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Title:
PATH SWITCHING APPARATUS AND PATH SWITCHING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/054614
Kind Code:
A1
Abstract:
In order to provide a path switching apparatus capable of continuing communication by operation corresponding to the state of occurrence of a failure, this path switching apparatus is configured to be provided with a first switching device 1, a second switching device 2, a detection circuit 3, and a control circuit 4. The first switching device 1 switches, using a first switch, connection between a first submarine cable and either a predetermined optical path or a third submarine cable connected to an optical branching/insertion device. The second switching device 2 switches, using a second switch, connection between a second submarine cable and either the predetermined optical path connected to the first switch or the third submarine cable connected to the optical branching/insertion device. The detection circuit 3 detects the state of an optical signal inputted via the third submarine cable. The control circuit 4 controls switching of the switches on the basis of electric power supplied through the first submarine cable or the second submarine cable. The control circuit 4 controls the switches on the basis of the state of detection of an optical signal.

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Inventors:
TAKAHASHI MASAKI (JP)
Application Number:
PCT/JP2019/035191
Publication Date:
March 19, 2020
Filing Date:
September 06, 2019
Export Citation:
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Assignee:
NEC CORP (JP)
International Classes:
H04B10/03; H04B3/44; H04B10/291; H04J14/02
Domestic Patent References:
WO2016147610A12016-09-22
WO2016092806A12016-06-16
WO2017141855A12017-08-24
WO2012144585A12012-10-26
WO2016181642A12016-11-17
Foreign References:
JP2017508331A2017-03-23
JP2018168969A2018-11-01
Other References:
See also references of EP 3852285A4
Attorney, Agent or Firm:
SHIMOSAKA Naoki (JP)
Download PDF:
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