• 디지털산업정보학회논문지
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• 제5권3호
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• pp.175-184
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• 2009

We are entering into a era of enterprise computing that is characterized by an emphasis on broadband convergence, knowledge s haring, and calm services. Some people refer to this as the "ubiquitous" computing because its focus is on a high degree of connectivity between a company and its customers, suppliers, and channel partners. Ubiquitous computing technology, "RF" stands for "radio frequency"; the "ID" means "identifer". The tag itself of a computer chip and an antenna. The shortest metaphor is that RFID is like a bar-code but is read with an electromagnetic field rather than by a laser beam. Much has already been written about the use of RFID. But there is no has written about the use of RFID in the convention industry. Therefore this study have specific objectives as follows. 1. To give details on the use of RFID in convention. 2. To introduces the key concepts behind RFID technology. 3. To identify advantage & disadvantage of RFID technology using a BEXCO CASE study. 4. To study on ubiquitous convention using RFID and effective operation methods such as entrance identification system, session management, machine management, CRM management, visitor management, and contents management. This results provide into the current status of ubiquitous computing technology in convention industries. Specific advantages by using ubiquitous computing technology(RFID) are one-stop differentiate service, wireless internet service, use of visitor management system, entrance by tag, and U-logistics. On other side, disadvantages are security, stabilization of RFID system, higher price of RFID tag, and commercial scale. Convention by using of RFID technology is currently at an early stage. Convention company as BEXCO need to have the capabilities to adapt, to customize, to commercialize, and to modify technology to suit our circumstances.

• 로봇학회논문지
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• 제4권2호
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• pp.147-154
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• 2009

Visions of ubiquitous robotics and ambient intelligence involve distributing information, knowledge, computation over a wide range of servers and data storage devices located all over the world, and integrating tiny microprocessors, actuators, and sensors into everyday objects as well in order to make them smart. In this paper, we introduce our ongoing research effort aimed at realizing ubiquitous robots in an information structured space. For this, a ubiquitous space and ambient intelligent systems for a librarian robot are introduced and the RFID technology based approach for these systems is described.

• 경영정보학연구
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• 제8권1호
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• pp.141-158
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• 2006

최근에 유비쿼터스 공간 서비스의 통합된 집합으로서의 U-City 구축이 유비쿼터스 컴퓨팅 기술을 실현할 수 있는 유력한 분야로 부각되고 있다. 그러나 어떠한 종류의 유비쿼터스 공간 서비스들이 필요하며 또한 그러한 요구사항을 만족시키기 위해 어떤 종류의 유비쿼터스 컴퓨팅 기술을 활용하여 구현해야 하는지에 대한 조직화된 U-City 요구분석 방법이 존재하지 않는다. 따라서 본 연구의 목적은 요구분석 도출과 관계된 U-City만의 독특한 구축 철학과 이를 토대로 U-City내의 유비쿼터스 공간에 어떤 서비스가 존재해야 하는지에 대한 분석방법론을 제안하는 것이다. 이를 위해 U-City의 잠재 시민들을 대상으로 한 현장 조사를 통해 주요성공요인을 추출하였다. 또한 국내 유비쿼터스 컴퓨팅 기술분야의 전문가들을 대상으로 하여 표적집단면접법을 통해 유비쿼터스 공간 서비스와 주요성공요인간의 관계성을 분석하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권9호
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• pp.4398-4417
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• 2017

Multi-user Multiple-Input and Multiple-Output (MU-MIMO) has potential for prominently enhancing the capacity of wireless network by simultaneously transmitting to multiple users. User selection is an unavoidable problem which bottlenecks the gain of MU-MIMO to a great extent. Major state-of-the-art works are focusing on improving network throughput by using Channel State Information (CSI), however, the overhead of CSI feedback becomes unacceptable when the number of users is large. Some work does well in balancing tradeoff between complexity and achievable throughput but is lack of consideration of fairness. Current works universally ignore the rational utilizing of time resources, which may lead the improvements of network throughput to a standstill. In this paper, we propose TOUSE, a scalable and fair user selection scheme for MU-MIMO. The core design is dynamic-time-warping-based user selection mechanism for downlink MU-MIMO, which could make full use of concurrent transmitting time. TOUSE also presents a novel data-rate estimation method without any CSI feedback, providing supports for user selections. Simulation result shows that TOUSE significantly outperforms traditional contention-based user selection schemes in both throughput and fairness in an indoor condition.

