Context-awareness has been considered as promising topic in pervasive computing area, but a review of the existing approaches shown that developing diverse application services in this area is still motivated based on the analysis of existing approaches in literature. This paper proposed a context-aware system, which can provide more specific information and services about the situation where you may arrange a business meeting as a case study. In developing a context awareness application, we adopted an approach that selects and combines the strengths of the reviewed methodologies. As an infrastructure for supporting this development, a framework architecture prototype was constructed. Especially, we focused on ontologies which make it possible to reason semantic notion.