Signal processing devices, systems and method, and signal transmission subsystem and system

Patent metadata

Field	Value
Publication number	US-12556296-B2
Application number	US-202218853497-A
Country	US
Kind code	B2
Filing date	Oct 18, 2022
Priority date	Apr 11, 2022
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A signal processing device includes a first photoelectric conversion module and a second photoelectric conversion module; the first photoelectric conversion module is configured to receive an optical signal to be sent that is sent by a time synchronization device, convert the optical signal to be sent into an electric signal to be sent, and transmit the electric signal to be sent to the second photoelectric conversion module, where the optical signal to be sent is generated by the time synchronization device according to an initial electrical signal, and the initial electrical signal includes a service signal and a time synchronization signal; and the second photoelectric conversion module is configured to convert the electrical signal to be sent into a first optical signal of a preset frequency, and send the first optical signal to a first optical path coupling device, causing the first optical path coupling device to couple the first optical signal to an optical signal transmission line for transmission.

First claim

What is claimed is:

1 . A signal processing device, comprising:
a first photoelectric conversion module, configured to receive an optical signal to be sent that is sent by a time synchronization device, convert the optical signal to be sent into an electric signal to be sent, and transmit the electric signal to be sent to a second photoelectric conversion module, wherein the optical signal to be sent is generated by the time synchronization device according to an initial electrical signal, and the initial electrical signal comprises a service signal and a time synchronization signal, causing that in a process of transmitting the time synchronization signal, the signal processing device does not need to extract the time synchronization signal from the service signal; and the second photoelectric conversion module, configured to convert the electrical signal to be sent into a first optical signal of a preset frequency, and send the first optical signal to a first optical path coupling device, causing the first optical path coupling device to couple the first optical signal to an optical signal transmission line for transmission.

2 . The signal processing device according to claim 1 , wherein,
the second photoelectric conversion module is further configured to receive a second optical signal of a preset frequency sent by a second optical path coupling device, convert the second optical signal into a second electrical signal to be processed, and send the second electrical signal to be processed to the first photoelectric conversion module, wherein the second optical signal is obtained by the second optical path coupling device from the optical signal transmission line; and the first photoelectric conversion module is further configured to convert the second electric signal to be processed into a second optical signal to be processed, and send the second optical signal to be processed to the time synchronization device.

3 . The signal processing device according to claim 2 , wherein a wavelength difference between the first optical signal and the second optical signal is less than or equal to a preset wavelength threshold.

4 . A signal processing system, comprising a time synchronization device, the signal processing device according to claim 1 , and a first optical path coupling device;
wherein the time synchronization device is configured to generate the optical signal to be sent according to an initial electrical signal, and send the optical signal to be sent to the signal processing device, and the initial electrical signal comprises a service signal and a time synchronization signal; the signal processing device is configured to convert the optical signal to be sent into the first optical signal of the preset frequency, and send the first optical signal to the first optical path coupling device; and the first optical path coupling device is configured to couple the first optical signal to the optical signal transmission line for transmission.

5 . A signal transmission subsystem, comprising a first signal processing system, a second signal processing system, and an optical signal transmission line, wherein the first signal processing system is the signal processing system according to claim 4 ; and
the first signal processing system and the second signal processing system are connected through the optical signal transmission line.

6 . A signal transmission system, comprising a first signal transmission subsystem, a second signal transmission subsystem, and a relay device,
wherein the first signal transmission subsystem and the second signal transmission subsystem are the signal transmission subsystems according to claim 5 ; and in the first signal transmission subsystem, the first photoelectric conversion module of the second signal processing system is connected to a first end of the relay device; and in the second signal transmission subsystem, the first photoelectric conversion module of the first signal processing system is connected to a second end of the relay device.

7 . A signal processing device, comprising:
a second photoelectric conversion module, configured to receive a first optical signal of a preset frequency sent by a first optical path coupling device, convert the first optical signal into a first electrical signal to be processed, and send the first electrical signal to be processed to a first photoelectric conversion module, wherein the first optical signal is obtained by the first optical path coupling device from an optical signal transmission line; and the first photoelectric conversion module, configured to convert the first electric signal to be processed into a first optical signal to be processed, and send the first optical signal to be processed to a time synchronization device; wherein the first photoelectric conversion module is further configured to receive an optical signal to be sent that is sent by the time synchronization device, convert the optical signal to be sent into an electric signal to be sent, and transmit the electrical signal to be sent to the second photoelectric conversion module, wherein the optical signal to be sent is generated by the time synchronization device according to an initial electrical signal, and the initial electrical signal comprises a service signal and a time synchronization signal, causing that in a process of transmitting the time synchronization signal, the signal processing device does not need to extract the time synchronization signal from the service signal; the second photoelectric conversion module is further configured to convert the electrical signal to be sent into a second optical signal of a preset frequency, and send the second optical signal to a second optical path coupling device, causing the second optical path coupling device to couple the second optical signal to the optical signal transmission line for transmission; and a wavelength difference between the first optical signal and the second optical signal is less than or equal to a preset wavelength threshold.

8 . A signal processing system, comprising a time synchronization device, the signal processing device according to claim 7 , and a first optical path coupling device;
wherein the first optical path coupling device is configured to obtain the first optical signal from the optical signal transmission line, and send the first optical signal to the signal processing device; the signal processing device is configured to convert the first optical signal into the first optical signal to be processed, and send the first optical signal to be processed to the time synchronization device; and the time synchronization device is configured to convert the first optical signal to be processed into a first target electrical signal.

9 . A signal transmission subsystem, comprising a first signal processing system, a second signal processing system, and an optical signal transmission line, wherein the first signal processing system is the signal processing system according to claim 8 ; and
the first signal processing system and the second signal processing system are connected through the optical signal transmission line.

10 . A signal processing method, comprising:
receiving an optical signal to be sent that is sent by a time synchronization device, wherein the optical signal to be sent is generated by the time synchronization device according to an initial electrical signal, and the initial electrical signal comprises a service signal and a time synchronization signal, and in a process of transmitting the time synchronization signal, the time synchronization signal does not need to be extracted from the service signal; converting the optical signal to be sen

Assignees

• China Telecom Co Ltd

Inventors

• Lou Xiaowei
• Li Junjie
• Huo Xiaoli
• Hu Qian
• Zhang Anxu

Classifications

• H04J2203/005

  Terminal equipment, e.g. codecs, synch · CPC title

• H04J14/0305

  in end terminals · CPC title

• H04J14/02

  Wavelength-division multiplex systems · CPC title

• H04J3/1652 Primary

  Optical Transport Network [OTN] · CPC title

• H04B10/25 Primary

  Arrangements specific to fibre transmission · CPC title