Investigation of dynamic resource allocation based on transmission performance analysis and service classification in wavelength-division-multiplexing optical networks

摘要

In wavelength-routed optical networks, the transmission performance of the optical lightpaths available may not always satisfy the service requirements due to the quality degradation of signals induced by crosstalk, polarized mode dispersion (PMD), nonlinear effects, etc. Based on the integrated consideration of signal transmission impairments and service classification, a novel model on dynamic resource allocation in optical networks is presented in this paper. The model classifies the service requirements with different priorities and provides differentiated QoS in the optical domain. By adopting a multi-path RWA algorithm, called DMC-OVWP, the lightpath candidates are found out for each connection request of the services. Afterwards, by analyzing the transmission qualities of the lightpath candidates, an appropriate lightpath matched the request priority are picked out and set up. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 16]