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http://dx.doi.org/10.3745/KIPSTC.2006.13C.6.691

OSGi based Service Middleware for Context-Aware Applications  

Jung, Heon-Man (경인여대)
Lee, Jung-Hyun (인하대학교 컴퓨터공학부)
Publication Information
The KIPS Transactions:PartC / v.13C, no.6, 2006 , pp. 691-700 More about this Journal
Abstract
To support context-aware services in ubiquitous computing environments, there are required dynamic context managing, context reasoning and context modeling technologies. In previous researches, context services are designed using context ontology used in context aware middleware. So, context service cannot change the context ontology in execution time. In this paper, we propose a hierarchical ontology-based context management model and design a context-aware middleware based on this model for supporting active application adaptability and reflecting users' requirements dynamically in contextual changes. It also provides efficient support for inferencing, interpreting, acquiring and discovering various contexts to build context-aware services and presents a resolution method for context conflict which is occurred in execution of service. As the middleware is implemented on the OSGi framework, it can cause interoperability among devices such as computers, PDAs, home appliances and sensors. It can also support the development and operation of context aware services, which are required in the ubiquitous computing environment.
Keywords
Context-Aware Model; Context Ontology; Context-Aware Middleware; Open Services Gateway Initiative(OSGi); Ubiquitous Computing;
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