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Context-Aware Workflow Language based on Web Services for Ubiquitous Computing Environments  

Han Joohyun (숭실대학교 컴퓨터학과)
Kim Eunhoe (숭실대학교 컴퓨터학과)
Choi Jaeyoung (숭실대학교 컴퓨터학과)
Cho Weduke (아주대학교 전자공학부, 유비쿼터스컴퓨팅사업단)
Publication Information
Journal of KIISE:Computer Systems and Theory / v.32, no.11_12, 2005 , pp. 617-628 More about this Journal
Abstract
The services for ubiquitous computing environments have to provide automatically user-specific adaptive services in dynamically changed environments with many informations provided by both a user and his/her environment. Workflows used in business and distributed computing environments support service automation by connecting many tasks with rules or orderings of tasks. Therefore we must specify context information on transition condition to support context-aware services by adapting a workflow to ubiquitous computing environments. In this paper, we present a structural context model to specify context information on transition constraints of the workflow. And we propose an uWDL Ubiquitous Workflow Description Language) based on web services, which provides web service interfaces which are standardized and independent on heterogeneous and various platforms, protocols, and languages. The uWDL tan be interpreted and executed by a workflow engine, and provide users autonomic services based on context-awareness.
Keywords
Ubiquitous Computing; Context Awareness; Web Services; Workflow;
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