• Title/Summary/Keyword: Ubiquitous Home Service

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Context-based Service Reasoning Model Based on User Environment Information (사용자환경정보 기반 Context-based Service 추론모델)

  • Ko, Kwang-Eun;Jang, In-Hun;Sim, Kwee-Bo
    • Journal of the Korean Institute of Intelligent Systems
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    • v.17 no.7
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    • pp.907-912
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    • 2007
  • The present level of ubiquitous computing technology have developed to the point where Home-server provides services that user require directly for user in the intelligent space. But it will need intelligent system to provides more active services for user in the near future. In this paper, we define the environment information about situation that user is in as Context, and collect the Context that stereotype as 4W1H form for construct the system that can decision service will be provide from information about a situation that user is in, without user's involvement. Additionally we collect information about user's emotional state, use these informations as nodes of Bayesian network for probabilistic reasoning. From that, we materialize Context Awareness system about it that what kind of situation user is in. And, we propose the Context-based Service reasoning model using Bayesian Network from the result of Context Awareness.

A Study on UICC(Universal IC Card)-based Authentication Mechanism using OTP (OTP를 활용한 UICC(Universal IC Card) 기반의 인증 메커니즘에 관한 연구)

  • Kang, Soo-Young;Lee, Im-Yeong
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.18 no.2
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    • pp.21-31
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    • 2008
  • Ubiquitous environment is constructed by development of an IT technology, offer environment of many service changed to mobile environment. Also, existed service offered at fixed position like home or company, but according to development of mobile device. user require service as moving. Wibro can offer as user moving using mobile device. As requirement should be included authentication, in case of authentication between UICC and AAA authentication server is offered in Wibro, service is available. However, when UICC requires initial authentication to AAA authentication server, identification information of UICC expose as plaintext, so privacy infringement of mobile device occurs. Therefore, identification information of terminal generate randomly using OTP(One-Time Password) that generated in mobile terminal, and we proposed mechanism of privacy protection. Also, we proposed mechanism that offer secure service to user as offer authentication from OTP framework, and offer OTP combination authentication detailedly.

A research on remote X-ray detector design development for marketing in field diagnosis service (현장 진단 서비스 시장 공략을 위한 '무선 X-ray 디텍터' 디자인개발에 관한 연구)

  • Song, Seong Il
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.27 no.4
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    • pp.196-205
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    • 2017
  • In recent years, the service design in the medical sector evolves through practical service research and development that can visualize both intangible and intangible service elements in an integrative way and derive innovative solutions to help customers feel the service more important value. With the improvement of personal income, interest in medical welfare and well-being is increasing day by day, and the focus of the medical sector shifts from the concept of treatment of diseases and illness to preventive medicine. In response to this trend, research and development of home health care system, which greatly reduces the time and space constraint of health checkup and health care by combining ubiquitous concept with medical welfare, are being actively conducted, and the needs for improving products and medical environment based on user-centered medical service and user needs in accordance with the Health Care 3.0 Era, it becomes necessary to develop on-site medical diagnostic products that reflect user-centered needs and needs. This study is intended to research and develop a product that sufficiently reflects the needs of users by applying suitable materials and shape for on-site diagnostic product in researching and developing Wireless X-ray Detector.

A UPnP A/V Multimedia System using Prediction of Mobility for Mobile User (이동하는 사용자를 위한 이동성 예측을 이용하는 UPnP A/V 멀티미디어 시스템)

  • Kim, Kyung-Deok;Jung, E-Gun
    • Journal of Korea Multimedia Society
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    • v.12 no.11
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    • pp.1509-1520
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    • 2009
  • Contrary to ubiquitous environments, indoor computing environments like home network doesn't support user mobility. This paper suggests UPnP A/V multimedia system using prediction of mobility for adaption of seamless multimedia service. The multimedia system enables indoor mobile users to play multimedia contents by transferring the current session to an adjacent device automatically. The system represents users' contextual information by Five Ws and One H model, and predicts user's movements by using contextual information and transitions of locations. The prediction basically includes multiple locations so that it improves accuracy of prediction. We evaluated the suggested system using in accuracy of prediction, time for prediction, handover time for service, and the system showed that adapt ion of seamless multimedia service was enabled by using prediction of mobility on mobile user.

