• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.3
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• pp.1213-1220
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• 2013

The purpose of this study was to identify the effect of the Smart Care ubiquitous healthcare service on hypertension management. Fifty one patients with inadequately controlled blood pressure (Systolic Blood Pressure ${\geq}$ 140 mmHg despite prescribed antihypertensive medication) from 4 local clinics participated in this study. Remote biometric monitoring and healthcare consultation via videophone was provided to the participants during 24 week - Smart Care service. The average number of blood pressure monitoring and the average day of remote consult using Smart Care Service system was 121 and 14.8 per participant. As a result of analyzing change in blood pressure during 24 weeks, there was a significant difference in blood pressure between baseline and 24 weeks. Systolic blood pressures of 86.3% participants were dropped within a normal range at 24 week. Smart Care u-health service could be effective in reducing blood pressure.

• Electronics and Telecommunications Trends
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• v.23 no.5
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• pp.56-66
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• 2008

본 고에서는 로봇 자체에서 제공하기 어려운 고기능의 로봇 서비스를 다수의 이기종 로봇 플랫폼에게 안정적으로 제공할 수 있는 네트워크 기반 로봇 표준 환경으로 개발하고 있는 RUPI 서버 소프트웨어 플랫폼에 대하여 기술한다. RUPI 서버 소프트웨어 플랫폼은 원격에서 로봇 클라이언트의 상태를 진단하고 복구하는 로봇 클라이언트 관리 기술, 로봇 클라이언트에서 수행되기 어려운 응용 컴포넌트를 로봇 클라이언트를 대신하여 적재, 관리, 실행하는 로봇 클라이언트 응용 관리기술, 상황인지 기반의 원격 로봇 응용 개발 및 운용을 위한 원격 로봇 응용 플랫폼 기술, 다수의 이종 로봇 클라이언트가 안정적으로 접속할 수 있도록 고가용성을 보장하는 RUPI 서버 가용성 기술로 구성되며 본 고에서는 이를 위한 표준기술 규격과 동향 및 구현 기술에 대하여 살펴본다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.1143-1146
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• 2011

RFID 및 USN 기술 발전과 함께, 다양한 사회 및 산업 분야에 이를 적용하여 생산, 업무 및 유지 관리의 효율성을 극대화하기 위한 융합 IT 기술 개발이 증대되고 있다. 특히 농업 분야는 생산량 증대, 품질 향상 및 피해 예방을 위해 최적의 생장환경 관리가 중요하게 되었다. 본 논문에서는 농업 분야에 적용하기 위해 저전력 생장관리 센서네트워크, 생장관리 플랫폼을 기반으로 하는 지능형 생장관리 모니터링 서비스를 제시한다. 본 서비스는 원격 재배지에 대한 지속적 생장환경 데이터 수집, 이를 통한 다양한 모니터링을 가능하게 함으로써 재배자가 다양한 생장관리 업무를 효율적으로 수행할 수 있도록 한다.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.47 no.6
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• pp.93-102
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• 2010

Existing web based information service system solutions show limitations in mobile information services, as well as problems such as uncertain error messages, and difficulty providing swift assistance or real time emergency support. In order to solve these deficiencies, a realtime wireless remote control system has been designed and implemented in this thesis, which is capable of managing and monitoring remote systems using mobile communication devices (Mobile Phone, PDA, Smart Phone) for realtime control. Proposed systems are applied at remote places, for instance 'office building', and a nursery school like 'kindergarten'. In the case of implemented at office building, it can be managing and controlling at real time all sorts of the sensor information that are installed at office building system environment through wire(web environment) or wireless(mobile device). In the other case at kindergarten system that are providing the real-time wireless remote control and monitoring system can be monitoring activity of kindergarten children with a mobile phone of authentication user. The security functions of proposed systems include mobile device user authentication and target system access control. The proposed systems allow real-time user authentication function and system access control function that improve the security of resource administrators and mobile device users, and provides not only uninterrupted services, but also real time mobile service environments.

• The KIPS Transactions:PartC
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• v.19C no.1
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• pp.63-70
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• 2012

To ensure privacy of individual information in remote healthcare service, health data should be protected through a secure technology such as encryption scheme. Only user who delegated decryption right can access to sensitive health data and delegator needs capability for revocating access privilege. Recently, in ubiquitous environment, CP-ABTD(Ciphertext-Policy Attribute-Based Threshold Decryption with Flexible Delegation and Revocation of User Attributes) which extends CP-ABE(Ciphertext-Policy Attribute-Based Encryption) has been proposed for these requirements. In this paper, we construct remote healthcare monitoring system with delegation and revocation capability for attribute in CP-ABTD. Finally, we analyze collusion attack between users in our system.

