Title:
OPTICAL TRANSMISSION SYSTEM AND FAILURE SITE IDENTIFICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/162187
Kind Code:
A1
Abstract:
An optical transmission system (1) includes nodes (31, 32, 35, and 51 to 55) that are connected to each other by an optical transmission path (2), monitoring units (7a, 7b, 7c, and 71 to 75) that sample, in time sequence, signal information in at least one signal sampling point between a transmission/reception end of each node and equipment within the node, and an OpS (8) that performs control thereof. The OpS (8) extracts a component (50a) estimated to include a failure site by causing the monitoring units (7a, 7b, and 7c) to observe signal information of reception ends of components, and identifies the failure site by causing the monitoring units (72 to 75) to observe temporal change of the signal information at the signal sampling point to detect the abnormality at the component (50a).
Inventors:
DATE HIROKI (JP)
KUBO TAKASHI (JP)
WATANABE KOHEI (JP)
AOYAGI KENICHI (JP)
SHIMAZAKI DAISAKU (JP)
MAEDA HIDEKI (JP)
KUBO TAKASHI (JP)
WATANABE KOHEI (JP)
AOYAGI KENICHI (JP)
SHIMAZAKI DAISAKU (JP)
MAEDA HIDEKI (JP)
Application Number:
PCT/JP2022/008096
Publication Date:
August 31, 2023
Filing Date:
February 25, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B10/075
Foreign References:
| JP2018007058A | 2018-01-11 | |||
| JP2018064160A | 2018-04-19 | |||
| JP2012213057A | 2012-11-01 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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