal model, EPN , to increase its modeling power and analyze conversion protocol and proposes a conversion algorithm using it. The conversion algorithm has two capabilities : synchronization and automatic error recovery function. Therefore burden of protocol converter design will be reduced, automatic protocol converter design can be possible and implementation for half-gateway will be easy.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.8
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• pp.1820-1826
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• 2013

Heterogeneous field sensor network between sensor to sensor is designed the CAN method to bus type structure in most using at industry. This Network is supporting a distance vector routing protocol on a characteristic structural a bus type. Also This network support to convert as making separate routing table in heterogeneous network. However distance vector routing protocol make a problem of decrease efficiency because of restriction of network expandability and low transmission process. We propose new CAN routing protocol to support network expandability and high transmission process of industry network. New CAN routing protocol structure addition priority and optional function field based on RIPv2. We established heterogeneous field sensor network, we measure data Throughput(bits/sec) for confirm new CAN routing protocol to increase efficient in industry.

• Proceedings of the KAIS Fall Conference
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• 2001.05a
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• pp.195-198
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• 2001

본 논문에서는 최근 그 응용이 증가하고 있는 CAN통신 프로토콜을 이용하여 차량내 network개념을 도입하여 차내 각종 전기신호와 센서 입출력을 제어하는 통합 시스템의 개발에 관한 것을 간략히 기술한다. CAN시스템은 최대 1Mbps의 전송 비트율과 에러검출 및 에러영향의 시스템 내로의 한정 등의 기능이 뛰어난 높은 레벨의 통신 안정성을 가지면서 분산 실시간 제어를 효율적으로 지원하는 serial bus communication프로토콜의 하나이다. 본 연구에서 개발된 시스템은 4개의 독립 제어시스템과 관련 소프트웨어로 구성되어 있으며. 각각의 제어시스템간의 정보의 교환은 CAN통신 프로토콜에 안정적으로 이루어지며 자동차의 고급화와 함께 향후 실용화가 기대된다.

• The Journal of the Korea Contents Association
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• v.6 no.12
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• pp.59-70
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• 2006

Since communication systems software is very large and complex, it requires component based architecture for software reusability, hardware transparency, high performance, and easy software reconstruction in different applications. In order to meet these requirements, we analyze performance and inter-process communication techniques of existing CORBA IIOP, and designed a shared memory-based CORBA inter-ORB protocol that would best fit for communication systems software. The designed protocol supports the same interface and can minimize the message transfer overhead in the same host environment. The test results of our protocol compared with other protocols show that the performance is increased by about 15%-200%. We are thus assumed that our protocol can be used in developing CORBA-based component software architecture for communication systems.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.2
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• pp.317-322
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• 2015

Recently, due to the variety and complexity of marine electronics communication devices, much research has been done to adopt the novel communication protocol. Among them, NMEA2000 protocol, is adopted as standardized protocol to the next generation ship. In this paper, we design and implement the conversion algorithm for sensor protocol based on NMEA2000, and analog data module which convert data format between NMEA2000, CAN, Ethernet, RS232. The present study was designed to implement user-based data monitoring system by supporting various communication protocols through the development and application of key technologies through NMEA2000.

• Proceedings of the Korea Institute of Convergence Signal Processing
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• 2001.06a
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• pp.29-32
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• 2001

This paper describes a development of the integrated controller system for car electrical signal control with CAN communication protocol. The CAN protocol is a robust serial bus system for the control of distributed module in the multiplexed network. After a brief of the main features of the CAN will be addressed, this paper presents the result of the development of the integrated hardware system overall control program.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.13 no.5
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• pp.113-127
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• 2003

WTLS as secure protocol of WAP makes TLS that is used in wireless Intemet protocol for TCP security be appropriate for wireless environments. And purpose of WTLS is to provide safe and efficient services. WTLS protocol consists of 4 protocols(Handshake, ChangeCipherSpec, Alert, Application Data etc.). In this papers we analyze properties of Handshake protocol and procedures of establishing master secret in detail. And then we analyze securities against several attacker models with them for a basis. Also we propose new Handshake protocol that is secure against active attacker model and can provide various security services.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.11
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• pp.2139-2144
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• 2017

In case of communication method and protocol applied to the industrial field, various kinds and methods are applied to the field according to the environment and hardware configuration specifications. In order to develop and construct an industrial monitoring system, the development of the equipment is carried out through hardware system analysis and communication protocol analysis each time, so that a lot of development costs and time are being entered. In this paper, we proposed a programmable protocol conversion algorithm to support the integrated monitoring of industrial equipment using various protocols. This method can extract the necessary data from the data transmitted by serial communication, NMEA, CAN, Modbus communication method and transmit it to Ethernet. We implemented a communication gateway module that supports various communication methods, and experimented with data conversion and transmission.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.281-284
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• 2006

최근 산업용 내장형 소프트웨어는 높은 부가가치를 창출할 수 있는 분야로 각광을 받고 있다. 최근 산업용 기기의 하드웨어뿐 아니라 내장형 소프트웨어에 대한 품질 시험 및 인증을 위한 기반 연구가 활발히 수행되고 있다. 본 연구는 산업용 소프트웨어 국제표준 적합성 인증」사업 추진과 관련하여 산업용 소프트웨어의 통신 기능에 대한 성능 평가 시험을 위하여 다양한 통신 프로토콜을 지원하는 시뮬레이션 소프트웨어를 개발한 것이다 소프트웨어는 산업용 통신 프로토콜인 필드버스 방식(Profibus, DeviceNet, CAN, RS232C, RS485, RS422등) 및 이더넷 기반의 TCP/IP 프로토콜에 대한 통신 시뮬레이션 시험 기능을 가지고 있으며, 프로토콜별 패킷 프레임을 사용자가 임의적으로 설정할 수 있게 하여 다양한 통신환경에서의 시뮬레이션 시험을 지원하고 각 프로토콜은 단방향 및 양방향시험을 모두 지원한다. 본 논문에서는 프로토콜별 시험 항목 및 방법을 소개하고 시뮬레이선 시스템의 하드웨어와 소프트웨어 구성 및 운영환경을 기술하였다.

• KIISE Transactions on Computing Practices
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• v.22 no.8
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• pp.381-386
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• 2016

Recently full-duplex communication in wireless networks is enabled by the advancement of self-interference cancellation technology. Full-duplex radio is a promising technology for next-generation wireless local area networks (WLAN) because it can simultaneously transmit and receive signals within the same frequency band. Since legacy medium access control (MAC) protocols are designed based on half-duplex communication, they are not suitable for full-duplex communication. In this paper, we discuss considerations of full-duplex communication and propose a novel full-duplex MAC protocol. We conducted a simulation to measure the throughput of our MAC protocol. Through the simulation results, we can verify that significant throughput gains of the proposed full-duplex MAC protocol, thus comparing the basic full-duplex MAC protocol.