Proactive Cooperative Scheduling and Buuer Management for Multimedia Networks Proactive Cooperative Scheduling and Buuer Management for Multimedia Networks

Is it possible, and to what extent feasible, for link schedulers and buuer managers in multimedia networks with propagation delays to eeectively relieve congestion by means of feedback signalling? We show that a proactive, cooperative control algorithm for distributed resource scheduling and buuer management of multime-dia networks based on traac predictions of correlated input traac streams into network nodes obviates the problem of propagation delays. Nodes projecting to be under stress signal their neighboring upstream nodes for the latter to readjust their ow rates, while guaranteeing quality of service as negotiated at call set up. Detailed implementations of the adaptive, feedback control mechanisms of distributed asynchronous algorithms that project future overload conditions are presented. The design allows the underlying single node link scheduling and buuer management algorithm to be run in either a cooperative or non-cooperative mode of operation.