An admission control model through outband signalling management

A dynamic window model is developed which provides admission control for circuit switched networks through the signaling network. This model incorporates distributed processing while achieving desired global congestion control effects. It reflects the interaction between the circuit switched path in the telephone network and the packet switched path in the signaling network. The model is solved by applying the concept of parametric analysis to study the whole circuit switching subnetwork as a composite server. The variant service rate is derived for the composite server of the circuit switch trunk in the context of a closed chain where the arrival of call services is finite. To avoid overflow and combinatorial complex problems, the computation is reduced to the Erlang recursive form. Mean value analysis formulas are derived for the model. Examples are given to demonstrate the validation of the analysis