The KIPS Transactions:PartC (정보처리학회논문지C)

Korea Information Processing Society (한국정보처리학회)
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An MDA-Based Adaptive Context-Aware Service Using PARLAY X in Ubiquitous Computing Environments

유비쿼터스 컴퓨팅 환경에서 PARLAY X를 이용하는 MDA기반의 적응성 있는 문맥인식 서비스

  • Published : 2005.06.01
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Abstract

This paper describes an Adaptive Context-aware Service (ACS) using Model Driven Architecture (MDA)-based Service Creation Environment (SCE) on PARLAY X based service delivery platform in ubiquitous computing environments. It can be expected that both the context-awareness and adaptation in ubiquitous computing environments will be deployed. But the existing context-aware middleware lacks in considering adaptation. Therefore, the object of this paper is to support the architecture and the Application Programming Interface (API) of the network service for both the context-awareness and adaptation in ubiquitous computing environment. ACS is to provide users with the adaptive network service to the changing context constraints as well as detecting the changing context. For instance, ACS can provide users with QoS in network according to the detected context, after detecting the context such as location and speed. The architecture of ACS is comprised of a Service Creation Environment (SCE), Adaptive Context Broker and PARLAY gateway. SCE is to use Context-based Constraint Language (CCL) for an expression of context-awareness and adaptation. Adaptive Context Broker is to make a role of the broker between SCE and PARLAY G/W. PARLAY G/W is to support API for PARLAY X-based service delivery platform.

본 논문은 유비쿼터스 컴퓨팅 환경에서 PARLAY X기반 서비스 전송 플랫폼상의 MDA(Model Driven Architecture)기반 SCE(Service Creation Environment)를 이용하는 ACS(Adaptive Conte저-aware Service)에 관하여 서술하였다. 유비쿼터스 컴퓨팅 환경에서는 망 수준에서 문맥인식성과 더불어 적응성이 요구된다. 그러나 기존의 문맥인식성 미들웨어는 적응성에 대한 고려가 부족하다. 그러므로 본 논문의 목적은 유비쿼터스 컴퓨팅 환경에서 문맥인식성과 적응성이 동시에 지원 가능한 PARLAY X기반의 신규 망 서비스 구조 및 PARLAY X API를 개발하고자 하는 것이다. 본 논문에서 제안한 ACS(Adaptive Context-aware Service)는 사용자 주변에 변화하는 문맥 제약조건을 감지하고, 변화하는 문맥 제약 조건에 따라서 적응성 있는 망 서비스를 제공하는 것을 의미하며, ACS를 이용하는 예로 위치와 속도 등의 문맥정보를 인식한 후, 사용자에게 망에서 문맥정보에 따라서 적합한 차별화된 QoS를 지원하는 경우를 보였다. An의 구조는 SCE, Adaptive Context Broker, 그리고 PARLAY G/W로 구성되어 있다. SCE는 기존 지능망의 망 서비스와 같은 망 서비스로서 문맥인식성과 적응성을 표현하고 지원하기 위한 망 서비스 개발 환경으로 본 논문에서는 CCL(Context-based Constraint Language)을 이용하였다. Adaptive Context Broker는 SCE의 문맥인식성 및 적응성 표현과 기존 PARLAY G/W사이의 브로커 역할을 한다. PARLAY G/W는 PARLAY X기반의 서비스 전송 플랫폼을 위한 API(Application Programming Interface)를 제공한다.

Keywords

References

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