Admission control for distribution of smoothed video using patching algorithms

Abstract

The resource sharing techniques in Multimedia on demand systems allow the simultaneous service of a large number of requests with considerable savings in terms of network bandwidth and server resources. In this paper, we report the results of a study that analyzes several key aspects of video distribution systems, in the hypothesis of exploiting patching techniques. Synthetically, such a technique consists in serving a client request by an existing stream for that video object (if there is any) which is buffered in the client equipment and simultaneously a new stream is requested to the server for the frames already transmitted. For such systems, a performance analysis has been carried out, exploiting analytical and simulation models. The results show the main system performance (efficiency, aggregate bandwidth, etc.) allowing to decide about the acceptance of a new service request based on QoS criteria. © Springer-Verlag Berlin Heidelberg 2001.