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A Virtual Topology Management Policy in Multi-Stage Reconfigurable Optical Networks  

Ji-Eun Keum (한국정보통신대학교 통신공학부)
Lin Zhang (한국정보통신대학교 통신공학부)
Chan-Hyun Youn (한국정보통신대학교 통신공학부)
Abstract
In this paper. we develop an analytical model to evaluate the virtual topology reconfiguration phase of optical Internet networks. To counter the continual approximation problem brought by traditional heuristic approach, we take the traffic prediction into consideration and propose a new heuristic reconfiguration algorithm called Prediction based Multi-stage Reconfiguration approach. We then use this analytical model to study the different configuration operation policies in response to the changing traffic patterns in the higher layer and the congestion level on the virtual topology. This algorithm persists to decide the optimal instant of reconfiguration easily based on the network state. Simulation results show that our virtual topology management Policy significantly outperforms the conventional one, while the required physical resources are limited.
Keywords
WDM networks; Reconfiguration Policy; Network Management; Performance Analysis;
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