• The KIPS Transactions:PartD
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• v.9D no.3
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• pp.409-416
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• 2002

The reuse by using framework is proposed to improve productivity. It is a set of usable and expandable classes and their connectivity. But frameworks are described with programming languages, it is hard for developers to learn the collaborative patterns of a framework by reading it. Patterns are one approach to improving the documentation. But this should be redesigned to expand and redefine the framework. The necessity of the formal description of architecture information is being proposed to relate to programming language. This paper support the following points. First of all, it has been proposed the description of the needed elements when developing a framework using ADL. Secondly, the current development process has been refined to be suitable for developing the domain framework. Thirdly, it has been proposed the development of a application using a framework implemented by an architecture information described with ADL. Overalls, the main contents of this research is defining the ideas of a description and development of an architecture framework using ADL.

• Electronics and Telecommunications Trends
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• v.31 no.1
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• pp.1-13
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• 2016

5G는 2020년 이후를 위한 4G 다음 세대의 이동통신으로 검토가 시작되었으나, 이동통신의 연장선이 아닌 이동통신과 네트워크의 새로운 패러다임으로 인식되고 있다. 5G는 이동통신, 인터넷, 클라우드가 통합되는 네트워크 + IT 환경이 될 것이며, 기술, 서비스, 타 산업과의 관계, 시장, 사업구도 등 모든 면에서 새로운 변화가 예상된다. 본고에서는 2016년을 기점으로 본격화될 5G의 아키텍처에 대한 최근 연구동향을 정리한다. 아키텍처의 범위는 Radio Access Network(RAN) 아키텍처, 코어네트워크 아키텍처, 가상화/프로그래머블 아키텍처, 네트워크 관리 자동화/지능화 아키텍처 등이다. 주요 연구프로젝트, 통신사업자, 산업체 등에서 제안한 5G 아키텍처 현안들을 각각 정리한다.

• Informatization Policy
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• v.18 no.1
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• pp.73-99
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• 2011

The Korean military has developed and operated computer, network, communication technologies as well as war game models to strengthen the national defense M&S continuously. In particular, lots of projects for developing models for drill/training, analyses, and acquired fields are being conducted in the military. However, it needs to look into the actual conditions and seek for strategies to develop the national defense M&S. First of all, in the field of war games, various national defense architectures have been built, including war and information environment architectures starting from the resource architecture in 2006. However, the function of drill and training is limited, so additional war game architectures are required to be built. To build joint war game architectures available as an effective verification tool to implement plans of the national defense and war architectures, this study examines the actual conditions of the current war game systems and suggested building joint war game architectures.

• Journal of the Korean Society for Railway
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• v.11 no.1
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• pp.101-106
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• 2008

Recently, Architecture Frameworks are used to develop Information Management System (IMS). This paper describes an operational architecture development method for railway system safety assessment. using DoDAF (Department of Defense Architecture framework). The need of IMS is increasing to perform safety assessment task effectively and efficiently as safety-critical system like railway System. It is necessary that operational architecture based IMS requirements generated fir safety assessment. ARP(Aerospace Recommended Practice)4761 are referred to develop safety assessment operational architecture applicable to railway system. Firstly, schema and template was developed to perform the operational architecture development process using a commercial CASysE(Computer-Aided Systems engineering) tool, CORE. Not only the operational architecture allows building flexible IMS, but also helps business process solving.

• Journal of Internet Computing and Services
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• v.6 no.4
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• pp.9-20
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• 2005

To design a software system in success, architectural approaches which are in basis of architectural design, must be primarily selected. What to chose among various architecture styles as specific as architectural approaches, varies along with the system status of what kind of functional or non-functional quality requirements should satisfy. In this study, we propose the evaluation model for making a selection of architectural approaches, and select an architectural approach for message system actively using in diversified internet utilization and enterprise application integration, In other words, if there may be possibly existed several architectural approaches, we present the most suitable method of architectural approach out of them through an evaluation of analyzing the system requirements satisfaction level. In addition, when it performs specific design and implementation utilizing design patterns based on thread, developers would be able to link up the architecture design directly.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.1
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• pp.82-95
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• 2007

The paper focuses on how to classify as well as to define the Architecture Patterns which are popularly used in the design of software architecture. In order to achieve this purpose, we propose not only the revised methodology for Pattern-Oriented Software Architecture Design, but also new method of classification and definition for the Architecture Patterns. Especially, because the patterns are so diverse depending on the level of abstraction and types of applications, it was considered to have some different views of classification of the patterns in order to support convenient access to classified and stored patterns. The abstraction of the pattern is another important result of the research, which is devised for concrete expression of the patterns and for presentation of the interrelation among group of the patterns. The research also includes the extension of the quality model popularly adopted in the software domain, which enables the description of the patterns with the well defined quality attributes in terms of software architecture's point of view.

