A New Approach to Manage QoS in Distributed Multimedia Systems

Details A New Approach to Manage QoS in Distributed Multimedia Systems A New Approach to Manage QoS in Distributed Multimedia Systems

2009-06-26

arxiv.org/abs/0906.4936v1

IJCSIS June 2009 Issue, Vol. 2, No. 1

Computer Science

Multimedia

10 pages, International Journal of Computer Science and Information Security (IJCSIS)

Scientific paper

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 realtime 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 clients1 when their number varies, i.e. dynamic arrival of clients.

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