• 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.869-871
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• 2007

최근 유비쿼터스 환경으로 발전하면서 이종의 하드웨어와 소프트웨어 플랫폼을 가지고 있는 디바이스들 간의 연동 기술이 점점 중요해지고 있다. 이에 대한 연구 중의 하나로 웹서비스를 이용한 이벤트 기반 다바이스 연동 프레임워크가 있으며, 이는 XML을 기반으로 이벤트 기반의 다바이스 연동을 정의하는 룰 언어인 WS-ECA를 제안하고 있다. 그러나, 아직까지 WS-ECA를 효과적으로 작성할 수 있는 방법이 제시되지 않고 있다. 따라서, 본 논문은 비즈니스 프로세스에 대한 로직을 표현하는 데 가장 활용이 많이 되고 있는 BPEL을 WS-ECA로 변환하는 방법을 제안하며, 이는 BPEL 저작 툴을 이용하여 기본적인 디바이스 연동을 정의할 수 있으므로 효과적으로 WS-ECA을 생성할 수 있는 방법을 제공할 수 있다.

• The Journal of Society for e-Business Studies
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• v.14 no.1
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• pp.35-56
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• 2009

Many process modeling techniques, such as Petri-net, UML Activity Diagram, and EPC, are used to design process models. In this paper, we analyze ubiquitous process design based on workflow patterns. In particular, we focus on process design using active rules that have the form of Event-Condition-Action, and deal with the WS-ECA language, which was devised for ubiquitous web services coordination. We first check whether workflow patterns can be designed with ECA rules, and we then provide WS-ECA representations for ECA rules of the patterns. The contribution of this paper is that ECA rule-based process models were presented based on workflow patterns and they can be a guideline for ubiquitous process modeling.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.815-818
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• 2007

본 논문은 유비쿼터스 환경에서 다수의 다양한 이벤트가 모여 구성되는 ECA 룰 조건을 이용하여 동작하는 디바이스를 분석하였다. 그리고 디바이스에서 처리하는 시간제약이 있는 ECA 룰 조건 처리모형을 분석하고 디바이스가 동작을 처리하는 평균처리시간을 구하였다. 또한 디바이스가 셋 이상의 ECA 룰을 처리하는 경우에 대해 모형화하고 평균 ECA 룰 조건 처리시간을 구하였다.

• 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.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.7
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• pp.1459-1466
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• 2009

In ubiquitous environment, various and amount of sensor data information occur continuously and periodically about thing and user from RHO, sensor network of various space. Such, the users from among many of provider who provide sensor service should find service that themselves is wanted. And when service use, service right to user should be provided. But in the current environment of the USN(Ubiquitous Sensor Network) Application Service, there is no the registry to find these services but only business- oriented UDDI(Universal Description Discovery, and integration). In addition, when service use, service right to user should be provided but current services provided only services one of the conditions or events. Therefore, rules-based processing system of service event that can provide service according various conditions and events is need. In this paper research into service registry for sensor service search with reference to existing UDDI and event processing system for USN application service with reference to event rule based on web service as WS-ECA(Web Service-Event Condition Action).

• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.6
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• pp.1101-1105
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• 2006

Ubiquitous computing network comprises a variety of distributed service devices. Today Web services technology enables the heterogeneous devices to provide their own services and interact with each other via well-defined Internet protocol. Nevertheless, service devices in ubiquitous environments require more event-driven, autonomous interaction beyond rather passive service-oriented architecture of the present time. This paper presents an ECA (Event-Condition-Action) rule description language in an attempt to support capability for autonomous interactions among service-oriented devices in ubiquitous computing network. Specifically, the proposed WS-ECA is an XML-based ECA rule description language for web service-enabled devices. The rules are embedded in distributed devices which invoke appropriate services in the network if the rules are triggered by some internal or external events. The presented ECA-based device coordination approach is expected to facilitate seamless inter-operation among the web service-enabled devices in the emerging ubiquitous computing environment.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.10a
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• pp.327-330
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• 2008

Resently as ubiquitous environment rapidly emerges due to the development of network and information communication technology, ubiquitous computing is being noticed as a technology that will take the lead in information technology industry of the future. For the realization of this Ubiquitous Service requires some technique such as situations of environment and recognition of locations by the Sensor Network, then sensor data have to be transferred to an application service after processes. Also the creation rule of registration and search of the event is necessary because the USN sensor data must be possible to specific the multi condition of event which relates on using time. And for using a numerous sensor data provision service, service provider can publish its service in standardized registry for users to search and use the service registry. Currently there is the web service for a WS-Eventing and a UDDI with standard, but the event and the service registry is unnecessary or there is a portion which is insufficient. In this paper, I design and implementated standardzation of event definition for USN application service and service registry structure, standard API.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.853-856
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• 2008

With development of computer network technique it joins in recently and ubiquitous computing comes true the research for is actively advanced. The creation rule of registration and search of the event is necessary because the USN sensor data must be possible to specific the multi condition of event which relates on using time. And for using a numerous sensor data provision service, service provider can publish its service in standardized registry for users to search and use the service registry. Currently there is the web service for a WS-Eventing and a UDDI with standard, but the event and the service registry is unnecessary or there is a portion which is insufficient. In this paper, we studied standardization of event definition for USN application service and service registry structure, standard API.