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A Mutual P3P Methodology for Privacy Preserving Context-Aware Systems Development (프라이버시 보호 상황인식 시스템 개발을 위한 쌍방향 P3P 방법론)

  • Kwon, Oh-Byung
    • Asia pacific journal of information systems
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    • v.18 no.1
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    • pp.145-162
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    • 2008
  • One of the big concerns in e-society is privacy issue. In special, in developing robust ubiquitous smart space and corresponding services, user profile and preference are collected by the service providers. Privacy issue would be more critical in context-aware services simply because most of the context data themselves are private information: user's current location, current schedule, friends nearby and even her/his health data. To realize the potential of ubiquitous smart space, the systems embedded in the space should corporate personal privacy preferences. When the users invoke a set of services, they are asked to allow the service providers or smart space to make use of personal information which is related to privacy concerns. For this reason, the users unhappily provide the personal information or even deny to get served. On the other side, service provider needs personal information as rich as possible with minimal personal information to discern royal and trustworthy customers and those who are not. It would be desirable to enlarge the allowable personal information complying with the service provider's request, whereas minimizing service provider's requiring personal information which is not allowed to be submitted and user's submitting information which is of no value to the service provider. In special, if any personal information required by the service provider is not allowed, service will not be provided to the user. P3P (Platform for Privacy Preferences) has been regarded as one of the promising alternatives to preserve the personal information in the course of electronic transactions. However, P3P mainly focuses on preserving the buyers' personal information. From time to time, the service provider's business data should be protected from the unintended usage from the buyers. Moreover, even though the user's privacy preference could depend on the context happened to the user, legacy P3P does not handle the contextual change of privacy preferences. Hence, the purpose of this paper is to propose a mutual P3P-based negotiation mechanism. To do so, service provider's privacy concern is considered as well as the users'. User's privacy policy on the service provider's information also should be informed to the service providers before the service begins. Second, privacy policy is contextually designed according to the user's current context because the nomadic user's privacy concern structure may be altered contextually. Hence, the methodology includes mutual privacy policy and personalization. Overall framework of the mechanism and new code of ethics is described in section 2. Pervasive platform for mutual P3P considers user type and context field, which involves current activity, location, social context, objects nearby and physical environments. Our mutual P3P includes the privacy preference not only for the buyers but also the sellers, that is, service providers. Negotiation methodology for mutual P3P is proposed in section 3. Based on the fact that privacy concern occurs when there are needs for information access and at the same time those for information hiding. Our mechanism was implemented based on an actual shopping mall to increase the feasibility of the idea proposed in this paper. A shopping service is assumed as a context-aware service, and data groups for the service are enumerated. The privacy policy for each data group is represented as APPEL format. To examine the performance of the example service, in section 4, simulation approach is adopted in this paper. For the simulation, five data elements are considered: $\cdot$ UserID $\cdot$ User preference $\cdot$ Phone number $\cdot$ Home address $\cdot$ Product information $\cdot$ Service profile. For the negotiation, reputation is selected as a strategic value. Then the following cases are compared: $\cdot$ Legacy P3P is considered $\cdot$ Mutual P3P is considered without strategic value $\cdot$ Mutual P3P is considered with strategic value. The simulation results show that mutual P3P outperforms legacy P3P. Moreover, we could conclude that when mutual P3P is considered with strategic value, performance was better than that of mutual P3P is considered without strategic value in terms of service safety.

Study on Context-Aware SOA based on Open Service Gateway initiative platform (OSGi플렛폼 기반의 상황인식 서비스지향아키텍쳐에 관한 연구)

  • Choi, Sung-Wook;Oh, Am-Suk;Kwon, Oh-Hyun;Kang, Si-Hyeob;Hong, Soon-Goo;Choi, Hyun-Rim
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.11
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    • pp.2083-2090
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    • 2006
  • In an proposed Context-Aware SOA(Service Oriented Architecture) based OSGi(Open Service Gateway initiative) platform, Service provider manages relative kinds of services in an integrative basis from various sensors, puts each service in a SOAP (Simple Object access Protocol) message, and register thorn to the UDDI(Universal Description Discovery and Integration) server of service registry, service requester retrivel the specified kinds of services and call them to service provider. Recently most context-aware technologies for ubiquitous home network are mainly putting emphasis on RFID/USN and location-based technology. Because of this, service-oriented architecture researches have not been made enough. Under the environment of an OSGi service platform, various context-aware services are dynamically mapping from various sensors, new services are being offered for the asking of users, and existing services are changing. Accordingly, the data sharing between services provided, management of service life cycle, and the facilitation of service distribution are needed. Taking into considering all these factors, this study has suggested an Context-Aware SOA based eclipse SOA Tools Platform using OSGi platform that can transaction throughtput of more than 546 TPS of distributional Little's Law from ATAM(Architecture Tradeoff Analysis Method) while remaining stable other condition.

