Title:
MONITORING DEVICE, MONITORING METHOD, AND MONITORING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/162185
Kind Code:
A1
Abstract:
A data acquisition unit (11) of a monitoring device (1) acquires, from an optical channel monitor (106) for measuring the power value of an optical signal outputted by each of nodes (110 to 140), a power value (IV1) in a range (Ra) including all wavelengths of a target channel (TCh), and acquires power values (IV2, IV3) in ranges (Rb, Rc) each including some of the wavelengths of the target channel (Tch). A determination unit (12) determines an abnormality in each node (110 to 140) by comparing the power values (IV1, IV2, IV3) respectively with threshold values (TH1, TH2, TH3) based on the power value in a stationary state of the node (110 to 140).
Inventors:
KUBO TAKASHI (JP)
DATE HIROKI (JP)
WATANABE KOHEI (JP)
AOYAGI KENICHI (JP)
SHIMAZAKI DAISAKU (JP)
MAEDA HIDEKI (JP)
DATE HIROKI (JP)
WATANABE KOHEI (JP)
AOYAGI KENICHI (JP)
SHIMAZAKI DAISAKU (JP)
MAEDA HIDEKI (JP)
Application Number:
PCT/JP2022/008084
Publication Date:
August 31, 2023
Filing Date:
February 25, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B10/079; H04J14/02
Domestic Patent References:
| WO2022009293A1 | 2022-01-13 |
Foreign References:
| JP2015019289A | 2015-01-29 | |||
| JP2015164264A | 2015-09-10 | |||
| JP2018133720A | 2018-08-23 |
Other References:
SHARIATI BEHNAM; RUIZ MARC; COMELLAS JAUME; VELASCO LUIS: "Learning From the Optical Spectrum: Failure Detection and Identification", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE, USA, vol. 37, no. 2, 15 January 2019 (2019-01-15), USA, pages 433 - 440, XP011710898, ISSN: 0733-8724, DOI: 10.1109/JLT.2018.2859199
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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