A New Approach to Manage QoS in Distributed Multimedia Systems

Bechir Alaya (1) , Claude Duvallet (1, 2) , Bruno Sadeg (1, 2)

1 LITIS - Laboratoire d'Informatique, de Traitement de l'Information et des Systèmes
2 RI2C - LITIS - Equipe Réseaux d'interactions et Intelligence Collective

Dealing with network congestion is a criterion used to enhance quality of service (QoS) in distributed multimedia systems. The existing solutions for the problem of network congestion ignore scalability considerations because they maintain a separate classification for each video stream. In this paper, we propose a new method allowing to control QoS provided to clients according to the network congestion, by discarding some frames when needed. The technique proposed, called (m,k)-frame, is scalable with little degradation in application performances. (m,k)-frame method is issued from the notion of (m,k)-firm real-time constraints which means that among k invocations of a task, m invocations must meet their deadline. Our simulation studies show the usefulness of (m,k)-frame method to adapt the QoS to the real conditions in a multimedia application, according to the current system load. Notably, the system must adjust the QoS provided to active clients when their number varies, i.e. dynamic arrival of clients.

Domaines: Multimédia [cs.MM]

Bechir Alaya, Claude Duvallet, Bruno Sadeg. A New Approach to Manage QoS in Distributed Multimedia Systems. International Journal of Computer Science and Information Security, 2009, 2, pp.1-10. ⟨hal-00442311⟩