Resource Trading Agents for Adaptive Active Network Applications

Adaptive applications seem to be the only realistic answer to the increasing diversity and decentralisation in networks. In order to accommodate fluctuations in network conditions, adaptive applications need to obtain information about resource availability. Using mobile agent technology applied to active networks, new models for adaptive applications can be envisaged. In this article we review the state of the art in agent and active network techniques for adaptive applications, and describe our work on an agent model for trading resources inside an active network node. We apply the model to the case of an audio mixing application. Our simulation results indicate that the model allows the application to make efficient use of the available resources, and to share resources according to user preferences. RESUME: Les applications adaptatives semblent etre la seule reponse realiste a la diversite et a la decentralisation toujours croissante dans les reseaux. Afin de pouvoir s'adapter a des fluctuations dans les conditions du reseau, les applications adaptatives ont besoin d'information sur la disponibilite des ressources dans le reseau. En appliquant la technologie des agents mobiles aux reseaux actifs, de nouveaux modeles pour les applications adaptatives peuvent etre envisages. Dans cet article nous revisons l'etat de l'art des techniques basees sur les agents et les reseaux actifs pour les applications adaptatives, et nous decrivons notre modele base sur des agents pour echanger des ressources dans un noeud actif. Nous avons applique le modele a une application de mixage audio. Nos resultats de simulations indiquent que le modele permet a l'application de faire un usage efficace des ressources, et de partager les ressources selon les preferences des utilisateurs.

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