The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2026
Filed:
Dec. 23, 2021
Nec Corporation, Tokyo, JP;
Morihiko Ota, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
In an optical communication network including a plurality of communication apparatuses being connected by a transmission path transmitting WDM signal light in which a plurality of optical signals are performed wavelength division multiplexing, a network management apparatus includes an addition control unit that controls a first communication apparatus, when the first communication apparatus adds the optical signal to the WDM signal light, in such a way as to add, to be adjacent to each other, a plurality of the optical signals to be dropped by a second communication apparatus to a wavelength band being sandwiched between guard bands, and a drop control unit that controls the second communication apparatus, when the second communication apparatus drops the optical signal from the WDM signal light.