• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.8
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• pp.1612-1618
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• 2007

Requirement of coordination among heterogeneous devices is significantly increasing to meet the challenges presented by the evolvement of the ubiquitous computing environment. The web services technology is receiving much attention as a promising solution to support the inter-operability between such heterogeneous devices by means of well-defined protocol. Recenlty, ECA(Event-Condition-Action) rule-based framework for coordinating devices is proposed, which is called WS-ECA(Web Services-ECA) framework In this paper we propose a specific design and an implementation methodology for WS-ECA framework.

• Journal of Internet Computing and Services
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• v.8 no.6
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• pp.55-73
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• 2007

Importance of coordination among heterogeneous devices is significantly increasing to meet the challenges presented by the evolvement of the ubiquitous computing environment. The web services technology is going up as a promising solution to support the inter-operability between such heterogeneous devices via well-defined protocol. Currently, ECA(Event-Condition-Action) rule based framework for coordinating devices is proposed, it is called as WS-ECA(Web Services-ECA) framework. This framework was basically based on the web services and proposed the ECA based rule language, And this also proposed the framework that could enable the device coordination based on proposed rule language. In this paper, we propose the protocol among the components of WS-ECA framework to support dynamic feature for ubiquitous environment, and we also propose WSDL extension to support service and event descriptions these are provided in components of this framework.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.847-851
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• 2007

Finite automata는 실제 복잡한 컴퓨터의 연산을 수학적으로 모델링하는 computational 모델 중 하나로써 작은 메모리를 가지는 컴퓨터를 모델링하기에 적합하다. 이는 유비쿼터스 환경에서 실제로 작은 메모리를 가지는 장치가 ECA 룰을 작동시키는 디바이스 로직(디바이스 logic)을 효과적으로 운영할 수 있는지 여부를 검증하는 도구로 사용될 수 있다. 본 논문은 웹서비스 기반의 이벤트 처리 언어를 CFA로 모델링하고 알고리즘을 개발하였다.