An Ontology Based Context-Aware Model for Semantic Web Services

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.