Optical transmission system and wavelength allocation method

Patent metadata

Field	Value
Publication number	US-11201687-B2
Application number	US-201917268831-A
Country	US
Kind code	B2
Filing date	Aug 8, 2019
Priority date	Aug 22, 2018
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

[Problem] In a disaggregated optical transmission system formed by connecting bases including transmission apparatuses having specifications of different vendors through an optical fiber, wavelength information is easily set in the transmission apparatuses at both bases of the optical fiber such that the required wavelength is assigned to the optical fiber.
[Solution] The optical transmission system 30 includes a facility DB 34 that stores at least information on the NW configuration in which a predetermined optical signal wavelength is assigned to the optical fiber 17 , a wavelength assignment unit 32 f that, if the facility DB 34 stores no information on the same NW configuration as a NW configuration that the wavelength assignment request to the optical fiber 17 between bases has, associates a management number with a wavelength commonly available for different vendors, based on vendor information in which management numbers and wavelengths of vendors are associated, and further if this wavelength is assignable to the optical fiber 17 , performs a wavelength assignment instruction by using the management number, and a wavelength setting unit 33 that performs wavelength assignment setting in the transmission apparatuses at both bases of the optical fiber 17 in response to the wavelength assignment instruction.

First claim

The invention claimed is:

1. A disaggregated optical transmission system formed by connecting bases including transmission apparatuses having specifications of different vendors through an optical fiber, the system comprising:
a Data Base (DB) configured to store at least information on a network (NW) configuration in which a predetermined optical signal wavelength is assigned to the optical fiber;
a wavelength assignment unit, including one or more processors, configured to, at a time of a wavelength assignment request to the optical fiber between the bases, if the DB stores no information on the same NW configuration as a NW configuration that the wavelength assignment request has, then, based on management numbers of the vendors, wavelengths available for the vendors, and vendor information associated with the wavelengths, associate one of the management numbers with a wavelength commonly available for different vendors, and further if the wavelength associated with the one of the management numbers is assignable to the optical fiber, perform a wavelength assignment instruction by using the one of the management numbers; and
a setting unit, including one or more processors, configured to set wavelength information in the transmission apparatuses at both bases of the optical fiber such that the wavelength according to the wavelength assignment instruction is to be assigned to the optical fiber.

2. The disaggregated optical transmission system according to claim 1 ,
wherein, when the wavelength associated with the management number is not to be assignable to the optical fiber, the wavelength assignment unit is configured to repeat determination as to whether a wavelength associated with another one of the management numbers is assignable to the optical fiber, and perform the wavelength assignment instruction by using one of the management numbers that is associated with the wavelength determined to be assignable.

3. A wavelength assignment method by a disaggregated optical transmission system formed by connecting bases including transmission apparatuses having specifications of different vendors through an optical fiber,
the disaggregated optical transmission system including a DB configured to store at least information on a NW configuration in which a predetermined optical signal wavelength is assigned to the optical fiber, a wavelength assignment unit including one or more processors, and a setting unit including one or more processors,
the wavelength assignment method comprising:
a step by the wavelength assignment unit of, at a time of a wavelength assignment request to the optical fiber between the bases, if the DB stores no information on the same NW configuration as a NW configuration that the wavelength assignment request has, then based on the management numbers of the vendors, wavelengths available for the vendors, and vendor information associated with the wavelengths, associating one of the management numbers with a wavelength commonly available for different vendors, and further if the wavelength associated with the one of the management numbers is assignable to the optical fiber, performing a wavelength assignment instruction by using the one of the management numbers; and
a step by the setting unit of setting wavelength information in the transmission apparatuses at both bases of the optical fiber such that the wavelength according to the wavelength assignment instruction is to be assigned to the optical fiber.

4. The wavelength assignment method according to claim 3 , further comprising:
when the wavelength associated with the management number is not to be assignable to the optical fiber, repeating, by the wavelength assignment unit, determination as to whether a wavelength associated with another one of the management numbers is assignable to the optical fiber, and performing, by the wavelength assignment instruction by using one of the management numbers that is associated with the wavelength determined to be assignable.

Assignees

• Nippon Telegraph & Telephone

Inventors

• Seki Toshihiko
• Okino Osamu
• Oyanagi Hiroyuki
• Nakamura Mizuto

Classifications

• H04B10/27

  Arrangements for networking · CPC title

• G06F16/22

  Indexing; Data structures therefor; Storage structures · CPC title

• H04B10/25

  Arrangements specific to fibre transmission · CPC title

• H04J14/0257 Primary

  Wavelength assignment algorithms · CPC title

• H04J14/0241 Primary

  Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths · CPC title