• Journal of the Institute of Electronics Engineers of Korea CI
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• v.47 no.6
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• pp.131-138
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• 2010

As ubiquitous computing environments evolve, various services are being provided as customer-centric services. In the past, studies based on personal profiles have been conducted to provide personalized services. However, identifying the user's preferences and supporting personalized services requires considerable data and time. To solve these problems, this paper proposes a system which provides the service by analyzing the user's emotions, rather than personalized service with personal profiles. In the proposed system, both speech analysis method and image analysis method are used to analyze the user's emotion. By using this emotion analysis method, we implemented the proposed system within the home network environment and finally provide effective personalized service.

• The Journal of the Korea Contents Association
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• v.9 no.5
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• pp.118-127
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• 2009

The current global spread of communal residential culture and the trend of continuing increase of newly built apartment environment are increasing the demand of home network products for each residential space and among households. The continuing advancement of ubiquitous and the introduction and development of home network system are promoting the demand for the product design. The residential culture change and the apartment interior design change are having mutual effects on the lifestyle of residents and the product design and demand new product design. Coordination with interior products, interior style and products, product and fashion design and reconstruction and fusion between the products and their element factors are the core element of this design study. Based on this, integrated design strategy and concept research and analysis were studied for the design process, and have been expressed in three dimension design through which the design functionality and the external aesthetical design can correspond to each other. It's because the aspect of the future development prospect can be predicted in detail by presenting practical design plan.

• The Journal of the Korea Contents Association
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• v.10 no.6
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• pp.80-90
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• 2010

In this paper, we introduce some issues to implement an agent system to support service mobility in home network environment, and describe detailed design method in terminal as well as server agent. Specifically, we describe user recognition module, signaling message receiving/parsing module of terminal agent and signaling message receiving/parsing module, multimedia switching module, memory management module of server agent. We define several parameters managed in IP sharing device and design binding table structure to support mobility. And we utilize M/M/1/K queueing theory to obtain relations between memory size, blocking probability and memory utilization. From the obtained results, we show that memory size can be predicted in server agent mounted on IP sharing device.

• The Journal of the Korea Contents Association
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• v.16 no.3
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• pp.296-304
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• 2016

Recently in domestic market, the telecommunication and appliance companies actively provide IoT home service through their dedicated smart device and communication network. But because their service should use only their own devices and be payed by monthly, it does not satisfy user's needs. So, users want device and service environment that can be easily configured according to user needs. Therefore, in this paper, we propose IoT home service environment architecture and ACOME(Auto-Configuration of MQTT and REST) mechanism. The proposed architecture consists of IoT platform and IoT home gateway. And the ACOME provides the automatic registration using DPWS function and interface construction using MQTT. This implements as a library for open-source hardware such as Arduino that is easy to get on the market. So the user easy to make own IoT device. Finally, we provide performance evaluation about service and device discovery between ACOME and DPWS.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.47 no.7
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• pp.8-17
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• 2010

Ubiquitous home refers not only to home but also to logical space, including a wide range of out-home personal devices such as mobile phones, PDAs, laptops, car navigators, and office PCs. There are certain connection barriers among the devices, such as the dynamic IP address, NAT. In a home network, various devices coexist in heterogeneous networks, such as IP, IEEE1394, PLC, Bluetooth, ZigBee, UWB, and IrDA, all of which lack interoperability due to their different physical transmission characteristics and protocols. In ubiquitous home where an unrestricted collaboration of the devices is essential to offer services that meet the users' requirements, free interoperability among the devices must be guaranteed. This paper proposes a networking model for interoperability of the heterogeneous devices in a ubiquitous home based on a virtual overlay network which hides the complicated physical network configurations and heterogeneity of the service protocols.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.6
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• pp.1091-1098
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• 2009

