System and Method for Wavelength Conversion and Switching

摘要

A network component comprising at least one processor configured to implement a method comprising collecting wavelength availability information associated with a wavelength switched optical network (WSON), receiving a path computation request to transport a signal through the WSON, calculating at least one route through the WSON for the signal, and assigning at least one wavelength for the signal to use along the route. Also disclosed is a network comprising a first path computation element (PCE) configured to compute at least one route for a signal between a source and a destination, and a second PCE in communication with the first PCE, wherein the second PCE is configured to receive the route from the first PCE and assign at least one wavelength to the route.

主权项

1. A path computation element (PCE) comprising:
a receiver configured to:
receive routing and wavelength assignment (RWA) information from a plurality of network elements (NEs) in a wavelength switched optical network (WSON), the RWA information comprising a plurality of connectivity matrices, each connectivity matrix describing an ingress port to egress port connectivity of an associated NE; andreceive a path computation request from a path computation client (PCC); a processor coupled to the receiver and configured to compute a lightpath through the WSON via the NEs based on the connectivity matrices; and a transmitter coupled to the processor and configured to transmit a path computation reply comprising the computed lightpath to the PCC.