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:
Feb. 10, 2026
Filed:
Apr. 28, 2021
Applicant:
Ntt, Inc., Tokyo, JP;
Inventors:
Hanami Yokoi, Tokyo, JP;
Kojun Koshiji, Tokyo, JP;
Yasuharu Kaneko, Tokyo, JP;
Tatsuya Matsukawa, Tokyo, JP;
Mika Ishizuka, Tokyo, JP;
Takafumi Hamano, Tokyo, JP;
Assignee:
NTT, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 14/02 (2006.01);
U.S. Cl.
CPC ...
H04J 14/02 (2013.01);
Abstract
A wavelength defragmentation apparatus for executing wavelength reallocation for a path in an optical transmission network, the wavelength defragmentation apparatus comprising: a storage unit that stores a path information database (DB) and a wavelength allocation management DB; and a wavelength defragmentation functional unit that refers to an attribute of a path from the path information DB and performs wavelength reallocation of a path having the attribute by an operation corresponding to the attribute.