Modelling the performance of distributed admission control for adaptive applications

We outline a methodology for the performance analysis of distributed admission control for adaptive applications, or long-lived flows, where each flow can transmit at one of a discrete set of rates, and can switch between these rates. Specific examples are certain voice over IP or conferencing applications. In the Internet, UDP based protocols such as RTP have the potential to allow sources to alter their sending rates using periodic feedback, where again the rate can take values from a limited set.