Optical network system, optical transmission device, and failure occurrence section determination method

Patent metadata

Field	Value
Publication number	US-2016359554-A1
Application number	US-201615171452-A
Country	US
Kind code	A1
Filing date	Jun 2, 2016
Priority date	Jun 5, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

An optical network system includes: a plurality of optical transmission devices, each includes a transmitting unit configured to superimpose, on a main signal to be transmitted, a monitoring signal of a different wavelength from wavelengths of other optical transmission devices, the wavelength differing from wavelengths for other optical transmission devices in the optical network system, and an extraction unit configured to extract monitoring signals from main signals received from the other optical transmission devices, wherein a failure occurrence section where a communication failure occurs is determined, based on the monitoring signals extracted by the extraction unit, among transmission sections between the respective optical transmission devices.

First claim

What is claimed is:

1 . An optical network system comprising:
a plurality of optical transmission devices, each includes a transmitting unit configured to superimpose, on a main signal to be transmitted, a monitoring signal of a different wavelength from wavelengths of other optical transmission devices, the wavelength differing from wavelengths for other optical transmission devices in the optical network system, and an extraction unit configured to extract monitoring signals from main signals received from the other optical transmission devices, wherein a failure occurrence section where a communication failure occurs is determined, based on the monitoring signals extracted by the extraction unit, among transmission sections between the respective optical transmission devices.

2 . The optical network system according to claim 1 , further comprising:
a monitoring device configured to include a retaining unit configured to retain matrix data obtained by associating a presence or a non-presence of the monitoring signals with the failure occurrence section; and a determination unit configured to determine the failure occurrence section by referring to the matrix data based on the presence or the non-presence of the monitoring signals extracted by extraction units of the optical transmission devices.

3 . The optical network system according to claim 1 ,
wherein each of the optical transmission devices further includes a monitoring device configured to include a retaining unit configured to retain a matrix data obtained by associating a presence or a non-presence of the monitoring signals with the failure occurrence section, a first determination unit configured to determine a first failure occurrence section by referring to the matrix data based on the presence or the non-presence of the monitoring signals extracted by the extraction unit, and a second detection unit configured determine a second failure occurrence section, from the result of the determination of the first failure occurrence sections determined by the first determination units of the optical transmission devices.

4 . The optical network system according to claim 1 ,
wherein at least one of the plurality of optical transmission devices includes a state acquisition signal transmitting unit configured to transmit a state acquisition signal to a relay device included in the detected failure occurrence section to acquire a state of the relay device, and wherein whether the communication failure occurs in the relay device is determined, based on the state of the relay device acquired according to the state acquisition signal.

5 . The optical network system according to claim 1 , wherein the optical network system is a fish-bone type.

6 . An optical transmission device forming an optical network system with other optical transmission devices, the optical transmission device comprising:
a first transmitting unit configured to superimpose, on a main signal, a monitoring signal of a different wavelength from wavelengths of the other optical transmission devices; a first receiving unit configured to receive the main signal and extract the monitoring signal from the main signal received from the other optical transmission devices, a second transmitting unit configured to transmit, to a monitoring device, a reception status of the monitoring signal extracted by the first receiving unit; a third transmitting unit configured to transmit, according to a state acquisition instruction from the monitoring device for a device included in a failure occurrence section where a communication failure occurs among transmission sections between respective optical transmission devices, a state acquisition signal to the device; and a second receiving unit configured to receive, from the device, a state response of the device corresponding to the state acquisition signal transmitted.

7 . A failure occurrence section determination method in an optical network system formed by a plurality of optical transmission devices, the failure occurrence section determination method comprising:
superimposing, on a main signal to be transmitted, a monitoring signal of a different wavelength from wavelengths of other optical transmission devices; extracting monitoring signals from main signals received from the other optical transmission devices; and determining a failure occurrence section where a communication failure occurs, based on the monitoring signals extracted from the main signals, among transmission sections between the respective optical transmission devices.

Assignees

• Fujitsu Ltd

Inventors

• Hibino Hironori

Classifications

• H04B10/0771 Primary

  Fault location on the transmission path · CPC title

• H04B10/0795

  Performance monitoring; Measurement of transmission parameters · CPC title

• H04B10/27

  Arrangements for networking · CPC title

• H04B10/0791 Primary

  Fault location on the transmission path · CPC title

• H04B10/29

  Repeaters · CPC title