US 11,777,634 B2
Bundling capacity changes in channel holder based optical links
Choudhury A. Al Sayeed, Stittsville (CA); David C. Bownass, Ottawa (CA); and Yanping Xu, Ottawa (CA)
Assigned to Ciena Corporation, Hanover, MD (US)
Appl. No. 17/601,950
Filed by Ciena Corporation, Hanover, MD (US)
PCT Filed Apr. 8, 2020, PCT No. PCT/US2020/027124
§ 371(c)(1), (2) Date Oct. 7, 2021,
PCT Pub. No. WO2020/210269, PCT Pub. Date Oct. 15, 2020.
Application 17/601,950 is a continuation of application No. 16/378,830, filed on Apr. 9, 2019, granted, now 10,680,737, issued on Jun. 9, 2020.
Prior Publication US 2022/0190949 A1, Jun. 16, 2022
Int. Cl. H04J 14/02 (2006.01)
CPC H04J 14/0212 (2013.01) [H04J 14/0213 (2013.01); H04J 14/0227 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An Optical Add/Drop Multiplexer (OADM) node comprising
a Wavelength Selective Switch (WSS) connected to the optical section; and
a controller communicatively coupled to the WSS and configured to
receive a request for a capacity change for a plurality of channels on the optical section,
determine a grouping of the plurality of channels in N steps, N is an integer >1, based on an impact to existing traffic-carrying channels, wherein the grouping assigns each of the plurality of channels to a step of the N, steps, and
cause the N steps for the capacity change which includes switching between traffic-carrying channels and channel holders.
 
6. A method implemented in an Optical Add/Drop Multiplexer (OADM) node comprising:
receiving a request for a capacity change for a plurality of channels on an optical section,
determining a grouping of the plurality of channels in N steps, N is an integer >1, based on an impact to existing traffic-carrying channels, wherein the grouping assigns each of the plurality of channels to a step of the N steps; and
causing the N steps for the capacity change which includes switching between traffic-carrying channels and channel holders.
 
11. A non-transitory computer-readable medium comprising instructions that, when executed, cause a controller associated with an Optical Add/Drop Multiplexer (OADM) node to perform steps of:
receiving a request for a capacity change for a plurality of channels on an optical section,
determining a grouping of the plurality of channels in N steps, N is an integer >1, based on an impact to existing traffic-carrying channels, wherein the grouping assigns each of the plurality of channels to a step of the N steps; and
causing the N steps for the capacity change which includes switching between traffic-carrying channels and channel holders.