Requirements elicitation model for the context- aware pervasive systems

Abstract

A pervasive system focuses on the integration of computing devices into user‘s environments to develop a highly dynamic and heterogeneous software system. Pervasive system development is somewhat different because the software will require a highly adaptive behavior which inherently depends on the availability of different resources in an environment. The pervasive system requirement process is hence more complicated than the traditional approaches. In this research, we present a Meta-model that provides a platform to analyze requirements for a context-aware pervasive system and their possible interactions with a range of embedded devices in an environment. We extended the UML sequence diagram notation to represent the interactions details during the dynamic contexts. A prototype is developed to simulate these interactions based on the context rules elicited from the Meta-model. We show the usefulness of the Meta-model by applying it to a range of pervasive scenarios. The conducted comparison study shows the Meta-model is covering more pervasive aspects than the existing ones. The obtained observations ,lessons learned, validation results shows the robustness of the model , assist in expediting the pervasive development life cycle, and pave the way in developing a concrete pervasive requirement process.