Key features of systems beyond 3G are personalized communication spaces across a heterogeneous networking infrastructure , . Users will be able to access different service domains through a variety of terminals with adapted user interfaces and without being aware of the underlying heterogeneous technologies. The European research project Simplicity  is investigating these features by focusing on two main concepts: i) the introduction of a personal device simplifying the creation of a personalized communication space and ii) a networkbased Brokerage Framework supporting the adaptation of terminals, services and network resources. User scenarios were developed to explore and illustrate the potential of these concepts. The analysis of the scenarios highlighte
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