The purpose of this paper is to examine the issues related to the efficiency and adaptability of the admission control module of a Bandwidth Broker. The proposed architecture is able to handle situations such as the resubmission of previously rejected requests and offer a fair treatment for requests in an environment where a subset of these requests do not specify their ending time. We describe the proposed mechanisms for such cases which aim at solving the additional problems of fairly

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... zing resubmitted requests and efficiently handle requests which do not specify ending times. We also provide experimental evaluations of the proposed algorithms and the conclusions they lead us to.