A methodology for provisioning and differentiation of optical QoS in FWN impaired transparent optical networks / Uma abordagem para aprovisionamento e diferenciação de QoS optico na presença de FWM em redes opticas transparentes

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

This Thesis proposes methodologies for differentiated optical QoS in a multi-client scenario, in which client networks (e.g. IP/MPLS and SDH) dynamically request lightpaths from a transparent optical network in which Four-Wave Mixing (FWM) imposes crosstalk among lightpaths. In order to meet Optical Service Level Agreement (OSLA), it is proposed an integrated approach towards Connection Admission Control (CAC) and Routing and Wavelength Assignment (RWA) algorithms. The strategy used in this Thesis includes a progressive approach from complex to simple algorithms to properly assess the simplified control, of FWM through new metrics such as Probability of Threshold Violation (TVP). In addition, it is shown that very simple CACRWA can be used to provide Differentiated Services. Results highlight the trade-off among three parameters: QoS levels required by client networks, total traffic transported though optica! network, and complexity of QoS algorithms. Therefore, the main contribution lies in low complexity CAC/RWA algorithms to tackle a very complex physical impairment, even encompassing scenarios with differentiated requirements for OSLA

ASSUNTO(S)

telecomunicações - redes de computação optical communications comunicações oticas otica não-linear fibras oticas nonlinear optics optical fibers computer network telecommunication

ACESSO AO ARTIGO

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