Adaptive connection admission control for differentiated services access networks

Previously, we proposed some modifications for the bandwidth broker framework. With our modifications, it is possible to use measurement-based admission control (MBAC) in addition to the more traditional parameter-based admission control (PBAC). Moreover, we have presented a new flexible admission control scheme that has proven to be very efficient in terms of bottleneck link utilization. Two problems, however, have arisen: the use of scheduling weights in admission control; bursty connection arrivals. We propose that the former can be dealt with by the use of adaptive scheduling weights, while the latter can be fought with adaptive reservation limits. The proposed new algorithms are validated through simulations and their performance is compared against the non-adaptive basic scheme.