PASSIVE OPTICAL NETWORK USER TERMINAL AND METHOD OF POWER SUPPLY CONTROL AND POWER SUPPLY STATE REPORTING FOR THE SAME

• US 20120027411A1
• Filed: 10/11/2011
• Published: 02/02/2012
• Est. Priority Date: 12/20/2005
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Gao, Hai, Dong, Yinghu
• Granted Patent: US 8,452,178 B2
• Time in Patent Office: Days
• US Class Current: 398/66
• CPC Class Codes: H04J 14/0221 Power control, e.g. to keep the total optical power constant
• CPC Class Codes: H04Q 11/0067 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 Class Codes: H04Q 2011/0049 Crosstalk reduction; Noise; Power budget
• CPC Class Codes: H04Q 2011/0079 Operation or maintenance aspects

Abstract

The present disclosure discloses a passive optical network (PON) user terminal comprising a passive optical network interface unit (PONIU) having access to a PON system, a service data distribution unit (SDDU) connected to the PONIU for distributing service data, a plurality of service processing units (SPUs) for receiving and accordingly processing the service data distributed by the SDDU, a power source for providing power to the above units, and a power supply control unit (PSCU) for controlling the activating/deactivating of the energy-saving power supply to the SPUs, the SDDU, and the PONIU. The present disclosure further provides a method for controlling the PON power supply and for reporting the power supply state. The present disclosure allows control of the energy usage of the PON user terminal to save power when a service in the PON user terminal is not used or when the user terminal uses a backup power source to supply power.

Claims

1. A passive optical network (PON) component, comprising:

a plurality of service processing units configured to process service data;

a service state checking unit configured to monitor usage of the plurality of service processing units;

a power supply control unit configured to activate an energy-saving power supply mode on at least one service processing unit when the at least one service processing unit is not in use;

wherein the PON component sends an alert message to an optical line terminal (OLT) when the at least one service processing unit of the PON component enters an energy-saving power supply mode, the alert message comprises an identifier of the PON component.

2. The PON component of claim 1, wherein the alert message further comprises an action identifier that indicates an operation of entering the energy-saving power supply mode.

3. The PON component of claim 2, wherein the PON component further receives a reply message from the OLT as a response to the alert message.

4. The PON component of claim 1, wherein the power supply control unit activates the energy-saving power supply the at least one service processing unit by disconnecting or decreasing a power supply to the at least one service processing unit.

5. The PON component of claim 1, further comprising:

a power source comprising a main power supply provided by a user premises, and a backup power supply being a battery installed in the PON component.

6. The PON component of claim 5, wherein the power supply control unit is further configured to activate the energy-saving power supply mode to at least one of the service processing units when the main power source is disconnected and the backup power source is providing power.

7. The PON component of claim 5, wherein the power supply control unit is further configured to activate the energy-saving power supply mode to at least one of the service processing units when the backup power source drops to a preset level.

8. The PON component of claim 1, wherein the PON component further comprises:

a PON interface unit configured to receive the service data from a PON system; and

a service data distribution unit configured to receive the service data from the PON interface unit and distribute a different type of service data to each of the service processing units.

9. The PON component of claim 8, wherein the power supply control unit is further configured to activate, upon determining that none of the service processing units is in use, the energy-saving power supply mode on all of the service processing units, the PON interface unit, and the service data distribution unit;

and

deactivate, upon detecting that one of the service processing units is needed, the energy-saving power supply on the needed service processing unit, the PON interface unit, and the service data distribution unit.

16. The method of claim 1, further comprising:

activating, upon determining that none of the service processing units is in use, the energy-saving power supply mode on all service processing units, a passive optical network interface unit, and a service data distribution unit; and

deactivating, upon detecting that one of the service processing units is needed, the energy-saving power supply on the needed service processing unit, the passive optical network interface unit, and the service data distribution unit.

10. A method comprising:

checking a usage state of each of service processing units in a passive optical network (PON) user terminal;

activating an energy-saving power supply mode on at least one service processing unit upon determining that the at least one service processing unit is not in use; and

sending an alert message to an optical line terminal (OLT) when the at least one service processing unit of the PON user terminal enters an energy-saving power supply mode, wherein the alert message comprises an identifier of the PON user terminal.

11. The method of claim 10, wherein the alert message further comprises an action identifier that indicates an operation of entering the energy-saving power supply mode.

12. The method of claim 10, wherein the activating an energy-saving power supply on at least one service processing unit of the PON user terminal comprises:

disconnecting or decreasing a power supply to at least one service processing unit in the PON user terminal.

13. The method of claim 10, wherein the PON user terminal comprises a main power supply provided by a user premises and a backup power supply being a battery installed in the PON user terminal.

14. The method of claim 13, further comprising:

activating the energy-saving power supply mode to at least one of the service processing units, when the main power source is disconnected and the backup power source is providing power.

15. The method of claim 13, further comprising:

activating the energy-saving power supply mode to at least one of the service processing units when the backup power source drops to a preset level.

17. A method comprising:

activating an energy-saving power supply mode on an optical network unit (ONU) in responsive to detection of inactivity at a service processing unit in the ONU; and

sending an alert message to an optical line terminal (OLT) to alert the OLT of a power supply state change in the ONU when the ONU enter the energy-saving power supply mode;

wherein the alert message comprises an identifier of the ONU that enters the energy-saving power supply mode, and an action identifier that indicates an operation of entering the energy-saving power supply mode.

18. The method of claim 17, wherein the action identifier identifies which of a plurality of, service processing units within the ONU had a power supply state change.

19. The method of claim 18, wherein the ONU comprises a main power supply provided by a user premises and a backup power supply being a battery installed in the PON user terminal.

20. The method of claim 19, further comprising:

activating the energy-saving power supply mode to at least one of the service processing units when the backup power source drops to a preset level.