Title:
OPTICAL TRANSMISSION SYSTEM, OPTICAL RECEIVING DEVICE AND DELAY MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2022/190357
Kind Code:
A1
Abstract:
Provided is an optical transmission system comprising: an optical sending device; an optical receiving device; a communication device which is an object of delay measurement; and a transmission device that transmits signals between the optical receiving device and the communication device. The optical sending device includes a main signal transfer unit that sends out a main signal. The transmission device transmits, to the optical receiving device, the following: a first main signal which was sent from the optical sending device and was passed through the communication device; and a second main signal which was sent from the optical sending device and was not passed through the communication device. The optical receiving device includes a reception processing unit that uses the first main signal and the second main signal to measure a delay that has occurred at the communication device.
Inventors:
NISHIMOTO KEITA (JP)
ASAKA KOTA (JP)
TOYOSHIMA YUKIO (JP)
ASAKA KOTA (JP)
TOYOSHIMA YUKIO (JP)
Application Number:
PCT/JP2021/010061
Publication Date:
September 15, 2022
Filing Date:
March 12, 2021
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B10/077
Foreign References:
| JP2014216710A | 2014-11-17 | |||
| JP2016103766A | 2016-06-02 | |||
| JP2020102664A | 2020-07-02 | |||
| JPH11101717A | 1999-04-13 |
Other References:
MACHIZAWA, AKIHIKO ET AL.: "UDP Development of a Cascadable Passing Through Precision UDP Time-Stamping Device", J88-B) 10 THE IEICE TRANSACTIONS ON COMMUNICATIONS, vol. J88-B, no. 10, 2005, pages 2002 - 2011
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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