• 한국정보통신설비학회:학술대회논문집
• /
• 2002.08a
• /
• pp.242-245
• /
• 2002

정부는 시내전화 및 지능망서비스(080)에 대하여 2003년 상반기부터 번호이동성 서비스를 제공하도록 규정하고 있다. 번호이동성 서비스는 사업자간에는 경쟁을 활성화시키고 가입자에게는 이용의 편리함을 제공하기 위한 서비스로 서비스 유형으로는 서비스제공자 이동성(Service Provider Portability), 위치이동성(Location Portability) 및 서비스이동성(Service Portability)이 있다. 그리고 서비스 구현방식으로는 크게 교환기 기반 방식(Remote Call Forwarding)과 지능망방식(All Call Query, Query on Release)이 있다. 국내 번호이동성 서비스 적용 방식은 지능망 방식인 QoR 방식으로 결정되었으나 최근의 통신환경의 변화를 감안하여 서비스 도입 초기의 효율적인 서비스 도입을 위한 종합적인 재검토가 이루어지고 있다. 이에 따라 본 논문에서는 QoR 방식의 번호이동성 서비스를 위하여 교환기에서 필요한 필요 기능 및 기술적 문제점들을 교환계위별로 고찰하고자 한다.

• Journal of KIISE:Computing Practices and Letters
• /
• v.13 no.3
• /
• pp.131-140
• /
• 2007

A general medical information service in hospitals recently has been rapidly developed in the effective patient management due to the digitalization. In addition, the hospitals make an effort to support the medical information service in ubiquitous environment. A key requirement in ubiquitous environment is the ability to communicate between the image viewer system using the DICOM standard and a server system to support the medical information service. This paper describes a remote networking system based on the mobile terminal with RFID technology for the medical information service. In order to apply the overall configuration, we first implemented the DICOM viewer system, configured the database to store the patient information, and realized the server/client networking system in mobile terminal environment. In particular, this paper showed the capability for the medical image-based communication as well as the text-based communication.

• Convergence Security Journal
• /
• v.21 no.3
• /
• pp.25-30
• /
• 2021

Due to the current COVID-19 pandemic, companies and institutions are introducing virtual desktop technology, one of the logical network separation technologies, to establish a safe working environment in a situation where remote work is provided. With the introduction of virtual desktop technology, companies and institutions can operate the network separation environment more safely and effectively, and can access the business network quickly and safely to increase work efficiency and productivity. However, when introducing virtual desktop technology, there is a cost problem of high-spec server, storage, and license, and it is necessary to supplement in terms of operation and management. As a countermeasure to this, companies and institutions are shifting to cloud computing-based technology, virtual desktop service (DaaS, Desktop as a Service). However, in the virtual desktop service, which is a cloud computing-based technology, the shared responsibility model is responsible for user access control and data security. In this paper, based on the shared responsibility model in the virtual desktop service environment, we propose a cloud-based hardware security module (Cloud HSM) and edge-DRM proxy as an improvement method for user access control and data security.

• Korean Journal of Remote Sensing
• /
• v.17 no.4
• /
• pp.359-368
• /
• 2001

The prototype of forest fire management system on Web was studied. In the architecture of this system, one of the most important concerns is to handle load upcoming to Web Server so that it provides Web service without any delay or failure. In order to solve this problem, the agent is designed on dispatcher in a Web server cluster and implemented to distribute load dynamically by considering the information related to load coming to the Web Server such as the number of connection to the Map Server. The proposed forest fire management system has user-friendly interface with the GIS mapping functionality by selecting Map Objects Internet Map Server (MO IMS) as Map Server and is implemented using Java as programming language.

• Proceedings of the KSRS Conference
• /
• 2002.10a
• /
• pp.197-201
• /
• 2002

The high prices of satellite images prevent researchers from studying remote sensing and most non-professional people doesn't have the simple and easy solutions for the manipulation of satellite images. "Integrated Management of Satellite Imagery Information" project which will be promoted by ETRI (Electronics and Telecommunications Research Institute) will provide the solutions for the above mentioned problems. We will introduce the archiving center in this study. This includes the data construction, storage, management and distribution. We first review the background for this archiving center and introduce the interior and foreign institutes which archive and distribute satellite images. We review our H/W system and S/W system briefly. Finally, the further service of our project will be suggested. Since we will distribute the satellite images (Landsat, SPOT, JERS, Corona, Kompast-1) and will receive Landsat7 ETM+ in 2003 you, this will help the professional work dealing with the satellite image and attract the non-professional people for simple and easy manipulation solutions of satellite image.

• KSCI Review
• /
• v.14 no.2
• /
• pp.129-134
• /
• 2006

In this paper, we designed and implemented DCS terminal remote monitoring middleware for real-time auditor and management terminal status signal with relay and fuse status at power management room. The middleware consist of four component as event analyzer, event manager, service manager and user interface. We expected economic effects extend relay life-time that pre-detected errors and prevented relay fault.

• ETRI Journal
• /
• v.34 no.3
• /
• pp.352-360
• /
• 2012

This paper proposes a low-cost, low-power, and high-capacity optical-electrical-optical-type reach extender that can provide 3R frame regeneration and remote management to increase the reach and split ratio with no change to a legacy time division multiple access passive optical network. To provide remote management, the extender gathers information regarding optical transceivers and link status per port and then transmits to a service provider using a simple network management protocol agent. The extender can also apply to an Ethernet passive optical network (E-PON) or a gigabit-capable PON (G-PON) by remote control. In a G-PON, in particular, it can provide burst mode signal retiming and burst-to-continuous mode conversion at the upstream path through a G-PON transmission convergence frame adaptor. Our proposed reach extender is based on the quad-port architecture for cost-effective design and can accommodate both the physical reach of 60 km and the 512 split ratios in a G-PON and the physical reach of 80 km and the 256 split ratios in an E-PON.

• Journal of information and communication convergence engineering
• /
• v.16 no.1
• /
• pp.31-37
• /
• 2018

In this work, we propose an analytic framework for evaluating the quality of service and dimensioning the link capacity in the gateway router of a smart farm with a greenhouse eco-management system. Specifically, we focus on the gateway router of an IoT network that provides an access service for smart farms. We design the link capacity of a gateway router that is used for the remote management of the greenhouse eco-management system to accommodate both time-critical and delay-tolerant traffic in a greenhouse LAN. For this purpose, we first investigate the ecosystem for smart farm, and we define the specification and requirements of the greenhouse eco-management system. Second, we propose a system model for the link capacity of a gateway that is required to guarantee the delay performance of time-critical applications in the greenhouse LAN. Finally, the validity of the proposed system is demonstrated through a series of numerical experiments.

• Proceedings of the KIEE Conference
• /
• 2008.07a
• /
• pp.1336-1337
• /
• 2008

This study developed a ILPMS (intelligent lightning protection management system) to manage and mend SPD module effectively, intelligence style bonding terminal box for transmitting SPD state data, RTU(remote terminal unit) having wireless transmission facility, so that a man in service can confirm SPD state throughout its leakage current level in a central management system.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2001.04a
• /
• pp.529-532
• /
• 2001

A Remote Monitoring Server(RMS) server which uses Internet and World Wide Web is constructed for SMD in-line system. Hardware base consists of server computer, virtual SMD in-line system and other computers. Software includes assignment of server, RDBMS and various modules in server home page. Web browser provide production quantity, bad PCB quantity, error number and error message in virtual SMD module, user information in setup module, detailed error information in fault diagnosis module, fault history in fault history module and customer information in customer service management module. These functions of the RMS helps a decrease of non-operation time and a service response as fast as possible.