Admission control algorithms based on self-similar traffic modeling for IP networks

Future generation networks are expected to furnish differentiated multimedia services respecting the constraints of quality of service (QoS) requirements. To accomplish this task, a widely adopted approach relies on Admission Control (AC) strategies, i.e., to keep the number of active communications under a certain threshold in order to optimize the resources allocation. As a consequence, AC protocols effectiveness strictly depends upon the accuracy of the future user needs estimation in terms of bandwidth or, equivalently, of operative load conditions. Our proposal is based on the Self Similar (SS) traffic modelling; in paxticular, as the backbones are likely to be IPvx based, we refer to the class of the second order Asymptotically SS (ASS) processes. Therefore, we derive an equivalent bandwidth evaluation criterion and apply it to a DiffServ-based scenario, highlighting a network capacity increasing together with an outage probability lowering.