Method and device for amplifying uplink light of passive optical network, and storage medium

Patent metadata

Field	Value
Publication number	US-11070293-B2
Application number	US-201816649888-A
Country	US
Kind code	B2
Filing date	Sep 21, 2018
Priority date	Sep 21, 2017
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

The present disclosure provides a method and a device for amplifying uplink light of a passive optical network, and a computer-readable storage medium. The passive optical network includes an optical network unit, an optical line terminal, and an optical amplifier provided between the optical network unit and the optical line terminal, and the method include: receiving a registration signal transmitted from the optical line terminal; determining a gain value of the optical amplifier, and performing gain value adjustment on the optical amplifier according to the determined gain value; and completing registration when an uplink optical signal transmitted to the optical line terminal through the optical amplifier reaches preset power.

First claim

What is claimed is:

1. A method for amplifying uplink light of a passive optical network (PON), wherein the PON comprises an optical network unit (ONU), an optical line terminal (OLT), and an optical amplifier (OA), and the method comprises:
receiving, by the ONU, a registration signal transmitted from the OLT;
determining, by the ONU, a gain value of the OA, based on the registration signal; and
performing, by the ONU, gain value adjustment on the OA according to the determined gain value, so that registration is completed when an uplink optical signal transmitted to the OLT through the OA reaches preset power.

2. The method of claim 1 , wherein the OA comprises a first OA located on an ONU side; and
the first OA is separate from the ONU, or integrated with the ONU.

3. The method of claim 2 , wherein the step of determining the gain value of the OA comprises:
determining, by the ONU, a link attenuation value according to receiving power of the ONU and downlink signal transmitting power of the OLT when transmitting the registration signal; and
determining, by the ONU, a first gain value of the first OA as the gain value of the OA according to transmitting power of the ONU, receiving power of the OLT, and the link attenuation value.

4. The method of claim 2 , wherein the step of determining the gain value of the OA comprises:
determining, by the ONU, a basic value for current gain value adjustment when receiving the registration signal transmitted from the OLT; and
adjusting, by the ONU, the basic value forward according to a preset gain step value to obtain a first gain value of the first OA after the current gain value adjustment.

5. The method of claim 4 , wherein the step of determining the basic value for the current gain value adjustment when receiving the registration signal transmitted from the OLT comprises:
when receiving a registration signal transmitted from the OLT for the first time, determining, by the ONU, a minimum value of the first gain value of the first OA as the basic value for the current gain value adjustment; and
when receiving a registration signal transmitted from the OLT for the n th time, determining, by the ONU, the first gain value of the first OA obtained after the (n−1) th gain value adjustment performed according to a registration signal transmitted for the (n−1) th time as the basic value for the n th gain value adjustment, where n is an integer greater than or equal to 2.

6. The method of claim 4 , further comprising:
receiving, by the ONU, a new registration signal transmitted from the OLT when the uplink optical signal transmitted to the OLT through the OA does not reach the preset power.

7. The method of claim 2 , wherein the OA further comprises a second OA located at an OLT side; and
the second OA is separate from the OLT, or integrated with the OLT.

8. The method of claim 7 , wherein the step of determining the gain value of the OA comprises:
determining, by the ONU, a second gain value of the second OA;
determining, by the ONU, a link attenuation value according to receiving power of the ONU and downlink signal transmitting power of the OLT when transmitting the registration signal; and
determining, by the ONU, a first gain value of the first OA as the gain value of the OA according to transmitting power of the ONU, receiving power of the OLT, the determined second gain value of the second OA, and the link attenuation value.

9. The method of claim 7 , wherein the step of determining the gain value of the OA comprises:
determining, by the ONU, a basic value for current gain value adjustment when receiving the registration signal transmitted from the OLT; and
adjusting, by the ONU, the basic value forward according to a preset gain step value to obtain a first gain value of the first OA after the current gain value adjustment.

10. The method of claim 9 , further comprising:
receiving, by the ONU, a new registration signal transmitted from the OLT when the uplink optical signal transmitted to the OLT through the OA does not reach the preset power.

11. The method of claim 3 , wherein the PON further comprises a variable optical attenuator provided between the ONU and the OLT; and
when the determined gain value of the OA is less than zero, the gain value of the OA and the link attenuation value are adjusted to zero by the variable optical attenuator.

12. An apparatus for amplifying uplink light of a passive optical network (PON), applied to an optical network unit (ONU), wherein the PON comprises the ONU, an optical line terminal (OLT), and an optical amplifier (OA), and the apparatus comprises:
a memory configured to store computer instructions; and
a processor configured to execute the computer instructions stored in the memory, so as to perform a method comprising:
receiving a registration signal transmitted from the OLT;
determining a gain value of the OA, based on the registration signal; and
performing gain value adjustment on the OA according to the determined gain value, so that registration is completed when an uplink optical signal transmitted to the OLT through the OA reaches preset power.

13. A non-transitory computer-readable storage medium, storing one or more programs which, when executed by one or more processors, cause the one or more processors to perform the method for amplifying uplink light of a passive optical network according to claim 1 .

14. The method of claim 8 , wherein the PON further comprises a variable optical attenuator provided between the ONU and the OLT; and
when the determined gain value of the OA is less than zero, the gain value of the OA and the link attenuation value are adjusted to zero by the variable optical attenuator.

15. The apparatus of claim 12 , wherein the OA comprises a first OA located on an ONU side; and the first OA is separate from the ONU, or integrated with the ONU; and
the processor is further configured to execute the computer instructions stored in the memory, so as to perform:
determining a link attenuation value according to receiving power of the ONU and downlink signal transmitting power of the OLT when transmitting the registration signal; and
determining a first gain value of the first OA as the gain value of the OA according to transmitting power of the ONU, receiving power of the OLT, and the link attenuation value.

16. The apparatus of claim 12 , wherein the OA comprises a first OA located on an ONU side; and the first OA is separate from the ONU, or integrated with the ONU; and
the processor is further configured to execute the computer instructions stored in the memory, so as to perform:
determining a basic value for current gain value adjustment when receiving the registration signal transmitted from the OLT; and
adjusting the basic value forward according to a preset gain step value to obtain a first gain value of the first OA after the current gain value adjustment.

17. The apparatus of claim 12 , wherein the OA comprises a first OA located on an ONU side; and the first OA is separate from the ONU, or integrated with the ONU;
the OA further comprises a second OA located at an OLT side; and the second OA is separate from the OLT, or integrated with the OLT; and
the processor is further configured to execute the computer instructions stored in the memory, so as to perform:
determining a second gain value of the second OA;
determining a link attenuation value according to receiving power of the ONU and downlink signal transmitting power of the OLT when transmitting the registration signal; and
determining a fir

Assignees

• Zte Corp

Inventors

• Yang Wei
• Huang Xingang
• He Jiangyan

Classifications

• H04Q11/00

  Selecting arrangements for multiplex systems (multiplex systems H04J) · CPC title

• H04B10/298

  Two-way repeaters, i.e. repeaters amplifying separate upward and downward lines · CPC title

• H04B10/2939 Primary

  Network aspects · CPC title

• H04Q11/0067 Primary

  Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring · CPC title

• H04B10/2931 Primary

  using AGC (H04B10/294 takes precedence) · CPC title