Validação da Estratégia de Adaptação Dinâmica de QoS do Projeto ServiMídia

Luiz F. RustLuci PirmezRoberta GomesRenata CorreaReinaldo Correia

Distributed multimedia systems are applicable in various domains such as Distance Learning. Since multimedia documents may comprise continuous medias, the presentation of those documents may require vast system resources due to huge amount of data and to their QoS retrains. The availability of resources in a distributed environment at presentation time is variable and potentially unpredictable. Hence, it can happen that there are not sufficient resources to render a multimedia document according to its specification, resulting in an arbitrary decrease of presentation's quality. To handle resource scarcity, multimedia documents can be made adaptable to different resource availability. This article presents the results and assessment in terms of latency introduced by an adaptation strategy and a semantic verification tool for adaptive multimedia document (SCL). The adaptation strategy and the mechanisms used in the tool implementation had been conceived inside the ServiMidiaproject [1].

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