US 12,289,568 B2
Optical network management apparatus and method of allocating optical frequency band
Hitoshi Takeshita, Tokyo (JP); Shinsuke Fujisawa, Tokyo (JP); Tomoyuki Hino, Tokyo (JP); and Akio Tajima, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC CORPORATION, Tokyo (JP)
Filed on Jul. 7, 2023, as Appl. No. 18/219,136.
Application 18/219,136 is a continuation of application No. 17/385,286, filed on Jul. 26, 2021, granted, now 11,736,839.
Application 17/385,286 is a continuation of application No. 16/924,721, filed on Jul. 9, 2020, granted, now 11,109,123.
Application 16/924,721 is a continuation of application No. 16/444,803, filed on Jun. 18, 2019, granted, now 10,750,259, issued on Aug. 18, 2020.
Application 16/444,803 is a continuation of application No. 16/078,103, granted, now 10,375,460, issued on Aug. 6, 2019, previously published as PCT/JP2017/006060, filed on Feb. 20, 2017.
Claims priority of application No. 2016-031563 (JP), filed on Feb. 23, 2016.
Prior Publication US 2023/0353913 A1, Nov. 2, 2023
Int. Cl. H04Q 11/00 (2006.01); H04B 10/27 (2013.01); H04J 14/02 (2006.01)
CPC H04Q 11/0062 (2013.01) [H04B 10/27 (2013.01); H04J 14/0256 (2013.01); H04J 14/0272 (2013.01); H04Q 2011/0073 (2013.01); H04Q 2011/0086 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A ROADM (reconfigurable optical add/drop multiplexer) apparatus comprising:
an optical wavelength selector configured to perform at least one of:
adding an optical path from its own optical node;
cutting through an optical path of its own optical node; and
dropping an optical path at its own optical node; and
a controller,
wherein the optical wavelength selector is configured to operate an optical wavelength selection process with respect to each of optical paths, based on wavelength selection information related to the optical wavelength selection process, and
wherein the controller is configured to set, for the optical wavelength selector, a passband including a guard band set with respect to each of the optical paths, based on the wavelength selection information.