In this paper, we designed the authentication system for home network service and applied it to actual sensor nodes. The pair-wise pre-distribution key skim is applied for prevention of authentication key from sniffing on the wireless sensor networks. The authentication key and data are encrypted by using the CBC mode RC5 algorithm based on the SPINS. The experimental environment consists of a base station (BS)and sensor nodes and each sensor node sends both sensing data and the encrypted authentication key to the BS. For simulations we set up some what-if scenarios of security menaces in home network service.Slightly modified the TOS_Msg data arrays of TinyOS is suggested to store 8-byte authentication key which can enable data encryption and authentication at the each sensor node. As a result, malfunction caused by communication between BS and nodes of other groups of added nodes having malicious purpose can be protected. Also, we confirmed that a critical data of home networking service like vital signal can be transmitted securely through this system by encryption technique.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.8
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• pp.1860-1868
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• 2009

As general use of Mobile devices, the integration operations between the Home network is active. For popularization of Home network interface of normalizing in user's use convenience offer must, and developer must be able to cope sensitively in change development and requirement, hereafter such as maintenance with normalized interface environment. In the case of Home network, because several terminal information devices have to be used to a Home server, user establishment and exclusion should be easy and should adapt fast in requirement alteration and maintenance. In this paper, we designed and implemented mobile home network components with applied efficient information transmission interface that can be applied to the various application of OSGi platform. These components can respond quickly of user requirements and maintenance and that can be reuse and evolved.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.10a
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• pp.76-81
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• 2008

최근 유비쿼터스 환경을 실현하는 기술로서 사물 및 환경 정보를 센싱하여 필요한 정보를 수집 및 분석. 처리하는 센서네트워크 기술에 대한 관심이 고조되고 있다. 특히 최근 국내에서는 u-City와 u-Port 사업 등, 범국가적인 차원의 도입을 통해 환경 정보 모니터링, 홈 자동화, 자산 물류 응용 등의 다양한 센서네트워크를 이용한 서비스가 등장하였다. 이러한 기존의 응용서비스는 모든 센서노드가 고정되어 있는 환경에서 응용 대상의 데이터를 수집하는 서비스가 대부분이다. 그러나 동물의 생태 모니터링 등의 응용을 위해서는 센서를 움직이는 대상에 부착하여 이동하는 센서노드로부터 효율적으로 데이터를 수집하기 위한 연구가 필요하다. 따라서 본 논문에서는 이동하는 센서로부터 효율적으로 데이터를 수집하기 위하여 이동노드 색인 기법을 설계한다. 아울러 제안하는 색인 기법을 위한 영역질의 처리 알고리즘을 제시한다.

• Proceedings of the IEEK Conference
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• 2005.11a
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• pp.1247-1252
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• 2005

Recently, Ubiquitous Computing is being actively researched and one of the main technology in ubiquitous computing environment is recognized as RFID system. The RFID system is automatic recognition technique using radio frequency that attached a tag to product read information and able to record without physical contact. In this paper, classification of tag, an operation, structure and etc of the RFID system and described on the 900MHz region radio antenna radiation characteristics.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10c
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• pp.535-537
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• 2004

최근 논의되고 있는 디지털 홈 네트워크는 유무선 통신 프레임워크를 기반으로 사용자 디바이스간 다양한 정보 공유 및 멀티미디어 컨텐츠 교환의 활성화가 예상되며, 대부분의 사용자는 자신이 구입한 권한 정보를 가족 또는 친구 등과 공유 가능하게 할 수 있는 형태의 유연한 서비스를 요구하고 있다. 본 연구에서는 이러한 홈 네트워크 환경에 대해 사용자 소유의 디바이스로 구성된 도메인에서의 권한 정보 관리 기법을 제안한다. 제안한 기법은 정당한 사용자 도메인의 디바이스에 대해 보유하고 있는 권한 정보 한도 내에서 DRM 포맷에 독립적으로 해당 디바이스를 위한 권한 정보를 생성 및 기존 권한 정보의 상태 정보에 대한 업데이트를 수행하며, 이때, 사용자 디바이스의 성능을 고려하도록 하였다.