Flexible virtual optical network provisioning using distance-adaptive modulation

摘要

Flexible VON provisioning may include calculating a candidate mapping pattern to satisfy a virtual optical network (VON) demand based on virtual-to-physical node mapping choices. A distance-adaptive routing and spectral slot assignment evaluation of the candidate mapping pattern may be performed. When the VON demand is satisfied by the candidate mapping pattern, the candidate mapping pattern may be added to a valid mapping patterns list. A final mapping pattern may be selected from the valid mapping patterns list, the final mapping pattern having one of a lowest slot layer and a smallest overall slot usage on the valid mapping patterns list. Then, network resources may be reserved based on the final mapping pattern selected to service the VON demand.

主权项

1. A method for network provisioning, comprising:
responsive to receiving a request for a virtual optical network (VON), calculating a first mapping pattern, the first mapping pattern includes a mapping of at least two virtual nodes to at least two physical nodes in an optical network; evaluating the first mapping pattern for compliance with the request, wherein distance-adaptive routing and spectral slot assignment is performed on the first mapping pattern; and when the first mapping pattern complies with the request:
designating the first mapping pattern as a first valid mapping pattern;selecting, from valid mapping patterns for the request including the first valid mapping pattern, a final mapping pattern, wherein the final mapping pattern has at least one of a lowest spectral slot layer and a smallest spectral slot usage among the valid mapping patterns;allocating physical network resources, including physical nodes and lightpaths, based on the final mapping pattern; andresponding to the request with an indication of the final mapping pattern.