• Journal of KIISE:Information Networking
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• v.31 no.6
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• pp.620-632
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• 2004

IP is not suitable for mobile nodes by network-based routing because mobile nodes are dynamically change their network attachment point. Mobile-IP is an IETF standard providing continuous access to the Internet for mobile nodes, but it has the triangle routing problem. Also it has a performance degradation problem by massive packet loss during layer 3 handoff of mobile nodes. Especially, two IETF multicast support schemes for Mobile-IP do not guarantee the quality of realtime multimedia services because they have several problems such as long routing path, packet duplication(hi-directional tunneling) and massive packet loss(remote subscription). In this paper, we propose a lossless remote subscription scheme that guarantees the quality of realtime multimedia services over Mobile-IP. From the result of simulation, we verified that the proposed scheme in this paper can reduce the delay time of remote subscription by the effect of the low latency handoff scheme that is extended to apply to the multicast group management and it requires only 0.58% buffer spaces of the previously proposed lossless remote subscription scheme.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.601-604
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• 2012

Recently, there have been many attempts to monitor the equipment's condition or the input devices in sensors remotely by using cable and wireless communications. Also, the research and development on this matter has been actively carried on. In this paper, we developed the monitoring system which will eliminate the errors of manual reading by humans and therefore will secure reliability between tenants and the building management office. Through the system, the private telecommunication network can be connected between the building management office and the households. This enables the control office to remotely read the electric meter and exact energy consumption of each household even when the tenants are absent.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.259-260
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• 2022

현대사회에서 인터넷 그리고 스마트폰을 비롯한 각종 모바일기기는 이제 국민 모두가 사용하는 필수품이 되었다. 통신은 의사전달 수단과 단순한 소통의 개념을 넘어서 교통, 문화, 산업 그리고 소셜미디어의 활용 등을 통해서 국민 개개인의 주요한 생활 일부분이 되었다. 또한 정부는 디지털정부 구현을 위해 각종 민원서류 및 정부 업무를 통신망을 통한 원격 서비스로 수행가능할 수 있도록 운영계획을 발표하였다. 이러한 계획이 실현되고 현재 우리가 이용하고 있는 모든 유무선 통신서비스가 안정적으로 구현되기 위해서는 통신망의 안전성 확보가 가장 중요한 핵심적 요소이다. 따라서, 본 연구는 통신 분야 국가핵심기반 영역을 관리하는 주요통신사업자의 통신망과 서비스의 안전성 확보를 위해 기능연속성계획(COOP)수립 방향을 도출하고자 한다.

• Smart Media Journal
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• v.10 no.4
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• pp.9-14
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• 2021

In the case of the existing remote collaboration, the remote support service-oriented system is not suitable for the use of the field-oriented multi-person remote collaboration system. This paper is a remote collaboration system development for various industrial sites. We develop remote support and work management that faces the various needs of industrial sites, real-time video remote support between workers, and real-time voice work sharing between workers. In addition, The goal of the development aims to increase the usability by strengthening the security function through encryption in the video and to develop a more efficient system. Finally, the development contents are the remote management and the support software development, Android app development for worker, WebRTC-based remote collaboration system construction and development, and prototype development. These products are expected to increase demand and increase sales by installing and operating at industrial sites, and can promote manpower training, understanding trending technologies, and improving capabilities.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.6
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• pp.1301-1306
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• 2015

This paper is to automate the intelligent and equipment to recycle the volatile organic compounds in various a gas stations and a laundry, in real life. In addition, based the ZigBee module and TCP/IP communications on ICT technologies, it's propose an integrated management system to monitor and manage an liquid at a remote location.Furthermore, it's propose a service model that can be freely managed from a remote location based on the app on android. In this paper, we present a communication protocol of the bridge modules and a liquefier of intelligent control system based ZigBee and MCU(Micro Controller Unit). Through the development of smart app based android mobile services in an integrated management system, it's represent for liquefier to a DB server for remote management(MS SQL 2012) and a web server (OS: Windows 2008).