• Information and Communications Magazine
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• v.30 no.3
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• pp.22-28
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• 2013

오늘날 미래인터넷 기술의 하나로서 SDN이 클라우드 서비스, 모바일 서비스, 스마트 TV, 빅데이터 및 사물지능통신 등의 새로운 서비스를 제공할 수 있는 개방형 플랫폼으로 주목받고 있다. 본고에서는 이러한 SDN 망을 구축함에 있어서 제어 인터페이스, QoS, 멀티캐스트, 이동성 및 네트워크 보안 측면에서 고려해야 할 사항들을 살펴본다. 기존 네트워크의 근본적인 문제점으로 인해 발생한 복잡성 및 성능 저하 요인들이 SDN의 장점을 활용하여 해결될 수 있으며, 이에 본고에서 제시된 고려 사항들이 큰 역할을 할 것이다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.10a
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• pp.685-688
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• 2008

A Next Generation Network (NGN) is a packet-based network able to provide services including Telecommunication Services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. It offers unrestricted access by users to different service providers. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users in this paper. we describe the trend of standardization activity related with open services environment capabilities which had been finally approved at September 2008 in ITU-T. ITU-T SG13 is responsible for studies relating to the architecture, evolution and convergence of next generation networks including frameworks and functional architectures, signalling requirements for NGN.

• Information and Communications Magazine
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• v.31 no.4
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• pp.44-52
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• 2014

사물에 부착 또는 내장되는 IoT 디바이스는 센서/액추에이터, 전원모듈, 디바이스 플랫폼, 통신모듈, 네트워크 및 지능화 기술로 구성되고 서비스 환경과 유형에 따라 매우 다양한 형태로 개발되고 있다. 최근에 스마트 폰과 연계되는 개인화 서비스를 중심으로 다양한 IoT 디바이스 제품과 개방형 디바이스 플랫폼이 출시되고 있으며 스마트 디바이스에 센서를 가상화 시켜 다양한 센서 앱 개발이 가능한 플랫폼이 개발되고 있다. 또한 에너지, 환경, 산업 분야로 적용을 확대하기 위한 수 Km 통신, 10년 이상의 배터리 수명, 고신뢰 제어, IPv6 기반의 네트워크, 집중된 데이터를 유연하게 분산 처리하기 위한 네트워크 및 전원공급 문제 해결을 위한 에너지 하베스팅 기술 개발 등이 활발하다.

• Convergence Security Journal
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• v.15 no.5
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• pp.23-28
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• 2015

This study was carried out the exercise monitoring utilizing mobile device which is easily accessible and personalized exercise prescription based on it. For this, a variety of exercise monitoring and status of those were investigated and suggested the potential of personalized exercise prescription. If individual users send their body and vital informations using a mobile device, all informations are collected in u-Fitness center. After then exercise expert provide a customized prescription based on the collected information and feed data into database of u-Fitness center. System of U-Fitness center will provide the best personalized exercise prescription by automatically connecting to the content providers. In the future, a variety of mobile devices and services will work together and it can be evolved as an open platform that can be used for multiple services according to the needs of individual users on a single platform.

• Journal of Cadastre & Land InformatiX
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• v.44 no.1
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• pp.113-125
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• 2014

According to the public open data policy, the government established the demanders-oriented and customized open data plan and allowed people to use plenty of public data free. There are, however, few geospatial information systems to maximize its usability. For the purpose to make the effective geospatial information services, this study examined how data was linked between the public data portal and open platform first. And then this proposed the interface server model to support the data link between these systems technically.

• Proceedings of the IEEK Conference
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• 2007.07a
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• pp.173-174
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• 2007

최근 디지털 정보기술의 급격한 발전으로 네트워크, 서비스, 단말이 융합되는 BcN 사회로 진화하고 있다. 이에 따라 새로운 융합 서비스 개발을 용이하게 하는 open API 기술에 대한 필요성이 대두되어 왔다. 통신망 사업자의 자원을 서비스 제공자에게 open API를 통하여 개방하면, 서비스 개발자들은 네트워크 프로토콜에 대한 지식이 없어도 open API를 호출하여 복잡하고 다양한 서비스를 쉽게 개발할 수 있다. 본 논문에서는 이동 가입자의 위치주소를 제공하는 Geocoding 기능을 open API로 정의하고, 이를 응용한 Family Finder on TV 서비스에 대해 살펴본다.

• Journal of Advanced Navigation Technology
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• v.20 no.6
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• pp.562-567
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• 2016

IoT is attracting attention as the development of the Internet and the spread of smart devices are rapidly increasing worldwide. As IoT is integrated into everyday life, the market is getting bigger. So, experts predict that IoT devices will grow to more than one trillion in a decade. Techniques related to IoT are also being developed steadily, and studies are underway to develop IoT in various fields. However, vendors launching IoT services do not interact with data from other platforms. Therefore, it is limited to growing into a big market by facing the obstacle called the silo phenomenon. To solve this problem, web technology attracts attention. Web technology can interact with data regardless of platform, and it can not only develop various services using the data, but also reduce unnecessary costs for developers. In this paper, we have studied a web - based open IoT system that can transmit data independently in real time to the IoT platform.

• The KIPS Transactions:PartC
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• v.18C no.4
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• pp.227-236
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• 2011

IPTV(Internet Protocol Television) is one of the typical businesses which are the convergence of Broadcast and Communication. It provides broadcasting service using IP networks. Recently, IPTV service is developed to Mobile IPTV or Open IPTV. Especially, Open IPTV uses open platform so not only service providers but also general users can provide contents to other users. Open IPTV system has many content providers, so existing security solution of IPTV cannot be adopted. In this paper, we suggest user authentication and key distribution mechanism on Open IPTV. Our proposed mechanism is based on Kerberos, so it can support distribution environment such as Open IPTV. We demonstrate that proposed mechanism can guarantee secure transmission of contents and reduce the delay of user authentication on Open IPTV system compared to other authentication mechanisms. We also compare our proposal and other mechanisms in various aspects, and analyze efficiency and safety of proposed mechanism. As a result, we insist that this mechanism satisfies the security requirements for IPTV.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.4
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• pp.177-183
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• 2015

The purpose of ICT Healing platform is the prevention of chronic disease. It is intended to early warning of the disease through the information such as the bio-signals and lifestyle. In this paper, we provide a 2-Step open system(TOS) for personalized health data access. TOS is connected between the personal health related data providers and service providers of individuals ICT Healing platform, a software engine for relaying personalized health data. The proposed system, to operate in isolation to 2 step in personal health document repository Inbound module and Outbound module to provide an inquiry service to external organizations. Therefore, we propose a personalized editable Manifest concept for defining data exchange between Step. This can be used as a reference model to collect the personal health information is scattered in many health related service institutions (Hospitals, Fitness Centers, Health Examination Centers, Personal Health Device, etc.) and under private-led liberalization.

• The KIPS Transactions:PartC
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• v.9C no.2
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• pp.213-220
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• 2002

Distributed competing system gives a new system architecture to be taken into consideration for solving the problems of interoperability of heterogeneous systems. In the present paper, CORBA based on multi-threaded interoperates with software blocks at physically isolated hardware. We show how archives optimal CORBA system from analysis of required functions, implementations of protocols and benchmarking of system performance in the Open Multi-service Network System Environment. The core features of our CORBA system are restricted Quality of Service based on priority, timeout service and exception status information notify to the related software blocks. And the objectives are design and implementation of high performance multi-threaded middleware and satisfied with extendibility, flexibility and stability of CORBA platform.