A Diffserv measurement-based admission control utilizing effective envelopes and service curves

Among the trends in quality of service (QoS) provisioning is the differentiated services (Diffserv) architecture. The successful deployment of Diffserv requires an effective connection admission control (CAC), which needs to be scalable and relatively simple to implement. An efficient CAC provides a high degree of network resource sharing among multiple traffic classes while satisfying their quality-of-service requirements. We present a novel effective measurement-based CAC based on the so-called global effective envelopes of an arriving traffic aggregate and the service curves of the corresponding departing traffic aggregate. This approach provides the statistical service guarantees to a variety of service classes within a Diffserv domain. We show that the novel CAC algorithm does not depend on the underlying network topology and is scalable. To evaluate this approach. We perform a set of simulations on a number of bursty video traffic sources