• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.7-10
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• 2009

본 연구에서는 차량 네트워크를 구성하는 CAN(Controller Area Network), MOST(Media Oriented System Transport)등의 버스 시스템을 중심으로 IVN(In-Vechicle Network)에 대한 선행연구와 지능형 통합 Gateway 개발 연구를 통해 통합적인 차량 상태정보 수집 및 교환을 위한 차량 Gateway를 제시하고, Soc(System on Chip)형태의 차량용 인터페이스(HMI, Human Machine Interface)를 통한 지능형 통합 GateWay 통신 기술을 OSGi의 번들 형태로 제작하여 알아본다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.139-141
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• 2001

현재 급격히 증가하고 있는 인터넷 서비스 수요에 따라 데이터망의 구축을 위한 투자의 필요성이 제기되어 여러 벤더들이 최적의 장비를 구입하여 망을 구축할 수 있도록, 통신 장비들의 상호 운용성을 지원하는 멀티서비스를 지원하는 개방형 구조의 망 시스템을 표준화하는 작업이 이루어지고 있다. 이 논문에서는 개방형 구조의 망을 구성하는 MG와 MGC 간에 제어 프로토콜인 MEGACO 프로토콜을 확장하여 MG에 존재하는 자원을 탐색하는 기법을 알아보고, 간단한 관리 기능 측면에서 관련 프로토콜과의 비교분석 후, 효율성을 증명한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11b
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• pp.1281-1284
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• 2003

본 논문에서는 무선 이동 통신 환경에서 동영상 전송시 발생하는 패킷 손실 및 지연을 줄이고 최대한 모바일 호스트에서 손상 없이 플레이 할 수 있도록 gateway를 이용하여 media 서버에서 mobile host까지의 적절한 전송 스케줄을 구한다. 모바일 호스트의 구조상 작은 버퍼량을 가지고 있으며, 그리고 무선 통신 환경은 유선에 비하여 작은 대역폭을 가지고 있다. 미디어 스트림을 전송하는데 있어서 dropping 없이 패킷이 전송될 수 있도록 gateway상에서 버퍼링을 실시한다. 이 논문에서는 gateway와 mobile host간의 transmission rate를 조절하여 gateway상의 버퍼량을 최소화시키는 전송 스케줄 방법을 제안한다.

• Smart Media Journal
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• v.3 no.2
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• pp.37-42
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• 2014

In this paper, the function design of smart media platform control with smart monitoring, and displaying modules which have the priorities of smart plug based smart outlet, is proposed for electrical suppliance of essential information appliance in emergency power consumption situation(blackout, peaktime etc). The effect of power management will be maximized by this smart gateway interlocking with ESS(energy storage system) which has bi-directional power transmission control modules, and smart outlet based on the priority control actions.

• Journal of the Korea Society of Computer and Information
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• v.23 no.9
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• pp.113-122
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• 2018

In this paper, IoT(Internet of things) technology, which is the core of the 4th industrial revolution, was applied to the study of reduction of consumption current. The IoT is a sensor that collects data, a sensor communication, a gateway that processes and stores the collected data. Data application of IoT technology is applied to smart home, smart city, healthcare, smart factory, etc. and it needs to be applied to various industrial fields. By sensing the location of the sensor device, the specific functions of the gateway and the platform are turned ON and OFF to reduce the consumption current of the equipment during the OFF period. When the sensor device accesses the gateway, the specific function of the gateway is turned ON and When the device is separated from the gateway, it senses the sensitivity of the wireless signal and automatically turns off the certain functions. As a resurt, it has reduced the consumption of current. In this paper, we propose a novel system for detecting the location of sensor devices by applying IoT technology. The system implementation is realized by software based, and defines the requirements for the implementation of the sensor device gateway. The gateway automatically detects the location, movement of the device and performs necessary functions. Finally verifies the automatic detection performance of the gateway according to the location of the device. It will contribute greatly to the development of the smart city and office.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.1018-1019
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• 2018

본 논문에서는 오픈 하드웨어 플랫폼인 라즈베리파이를 활용하여 IoT 디바이스-클라우드 간 발생 가능한 상호운용성 문제를 해결할 수 있는 EdgeX Open Framework 기반 IoT Edge Gateway 개발 과정을 기술하고 이를 검증하였다.

• Journal of Institute of Control, Robotics and Systems
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• v.17 no.7
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• pp.720-729
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• 2011

The demand for wireless technology in home automation systems has recently been increasing due to several advantages such as installation cost reduction, easy placement, easy extension, aesthetic benefits, and mobile device connectivity. Among the many wireless technologies, ZigBee is one of the most useful for home automation; a wireless home networking system can be configured using ZigBee alone. Compatibility with conventional home networking systems that are based on wired media, however, is not supported. KNX is a mature protocol for wired media that is recognized as an international standard. This paper proposes a KNX-ZigBee gateway to interface between KNX and ZigBee systems and thereby enable integration of wired and wireless home automation systems.

• Journal of KIISE:Computing Practices and Letters
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• v.5 no.5
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• pp.619-627
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• 1999

To support multimedia services between network domains with different environments, it is required to map the functionalities in many aspects. In this paper, we implemented interworking gateway which provides protocol conversion and QoS(Quality of Service) adaptation to interwork DAVIC services based on ATM(Asynchronous TRansfer Model )network and Internet AV services. The interworking gateway converts RTSP(Real-Time Streaming Protocol ) message into DSM-CC(Digital Storage Media Command & Control) messages to control the stream that is served in ATM network, and transmits data stream by using RTP(Real-Time Transport Protocol) The interworking gateway provides QoS adaptation functionalities by QoS monitoring and MPEG filtering to meet the variation of network bandwidth.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.01a
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• pp.283-285
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• 2013

본 논문에서는 헬스케어 시스템 제공업체와 소비자 모두 스마트폰 헬스케어를 향상시킬 도구로 수용할 수 있고 ISO/IEEE11073, HL7 표준을 적용한 홈 헬스케어 시스템을 제안하고자 한다. 이 시스템은 표준 기반의 홈 헬스케어 게이트웨이 플랫폼의 중요성이 부각되는 홈 헬스케어에서 건강측정을 위하여 가장 많이 사용되는 혈당계, 혈압계, 심박측정계, 산소포화도 측정계, 심전도 측정계 등의 홈 헬스케어 의료기기를 제안하였다. 아울러, 표준 핵심 기술 요소인 ISO/IEEE 11073, HL7을 준용하는 게이트웨이 플랫폼을 스마트폰에 적용하여 PMG(personal mobile gateway) 기반의 홈&모바일 헬스케어 시스템이다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.5 no.7
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• pp.1272-1279
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• 2001

Owing to the change of various services requirement and the change of communication paradime as the development of new transit network technology: ATM, MPLS and DWDM, the latest PSTN is evolving into the next generation network, which have the very high speed integrated packet network of open-type structure. but in the next generation network, the existing voice service is being researched for the continuous technology development as the important service from the viewpoint of communication business. This paper suggests the method of efficient bandwidth management in the media gateway that can accommodate the various new services as well as the existing voice services by appling to the next generation network.