System and Method for Passive Optical Network Communication

• US 20140126910A1
• Filed: 11/04/2013
• Published: 05/08/2014
• Est. Priority Date: 11/05/2012
• Status: Active Grant

• Current Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Inventors: Luo, Yuanqiu, Effenberger, Frank J.
• Granted Patent: US 9,413,484 B2
• Time in Patent Office: Days
• US Class Current: 398/67
• CPC Class Codes: H04B 10/25 Arrangements specific to fibre transmission
• CPC Class Codes: H04B 10/27 Arrangements for networking
• CPC Class Codes: H04B 10/50 Transmitters
• CPC Class Codes: H04B 10/60 Receivers
• CPC Class Codes: H04J 14/0227 Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
• CPC Class Codes: H04J 14/0232 for downstream transmission
• CPC Class Codes: H04J 14/0235 for upstream transmission
• CPC Class Codes: H04J 14/0247 Sharing one wavelength for at least a group of ONUs
• CPC Class Codes: H04J 14/0252 Sharing one wavelength for at least a group of ONUs, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
• CPC Class Codes: H04J 14/026 using WDM channels of different transmission rates
• CPC Class Codes: H04J 14/0267 Optical signaling or routing
• CPC Class Codes: H04J 14/0298 with sub-carrier multiplexing [SCM]
• 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 2011/0086 Network resource allocation, dimensioning or optimisation
• CPC Class Codes: H04Q 2011/0096 Tree

Abstract

In one embodiment, a method for passive optical network (PON) communication includes broadcasting, by an optical line terminal (OLT), a first message including a first start time of a first quiet window and a first allocation identification number (Alloc-ID), where the first Alloc-ID indicates a first supported upstream line rate associated with the first quiet window. The method also includes receiving, by the OLT from a first optical network unit (ONU) during the first quiet window, a first serial number response, wherein a first transmitting upstream line rate of the first ONU is equal to the first supported upstream line rate.

Claims

1. A method for passive optical network (PON) communication, the method comprising:

broadcasting, by an optical line terminal (OLT), a first message comprising

a first start time of a first quiet window, and

a first allocation identification number (Alloc-ID), wherein the first Alloc-ID indicates a first supported upstream line rate associated with the first quiet window; and

receiving, by the OLT from a first optical network unit (ONU) during the first quiet window, a first serial number response, wherein a first transmitting upstream line rate of the first ONU is equal to the first supported upstream line rate.

2. The method of claim 1, wherein the first supported upstream line rate is 1.25 G.

3. The method of claim 1, wherein the first supported upstream line rate is 2.5 G.

4. The method of claim 1, wherein the first supported upstream line rate is 10 G.

5. The method of claim 1, further comprising:

broadcasting, by the OLT, a second message, comprising

a second start time of a second quiet window, and

a second Alloc-ID, wherein the second Alloc-ID indicates a second supported upstream line rate associated with the second quiet window, and wherein the second supported upstream line rate is greater than the first supported upstream line rate; and

receiving, by the OLT from a second ONU during the second quiet window, a second serial number response, wherein a second transmitting upstream line rate of the second ONU has the second supported upstream line rate.

6. The method of claim 5, wherein the first supported upstream line rate is 1.25 G and the second supported upstream line rate is 2.5 G.

7. The method of claim 5, wherein the first supported upstream line rate is 2.5 G and the second supported upstream line rate is 10 G.

8. The method of claim 1, further comprising determining the first Alloc-ID in accordance with the first supported upstream line rate.

9. The method of claim 1, further comprising privately communicating, by the OLT, with the first ONU.

10. The method of claim 9, wherein privately communicating, by the OLT, with the first ONU comprises transmitting, by the OLT to the first ONU, a data message.

11. The method of claim 9, wherein privately communicating, by the OLT with the first ONU comprises, receiving, by the OLT from the first ONU, a data message.

12. A method for passive optical network (PON) communication, the method comprising:

receiving, by an optical network unit (ONU) from an optical line terminal (OLT), a first message comprising

a first start time of a first quiet window, and

a first allocation identification number (Alloc-ID), wherein the first Alloc-ID indicates a first supported upstream line rate associated with the first quiet window;

when a transmitting upstream line rate of the ONU is equal to the first supported upstream line rate, transmitting, by the ONU to the OLT during the first quiet window, a first serial number response; and

when the transmitting upstream line rate of the ONU is not equal to the first supported upstream line rate, not transmitting, by the ONU to the OLT during the first quiet window.

13. The method of claim 12, wherein the first supported upstream line rate is 1.25 G.

14. The method of claim 12, wherein the first supported upstream line rate is 2.5 G.

15. The method of claim 12, wherein the first supported upstream line rate is 10 G.

16. The method of claim 12, further comprising privately communicating, by the ONU with the OLT.

17. The method of claim 16, wherein privately communicating, by the ONU with the OLT comprises transmitting, by the ONU to the OLT, a data message.

18. The method of claim 16, wherein privately communicating, by the ONU with the OLT comprises, receiving, by the ONU from the OLT, a data message.

19. An optical line terminal (OLT) comprising:

a processor; and

a computer readable storage medium storing programming for execution by the processor, the programming including instructions to

broadcast a first message comprising

a first start time of a first quiet window, and

a first allocation identification number (Alloc-ID), wherein the first Alloc-ID indicates a first supported upstream line rate associated with the first quiet window, and

receive, from an optical network unit (ONU) during the first quiet window, a first serial number response, wherein a transmitting upstream line rate of the ONU is equal to the first supported upstream line rate.

20. An optical network unit (ONU) comprising:

a processor; and

a computer readable storage medium storing programming for execution by the processor, the programming including instructions to

receive, from an optical line terminal (OLT), a first message comprising

a first start time of a first quiet window, and

a first allocation identification number (Alloc-ID), wherein the first Alloc-ID indicates a first supported upstream line rate associated with the first quiet window,

when a transmitting upstream line rate of the first ONU is equal to the first supported upstream line rate, transmit, to the OLT during the first quiet window, a first serial number response, and

when the transmitting upstream line rate of the ONU is not equal to the first supported upstream line rate, not transmit, by the ONU to the OLT during the first quiet window.