Dynamic connection management for call-level QOS guarantee in integrated communication networks

Conventional allocation of network resources for connection management is by and large static. For each performance parameter that is negotiated during a call setup, its agreed value must be maintained throughout the duration of the call. Due to a dynamic networking environment, the result of quality of service (QOS) negotiation during call establishment may not remain ideal throughout the duration of a call. The authors propose a method for managing connections, in a connection-oriented integrated communication network, to maintain acceptable QOS for the entire duration of each connection, to make QOS improvements whenever possible, to recover from connection failures and call preemption, as well as to partially retrieve allocated resources to relieve network overload