Patent ID: 9485553
Filing Date: 2016-11-01
CPC Classification: H04J,H04L,H04Q

Claim Text:
1. A method for servicing a request for path computation at a path computation element in a wavelength switched optical network, the method comprising: receiving a request from a path computation client for computation of a path between end nodes, the request identifying the end nodes and a transmission parameter that is supported by the end nodes, the transmission parameter including a bit rate and a plurality of modulation formats; determining a plurality of values of the transmission parameter supported by the end nodes; computing one or more paths between the end nodes for the transmission parameter based on meeting a bit error rate (BER) below a set threshold, wherein the computing further comprises selecting one of the values of the transmission parameter that provides the path requiring a minimum number of frequency slots from the one or more paths computed; and sending a reply to the path computation client, wherein the reply identifies the path computed between the end nodes and the reply identifies the selected value of the transmission parameter for the computed path.