Admission control for multi-layer management of high-speed packet-switched networks under observation noise

A study is made of admission control as a congestion avoidance mechanism in the management of high-speed packet-switched networks under imperfect information. A multi-layer model which can be used for the analysis of ISDN-and B-ISDN-type networks is presented. In this model, traffic requirements at the lower layers result in constraints on the admission policies at the call layer. Using such a model, an examination is made of the effects of noisy estimates on the performance of networks managed via fixed threshold call admission policies. The standard deviation of the collected information concerning the network status serves as a key parameter in representing the complexity, coverage, extensiveness, and cost of the implemented network management and information collecting procedure. For a single-domain network, the effects of Gaussian noise on call blocking, call throughput, packet throughput, and the probability of excess calls are examined in detail. The throughput capacity trajectory is described for fixed packet blocking, packet delay, and probability of excess call constraints