• 한국전자거래학회지
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• 제11권3호
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• pp.89-108
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• 2006

본 연구는 21세기 IT 산업을 주도할 유비쿼터스 시대에 대비하여 IT 인력 양성을 대표하는 국내 대학의 유비쿼터스 기술 및 서비스 인력의 양성실태를 파악하고자한 것이다. 이에, 유비쿼터스 기술 및 서비스 인력에 대한 체계적인 분류체계를 개발하고, 국내 대학의 유비쿼터스 기술 및 서비스 관련 인력 양성 실태를 분석하여 시사점 및 대안을 제시하였다. 유비쿼터스 기술 관련 인력은 유비쿼터스 환경 하에서의 정보의 흐름에 따라 분류하였고, 유비쿼터스 서비스 관련 인력은 유비쿼터스 사용자의 관점에서 분류하였다. 본 연구의 결과물은 유비쿼터스 인력을 양성하기 위한 산 학 연 관의 협력 프로그램을 개발하는데 도움을 줄 것이며, 향후 유비쿼터스 인력의 수급 전망을 분석하는데 참고 자료로 활용될 수 있을 것이다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.2235-2239
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• 2003

The aim of this research is to study and develop enabling technologies for home healthcare device with ubiquitous network. The motivation of this paper is to enable healthcare in home, to development the device for smart home health care. To achieve the aim, we must develop the prototype platform based on home gateways, distributed context user interface based on UPnP and support for information sharing with high speed power line communication and mobile infra-structures. And IPv6 is the base technology of this platform. In this paper, we concern that physical health, mental health and medical emergencies is all of home healthcare. With the smart device, we evaluate the connectivity, automatic information extraction and private data exchange and event driven message. The result of this paper is demonstration of smart device for ubiquitous communication in a healthcare application such as patient monitoring device and several information services. In conclusion, home healthcare will support more healthy and easy living for a human.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2007년도 추계학술발표대회 논문집
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• pp.210-213
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• 2007

The direction of this project is creates a future and it experiences ubiquitous world. The subject of the space is 'Ubiquitous Creative World' which Imagining the past becomes actuality and imagining in future become actuality and future when it will approach at once. The storyline of this space is as belows; 1 Zone - Ubiquitous life Gallery : it will be able to experience the future world ; home, office, street, school and the others. 2 Zone - Interactive Play Gallery : it will be able to explore the interactive media with information technology ; digital cafe, imagining jump, digital art and the others. 3 Zone - New product and Business Gallery : it composed with business, new product, and demonstration gallery such as public information space. The space concept makes connection and concentration which uses unit and line for world which becomes accomplished by the network. Connection of digital and the human being to make the center of new digital life.

• 한국항행학회논문지
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• 제19권6호
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• pp.643-647
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• 2015

최근 센서와 네트워크 기술을 접목한 유비쿼터스 기술이 부각되고 있으며 이를 USN (ubiquitous sensor network)라 한다. 본 논문에서는 이러한 USN 기술을 기반으로 영유아의 건강과 안전을 관리하기 위해 스마트 센서를 이용한 Baby care 모바일 어플리케이션을 제안하고 개발하였다. 개발한 모바일 어플리케이션은 영유아의 낙상 감지, 울음 감지, 발열 감지 등의 정보를 개발한 모바일 어플리케이션의 화면에 나타내었다. 개발된 모바일 어플리케이션은 모의 실험을 통하여 확인하였다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 춘계학술대회
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• pp.317-320
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• 2009

At the present day, the use of containers crisscrossing seven seas and intercontinental transport has significantly increased and bringing the change on the shape of the world economy which we cannot be neglected. Additionally, with the recent technological advances in wireless sensor network (WSN) technologies, has providing an economically feasible monitoring solution to diverse application that allow us to envision the intelligent containers represent the next evolutionary development step in order to increase the efficiency, productivity, utilities, security and safe of containerized cargo shipping. This paper we present a comprehensive containerized cargo monitoring system which has adaptively embedded WSN technology into cargo logistic technology. We share the basic requirement for an autonomous logistic network that could provide optimum performance and a suite of algorithms for self-organization and bi-directional communication of a scalable large number of sensor node apply on container regardless inland and maritime transportation.

• 한국산업정보학회논문지
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• 제19권3호
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• pp.9-15
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• 2014

In the ubiquitous computing environment, a ubiquitous vehicle will be a communication node in the vehicular network as well as the means of ground transportation. It will make humans and vehicles seamlessly and remotely connected. Especially, one of the prominent services in the ubiquitous vehicle is the vehicle remote operation. However, mutual-collaboration with the in-vehicle communication network, the vehicle-to-vehicle communication network and the vehicle-to-roadside communication network is required to provide vehicle remote operation services. In this paper, an Internet-based human-vehicle interfaces and a network architecture is presented to provide remote vehicle control and diagnosis services. The performance of the proposed system is evaluated through a design and implementation in terms of the round trip time taken to get a vehicle remote operation service.