OPTICAL NODE DEVICE, OPTICAL NETWORK CONTROLLER, AND OPTICAL NETWORK CONTROL METHOD

摘要

In an optical network based on a dense wavelength division multiplexing system using a flexible frequency grid, it is difficult to improve the usage efficiency of an optical frequency band owing to the occurrence of fragmentation of the optical frequency band; therefore, an optical network controller according to an exemplary aspect of the present invention includes an optical frequency region setting means for setting a plurality of optical frequency regions in an optical frequency band used in an optical network based on a dense wavelength division multiplexing system using a flexible frequency grid; an optical path setting means for setting optical paths having a common attribute in at least one of the plurality of optical frequency regions; and an optical frequency region control means for changing an optical frequency width of the optical frequency region, and instructing the optical frequency region setting means to reconfigure, as the plurality of optical frequency regions, a plurality of optical frequency reconfigured regions each of which having the optical frequency width after having been changed.

主权项

1. An optical network controller, comprising:
an optical frequency region setting unit configured to set a plurality of optical frequency regions in an optical frequency band used in an optical network based on a dense wavelength division multiplexing system using a flexible frequency grid; an optical path setting unit configured to set optical paths having a common attribute in at least one of the plurality of optical frequency regions; and an optical frequency region control unit configured to change an optical frequency width of the optical frequency region, and instruct the optical frequency region setting unit to reconfigure, as the plurality of optical frequency regions, a plurality of optical frequency reconfigured regions each of which having the optical frequency width after having been changed.