• Journal of Information Technology and Architecture
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• v.10 no.4
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• pp.435-449
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• 2013

The performance of Enterprise Architecture (EA) in the Korea's public IT domain produces mixed results and responses. On the one hand, EA earns positive remarks and enthusiasm as a central government-wide IT governance framework with its significant IT budget saving records. At the same time, however, the response to EA at the department and agency level is tainted with disappointment, fatigue, and reluctance. This essay suggests that this is perhaps caused by the sterile lackluster concept of EA Business Architecture employed in the current EA practice of the enterprise. The possibility for liberating and reviving the concept of EA Business Architecture is explored. Various conceptual axes and branches of EA Business Architecture are identified based upon extensive EA field experience and observations, and discussions are made on how the concept of EA Business Architecture can be expanded and amplified on those conceptual axes and branched. The resulting EA Business Architecture conceptualization is consolidated into an illustrative typology for EA Business Architecture. In the end the theoretical and practical implications of the research are discussed along with its contribution and limitation.

• 한국IT서비스학회:학술대회논문집
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• 2008.05a
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• pp.349-355
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• 2008

2006년 07월 정보시스템의 효율적 도입 및 운용을 지원하기 위해 ITA/EA 구축이 법제화 된 이후 ITA/EA 구축 기관의 수가 급격히 증가하고 있는 추세이다. 행정안전부의 자료에 따르면 2007년 10월 기준으로 약 36개 기관이 ITA/EA를 도입하였으며, 향후 총 49개 중앙행정기관, 총 16개 광역지방자치단체가 ITA/EA 도입계획을 제출하였다. 향후 5년간($2007{\sim}2011$) 약 1900억 원에 이르는 소요예산이 계획되어 있다. 그러나 활발한 구축 열기에 비해 기 구축된 아키텍처 정보의 관리 및 활용에 대해서는 다소 미흡한 부분이 있다. 행정안전부가 발표한 ITA/EA 기 구축 기관의 ITA 성숙도 측정결과 총 4개의 성숙도 측정 영역(투입, 산출, 관리, 활용) 중 "관리", "활용" 두개 영역의 성숙도가 가장 떨어지는 사실이 이를 반증하는 결과이다. 이러한 이유로 아키텍처 정보의 관리 및 활용에 대한 이슈는 최근 ITA/EA 추진하는 조직의 최대 관심사가 되고 있다. 넥스젠엔씨지는 이러한 현행의 ITA/EA 추진의 이슈를 해결하기 위한 방안으로 기 구축된 아키텍처 정보의 현행화를 위한 ITA/EA 현행화 프레임워크(NAMF)와 구체적인 현행화 절차를 개발하였다. 또한 최근 이를 적용하여 대규모 아키텍처 정보에 대한 현행화를 완료하였다. 넥스젠엔씨지의 아키텍처 현행화 방법론과 적용 사례는 현재 ITA/EA 도입을 계획하거나, 기 도입한 조직의 아키텍처 정보 현행화 이슈 해결하는데 이바지 할 것으로 기대된다.

• Journal of KIISE
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• v.42 no.3
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• pp.341-360
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• 2015

While architectural patterns provide software development solutions by providing schemas for structural organizations of software systems based on empirical knowledge, Jackson's problem frames provide a method of analyzing software problems. Problem frames are useful to understanding the software development problem, by putting emphasis on the problem domain, rather than on the solution space. Research exists that relates problem frames and software architecture, but most of this research uses problem frames only to understand given problems. Moreover, none of the existing research derives architectural patterns by considering both problem frames and quality attributes. In this paper, we propose a software architecture design method for pattern-based architecture design, by matching problem frames and architectural patterns. To that end, our approach first develops the problem model based on the problem frames approach, and then uses it to match with candidate architectural patterns, from the perspectives of both functionality, and quality attributes. Functional matching uses the problem frame diagram to match the problem model of an architectural pattern. We conduct a case study to show that our approach can systematically decide the right architectural patterns, and provide a basis for fine-grained software architecture design.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.5A
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• pp.743-750
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• 2000

In this paper, low-power block filtering architecture for digital If down sampler and up sampler is proposed. Software radio technology requires low power and cost effective digital If down and up sampler. Digital If down sampler and up sampler are accompanied with decimation filter and interpolation filter, respectively. In the proposed down sampler architecture, it is shown that the parallel and low-speed processing architecture can be produced by cancellation of inherent up sampler of block filter and down sampler. Proposed up sampler also utilizes cancellation of up sampler and inherent down sampler of block filtering structure. The proposed architecture is compared with the conventional polyphase architecture.