On context modeling in ambient assisted living

Within Ambient Assisted Living (AAL) context awareness is an important feature o f intelligent user supporting services. In this domain different requirements re garding context modeling can be identified that are not in the focus of current context models. A consistent modeling approach is needed that supports different aspects of using context: dynamic integration of context sen-sors into a smart home environment, definition of service specific context mod-els and end user in terface for describing context dependent service behaviour. Current context mode ling approaches do not fully meet these requirements. In this paper we introduce a three layer context model for AAL.