Abstract

Context awareness is one of the most fundamental issues in pervasive computing. In this paper, an Ontology based Context Model is proposed, which defines high-level context ontology to provide basic concepts for sharing and managing context information. Our context model takes QoS and Security supporting into account. In addition, a context aware architecture based on semantic web service is proposed. In this architecture, web services are classified into several classes to act as the basic building blocks of a context aware system.

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