The democratization of the means of wireless communication coupled with advanced technological hardware can now offer portable devices that fit in the hand with a capacity of computation and means of wireless communication such as mini PCs, PDAs, mobile phones and even wireless sensors. Distributed multimedia applications are a challenge as they try to meet the constraints of the multimedia document, so that the network provides no guarantee of quality of service (QoS). We propose to adapt multimedia documents based on changes of context. In this paper, we present an architecture that aims at adapting content and presentation of multimedia documents in the context of the user. We develop an adaptation service cannot only detect and solve the problem of heterogeneity between incompatible components, but also to manage the adaptation with preferences of the user. We propose to see the adaptation as a nonfunctional property, provided by an administrator and handled by an adaptation manager QoS.

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