Patent ID: 8463122
Filing Date: 2013-06-11
Classification: H04Q

Abstract:
1. A method for performing a path based quality check for a specified bit rate in a wavelength division multiplexing optical network comprising: selecting from a database, which stores a representation of available paths from an access node of the optical network to other access nodes of the optical network, one of the available paths as a currently selected path, wherein said database also stores a representation of wavelengths available on each of the available paths, and wherein an available path is a series of two or more nodes each connected by an optical link on which a set of wavelengths is available for establishing a lightpath; determining cumulative noise for the currently selected path; determining a maximum allowable noise for the specified bit rate; determining cumulative chromatic dispersion of the currently selected path; determining a maximum allowable chromatic dispersion for the specified bit rate; determining whether the currently selected path passes the path based quality check based on whether the cumulative noise for the currently selected path is less than the maximum allowable noise at the specific bit rate and whether the chromatic dispersion is less than the maximum allowable chromatic dispersion at the specified bit rate.