Fujitsu Corporation

Arvind Kumar

Niranjan Mahabaleshwar

Mritunjay Pandey

Shyam Ramachandran

Systems and methods for self-characterization of a software-defined optical network are disclosed. A test transponder may generate and transmit test traffic using various combinations of transmission parameters to discern physical characteristic of a route between two network elements. The test transponder may compute optical characteristics of the route based on the physical characteristics and transmission parameters. An SDN controller may maintain a characterization database storing test results. The test results may be fed to a machine learning engine, which outputs predictions or recommendations regarding utilization of bandwidth and other resources. The optical network may be adapted to handle requested, observed, or predicted changes in on-demand traffic or traffic surges. The test results may be used to defragment the optical spectrum with minimal or no impact on existing traffic to make space in a flexible grid for newly launched channels or channels being moved to different spectrum locations.

Apparatus and method for self-learning and predictive DWDM network

A disclosed method for optimizing channel selection in a flexible grid of an optical network may be used to select a minimum number of channels to allocate to traffic between pairs of optical transponders at a particular distance based on the modulation format and the FEC mechanism used. The method may include selecting an initial number of channels to allocate to the traffic, tuning the modulation format for the traffic while potentially reducing the number of channels, and tuning the FEC mechanism for the traffic while potentially further reducing the number of channels. The transponders may support multiple modulation formats of different orders and an adaptive FEC mechanism for which the maximum number of FEC overhead bytes is equal to the number of bytes in the transmitted data packets. The method may be implemented by an SDN controller and may be dependent on a feedback mechanism between the optical transponders.

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Haryana, India

Arvind Kumar