Abstract
This paper presents a study of the newly proposed End-to-end Measurement Based Admission Control scheme with Loss threshold policy (EMBAC-L). The proposed scheme allows automatic adjustment of the admission control scheme parameters using a feedback measurement of the network’s active loss rate. If the loss rate is less than the predetermined threshold, then the call is accepted, otherwise the call is rejected, with probability P which is a function of the measured network loss. The scheme’s call rejection probability is analyzed with various distribution functions in order to set the admission threshold and scheme parameters to the appropriate operational value. Simulation is used to evaluate the scheme’s performance and to demonstrate its effectiveness. Our study shows that the proposed admission control mechanisms enhance the EMBAC mechanism’s performance, and dynamically control the VoIP packet loss rate under various network operational conditions.
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