Development and Implementation of the Emergency Call Program for a Welfare for the Elderly (노인 복지를 위한 응급 상황 호출 프로그램의 개발 및 구현)

  • Kim, Jung-Hwan;Cho, Myeon-Gyun;Kim, Shik
    • IEMEK Journal of Embedded Systems and Applications
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    • v.8 no.2
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    • pp.79-85
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    • 2013
  • This paper proposes a system that utilizes USN(Ubiquitous Sensor Network), Bluetooth and smart phone to improve the function of senior houses. In typical approach, a system in a senior house either directly accesses the status of elderly people by its sensor or is alerted by elderly people who trigger an emergency bell, derive a decision and take an appropriate action. In addition, it is possible for a designated social worker to check the status of senior patients through monitoring system connected by UTP(Unshielded Uwisted Pair) cables, but the responsible person has to be present to monitor patients' status. However, the new system, suggested in this paper, embed Bluetooth function in a blood pressure gauge, thus the smart phone receives patients' health information such as blood pressure through Bluebooth, if any abnormal event occurs. Consequently, the smart phone sends SMS(Short Message Service) to a responsible social worker or a designated hospital. When this program in the paper becomes a reality, an unmanned system that is able to determine suitable actions for certain events will be established, even if a social worker were absence.

Common Command-Scripting Language for network-based Robots (CCSLR) and Translator System Architecture (네트워크 기반 로봇을 조종하기 위한 공통 명령 프로그래밍 언어(CCSLR)와 번역 시스템 구조)

  • Lee, Il-Gu;Nguyen, Dong To;Kim, Do-Ik
    • The Journal of Korea Robotics Society
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    • v.2 no.1
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    • pp.48-54
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    • 2007
  • A network-based robot [1] is a robot that explores service servers in the network environment for analyzing sensor data and making decision. Since network-based robot architecture was proposed, it's possible to reduce costs of robots. We hope robots would be all around at home environment. Therefore, normal users who are not experts need to be able to control those robots by using easy commands. We developed a scripting language, named CCSLR, to help users and developers who control various robots in ubiquitous environment. We focused on how to design the common language for various robots and how to translate a CCSLR script into a sequence of low-level commands of the target robot. In this paper, we propose scripting methods, with three layers. The CCSLR system reads the profile information from the knowledge representation database. Users don't have to know all about kinematical and mechanical details of a robot. Then again, the CCSLR system will use the profile information to translate the script into separated executable library commands. The CCSLR system manages robot's changing state every time a robot executes a command.

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2.4GHz Short range Wireless Surroundings Measurement system within In-Vehicle environment for Telematics service (텔레매틱스 서비스를 위한 차량 내 2.4GHz 대역의 근거리 무선 통신 환경 측정 시스템 구현)

  • Hur, Soojung;Lee, Seunghwan;Park, Yongwan;Shin, Jeonghun
    • IEMEK Journal of Embedded Systems and Applications
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    • v.1 no.2
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    • pp.82-89
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    • 2006
  • It appears that it is possible for us to make a wireless communication of even home-network system within car by integrating with the Ubiquitous such as mobile phone, wireless Internet, GPS and DMB in the future. If the present wireless surroundings within the car are connected with very high-speed wireless network as measurement system for wireless communication surroundings within this car in the future, it will develop the complicated communication conditions such as safe checkup, communication between systems within car, and wireless communication for user entertainment unlike universal communication conditions. Accordingly, there is the necessity of the device that can measure the interference of electric wave, communication speed and communication quality by a kind of each car. This paper aims at making the real measurement device to raise the reliability of each Application for inquiring into the interference about each other in the frequency band used under Telematics surroundings.

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Implementation of Zigbee/PLC Gateway System for U-Health Care (유비쿼터스 헬스케어를 위한 Zigbee/PLC 게이트웨이 시스템 구현)

  • Kim, Sung-Yun;Kang, Kyung-Il;Kweon, Min-Su;Rhee, Young-Chul
    • The Journal of the Korea institute of electronic communication sciences
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    • v.5 no.3
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    • pp.332-338
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    • 2010
  • In this paper, Zigbee/PLC gateway system is designed for Ubiquitous health care. A protocol conversion algorithm for smooth information exchange between Zigbee and PLC communication has been implemented on the gatway. If a moving object is detected by wireless sensor, the data is transmitted to gateway. Zigbee/PLC gateway analyzes received data and transmits to Power Line Communication for real-time monitoring. Implemented system is can support elder who lives alone activity analysis, crime prevention system, Home network service.