A Distributed Architecture for Dynamic Context Awareness in UbiComp

Ubiquitous Computing (UbiComp) environments are characterized by high distribution, heterogeneity and dynamism. In these environments, applications must be aware of their contexts and adapt to changes in them. Considering these characteristics of ubiquitous environments, this paper presents an architecture for context awareness, called DynamiCA (Dynamic Context Awareness), which includes elements to support contextual data collection, environment actuation, and processing of contextual information. We consider that the main contribution of this work is the proposal of an architecture that supports acquisition, storage, processing, and dissemination of context, in a distributed way, independently of the application, in autonomic and rule-based perspective. To assess the functionality of the proposed architecture, we present a case study, highlighting prototyping performed, technologies employed, and tests realized.