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1. (WO2018055042) METHOD, COMPUTER PROGRAM AND ROUTING ENGINE FOR PROACTIVE PERFORMANCE-BASED FREQUENCY MANAGEMENT

Pub. No.:    WO/2018/055042    International Application No.:    PCT/EP2017/073918
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Fri Sep 22 01:59:59 CEST 2017
IPC: H04J 14/02
Applicants: XIEON NETWORKS S.À R.L.
Inventors: PEDRO, Joao
Title: METHOD, COMPUTER PROGRAM AND ROUTING ENGINE FOR PROACTIVE PERFORMANCE-BASED FREQUENCY MANAGEMENT
Abstract:
Disclosed herein is a method of assigning a wavelength to a given light path in a wavelength switched optical network, as well as a corresponding routing engine and computer program. The method comprises the following step. For each of a plurality of possible wavelengths for said light path, retrieving information from an optical performance database (30) allowing to assess whether the given wavelength meets a predetermined feasibility criterion with regard to said given light path; if the given wavelength is found to meet the predetermined feasibility criterion, determining a set of extended feasible light paths, each of which fully including the given light path, but containing one or more additional nodes; and calculating a first score based on said determined set of extended feasible light paths, wherein said method further comprises a step of choosing, based on said first score, a wavelength that has a first score indicating a low suitability for providing useful extended feasible light paths for future use.