Dynamic resource control for continuous media traffic over ATM networks

Traffic control for continuous media traffic is an inherently difficult problem due to the time-sensitive nature of the traffic and its unpredictable burstiness. We present a scheme which controls traffic by dynamically allocating/de-allocating resources among competing virtual channels (VCs) based upon their real-time requirements. This scheme incorporates a form of rate-control, real-time burst-level scheduling and link-link flow control. We show analytically potential performance improvements of our rate-control scheme and present a scheme for buffer dimensioning. We also present simulation results of our schemes and discuss the tradeoffs inherent in maintaining high network utilization and statistically guaranteeing many users´ quality of service