Dynamic resource migration for multiparty real-time communication

With long-lived multi-party connections, resource allocation subsystems in distributed real-time systems or communication networks must be aware of dynamically changing network load in order to reduce call-blocking probabilities. We describe a distributed mechanism to dynamically reallocate ("migrate") resources without adversely affecting the performance that established connections receive. In addition to allowing systems to dynamically adapt to load, this mechanism allows for distributed relaxation of resources (i.e. the adjustment of overallocation of resources due to conservative assumptions at connection establishment time) for multicast connections. We describe how dynamic resource migration is incorporated in the Tenet Scheme 2 protocols for multiparty real-time communication.