A Modular Architecture for Measurement Based Admission Control

In the Laboratory for Communications and Telematics (LCT) of the Centre of Informatics and Systems of the University of Coimbra (CISUC), research is ongoing towards a Measurement Based Admission Control (MBAC) framework for DiffServ [1] based networks. Till now, many research in this area was and still is undertaken with an encyclopedic literature about this subject as one achievement. While some articles present complete MBAC algorithms, others focus on specific details. In fact, we show that the MBAC problem is a compound of different subproblems and in this paper we present a modular architecture for an MBAC algorithm. In our proposal, we dismantle the MBAC problem in four different modules, which in turn leads to seamless integration in DiffServ edge router design. Further, and in contrast to current approaches, we argue that the logical separation between the operation of an MBAC algorithm and a queueing discipline is disadvantageous and propose a cooperative framework where the parameters of the queueing discipline are adjusted according to resource consumption of ongoing and arriving resource consumers, both determined by the MBAC algorithm.