국방정보화법 및 국방정보화업무훈령의 규정에 따라 정보통신기반체계의 연구개발에 단위시스템 아키텍처를 개발하도록 법제화되었으나, 아키텍처 구축 및 활용에 대한 지침을 제공하는 국방 아키텍처 구축 가이드 및 아키텍처 프레임워크에서는 기존 ITA의 범주를 벗어나지 못하고 정보체계 중심의 아키텍처 구축 지침만을 제공하고 있다. 따라서 점차 확대되어가는 기반체계 및 일반무기체계의 아키텍처 구축 요구에 상응하는 아키텍처 구축 방법론이 요구된다.
본 논문은 국방 아키텍처 관련 규정, 정보통신기반체계 아키텍처 사례 및 현재의 국방 아키텍처 프레임워크를 분석하여 요구사항 및 제약사항을 식별하고, 정보체계뿐 아니라 기반체계에 적용 가능한 아키텍처 프레임워크를 메타모델 중심으로 제시한다. 현재의 산출물 중심의 아키텍처 프레임워크는 데이터의 중복과 관계의 복잡성으로 인하여 기반체계를 포함한 무기체계의 아키텍팅을 수행하는데 구축의 어려움과 활용이 제한되는 문제점이 있다. 제안된 메타모델은 기존 MND-AMM v1.2의 기반체계 적용을 위한 요구사항과 상충되는 제약사항을 식별하고 이를 해결하는 논리적 구조를 제공한다.
메타모델의 개선은 아키텍처 프레임워크 개선의 핵심으로 아키텍처의 내용을 결정짓고, 아키텍처 구축의 효율성과 활용의 효과성을 결정짓는 요소라 할 수 있다.
아키텍처 프레임워크를 구성하는 메타모델은 다양한 이해관계자들의 관점을 반영하고 이들 간의 추적성을 확보할 수 있어야 한다. 또한 아키텍처 내부의 데이터 중복성 배제와 논리적 관계의 타당성 확보를 통해 아키텍처 구축 및 활용이 용이하여야 한다. 이것은 데이터 중심의 아키텍처 구축을 통해 구현되고 목적중심 아키텍처 산출물 활용을 통해 달성된다.
본 연구의 결과물로 제안된 메타모델은 기반체계에 대한 소요와 운용개념을 표현할 뿐 아니라 요구되는 능력에 대한 체계의 충족여부를 판단할 수 있도록 체계의 기능 및 성능에 대한 추적이 용이하도록 하였다. 이를 통해 정보교환, 연동, 표준화로 식별되는 상호운용성 확보의 기반정보를 제공하는 국방 아키텍처 본연의 목적을 달성하고 시스템 엔지니어링으로의 연계가 가능하도록 하였다.
본 논문을 통해 제안된 메타모델은 그동안 MND-AF v1.2 적용에서 지적되어 왔던 기반체계 아키텍처 구축의 문제를 해결 가능한 메타모델 수준의 문제로 정의하고 그에 대한 해결방안을 제안하며, 현행 MND-AF v1.2의 기반체계 적용에 대한 지침을 제공할 뿐 아니라 향후 능력영역 및 시스템 엔지니어링영역으로 확장하여 국방 아키텍처를 활용할 수 있는 기반을 개선하는데 기여할 것으로 기대한다.
또한 산출물 및 데이터 구조가 잘 정의된 표준 아키텍처 프레임워크를 통해 시스템 엔지니어링을 적용할 수 있도록 하여, 국내 국방 연구개발사업에서 필수적으로 수행하여야 하는 개발단계의 국방 아키텍처 구축과 시스템 엔지니어링 적용의 두 가지 의무를 동시에 달성하여 현재 제기되고 있는 단위시스템 국방 아키텍처 활용성 개선에 크게 기여할 것으로 기대된다.
Alternative Abstract
Under the relevant regulations, it is required to develop a system architecture for the research and development of the information and communication infra system ; however, the national defense architecture development guides and MND-AF, which provide the instructions on the development and utilization of a system architecture, are still limited to the ITA level and merely providing the guidelines for developing the information system centric architecture. Thus, it is evident that we need a suitable architecture development methodology that corresponds to the growing needs for the communication infra system architecture, as well as the general weapon system architecture.
The goal of this thesis is to improve the meta-model of the national defense architecture that is intended for the development of the weapon system such as the communication infra system. The communication infra system is included in the national defense information system. Although it is mandatory to develop and use the national defense architecture, the usage is still limited to satisfying requirements of the interoperability assessment criteria. Also, it is considered as a unnecessary additional task in R&D.
The architecture products are developed after covering various R&D products such as OCD, ICD, SSS and interoperability plan. The products, which are refined, based on the standardized expressions and data structure, can be complementarily provided to the R&D products. Moreover, the architecture products can be used to support the design process of systems engineering in varying ways. In particular, it is possible to use the architecture to carry out the model based systems engineering(MBSE) that are more standardized and reusable. Despite these strengths, the national defense architecture is not appropriately utilized in research and development projects of the communication infra system and the general weapon system. In this thesis, these problems are identified in the limitations of the meta-model that are defined in MND-AF v1.2
The current product-centric architecture framework has difficulties in developing and utilizing the weapon system architecting due to the complexity of the relations as well as the duplication of entity type. In particular, the current meta-model of MND-AF v1.2 is a product centric meta-model that requires repeating the definition of same entities. It is also difficult to express the weapon system that includes a hardware due to the limitations of ITA definitions created in the past. The important components such as hardware and communications devices are expressed as external system in the communication infra system architecture. Also, it is difficult to correctly identify data even if we followed the standardized information exchange relation rule for the interoperability analysis.
Improving a meta-model is the core of improving a architecture framework. It determines a contents of a architecture and it influences a efficiency and a effectiveness of a architecture. The proposed meta-model provides a logical structure that identifies the limitation and solve them.
The meta-model of the architecture framework must reflect concerns of various stakeholders and provide a traceability among them. Also, it should be easy to develop and use the architecture by securing the feasibility of the logical relationships and eliminating the duplication of the data inside the architecture. It is implemented through the development of the data-centric architecture and achieved through the "Fit-for-purpose" concept. In this thesis, the following improvements are applied to provide an enhanced meta-model.
● Simplification of the meta-model through resolving duplication and conflication
● Changes in the concept of the system that includes software as well as hardware
● Ensuring the traceability for supporting the design processes of systems engineering
● separating deployment concept to operational concepts and system structure analysis
● improving the consistency of the information exchange relations for the interoperability analysis
The proposed meta-model are categorized in 7 areas : all, operational, system function, system structure, technology, security, and data. These concepts are consistent with system design process of SE and they provide the correspondence rules regarding the development and usage of the national defense system architecture for the communication infra system as well as the weapon system. The proposed meta-model not only expresses the operating concepts but also provides the traceability of system functions and performances to validate whether the system satisfies the required capabilities. Through this, we can achieve the original goal of the national defense architecture that it provides essential information securing the interoperability such as information exchange requirements, interconnection and standardization. Also, it becomes possible to correlate with the systems engineering.
The proposed meta-model redefines and solves the problems that have been pointed out in applying the MND-AF v1.2. Also, it provides detailed correspondence rule for applying the current MND-AF v1.2, and it is expected to improve the foundation of the national defense architecture by extending its influences in the systems engineering area as well as the capability area.
In addition, through the standardized architecture framework with well-defined products and data structures, we make it possible to apply systems engineering. It is also expected to greatly improve the availability of the system architecture, which is currently in question. We will also meet the development of the national defense architecture and the application of the system engineering that are necessary for current national defense research and development projects.