Network support for multimedia communications using distributed media scaling
Résumé
This paper focuses on the transmission of continuous multimedia streams in packet switched networks, through the use of distributed media scaling techniques. These techniques make it possible for any receiver of a multicast stream to get best possible quality, while avoiding any waste of network resources. Enabling distributed media scaling requires to design network nodes with media scaling capabilities, as well as to design proper control mechanisms that will ensure optimal filter tuning in any node and at any time. A multicast transport protocol allowing network-level media scaling through a special memory management is proposed, and a distributed algorithm which enables optimal tuning of the network node filters is presented.