Real-time Reusable Event-Driven Architecture for Context Aware Systems

Context Aware Systems (CAS) support mobility of users and make context reasoning efficiently to provide relevant and real-time information. CAS should be particularly adaptive and aware by managing and responding properly to occurring events. Due mainly to the presence of numerous sensors and access to several communication networks, Context-awareness has been successfully included in the mobile device applications such as mobile and tablets. According to this fact, CAS are applied in many areas such as healthcare, transportation, education and etc. However, a reference descriptive model with respect to the capability of reusability and real-time processing and delivering the efficient service has not been considered yet. In other words, it's necessary to deploy a robust and multipurpose architecture which supports all requirements of CAS such as on demand processes and real time interactions. In this paper, the main objective is to design general purpose architecture for context aware systems which covers the CAS requirements and facilitates development of context-aware applications. Context-aware processing is a natural result of such architecture which enables the integration of context reasoning in event based systems. This architecture can be used in any environment such as healthcare, transportation, education and etc. In this paper, first we describe our architecture, related components and relationships between these components. Then, the some parts of the architecture are applied and implemented for a healthcare prototype in the hospital or home domain.