A QoS-Oriented Scheme for a Real Time Admission Control in OBS Networks

Optical burst switching (OBS) technology offers a promising solution for the next generation Internet backbone. However, call admission control (CAC) constitutes a critical issue in its services developments. Some studies have considered the CAC problem in OBS networks. Yet, all proposed schemes are limited to the use of mean values of some network parameters (MVA: Mean Values Approach), which may lead to false decisions in terms of traffic admission, and so the degradation of the network performances. In this paper, we propose a QoS-oriented scheme for a real time admission control in OBS networks. This may allow more accurate decision; thus, better QoS provision and more efficient resources utilization. We develop an analytic model for a mathematical formulation of the proposed scheme. We also propose a simulation that we conducted to validate the proposed scheme and evaluate its performances.