Interleaving for 10G GPON

• US 20080298806A1
• Filed: 03/19/2008
• Published: 12/04/2008
• Est. Priority Date: 05/30/2007
• Status: Active Grant

• Current Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Inventors: Effenberger, Frank J.
• Granted Patent: US 8,059,962 B2
• Time in Patent Office: Days
• US Class Current: 398/75
• CPC Class Codes: H04J 14/0226 Fixed carrier allocation, e.g. according to service
• 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 14/0247 Sharing one wavelength for at least a group of ONUs
• CPC Class Codes: H04J 14/025 using one wavelength per ONU, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
• CPC Class Codes: H04J 14/0282 WDM tree architectures
• 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 11/0071 Provisions for the electrical-optical layer interface
• CPC Class Codes: H04Q 2011/0086 Network resource allocation, dimensioning or optimisation

Abstract

An apparatus comprising a plurality of data framers, a time division multiplexer coupled to the data framers, and an optical transmitter coupled to the time division multiplexer. Also disclosed is an apparatus comprising an optical receiver, a time division demultiplexer coupled to the optical receiver, and a data framer coupled to the time division demultiplexer. Also disclosed is an apparatus comprising at least one component configured to implement a method comprising combining a first plurality of data frames corresponding to a first plurality of channels into a first plurality of combined data frames using time division multiplexing and transmitting the first combined data frames over a single optical channel.

Claims

1. An apparatus comprising:

a plurality of data framers;

a time division multiplexer coupled to the data framers; and

an optical transmitter coupled to the time division multiplexer.

2. The apparatus of claim 1, further comprising:

a wavelength division multiplexer (WDM) coupled to the optical transmitter; and

a plurality of optical receivers coupled to at least some of the data framers and the WDM.

3. The apparatus of claim 2, wherein the optical transmitter transmits at about 10 Gigabits per second (Gbps), and the optical receivers receive at about 1.25 Gbps.

4. The apparatus of claim 1, wherein the apparatus is part of an optical line terminal in a passive optical network.

5. An apparatus comprising:

an optical receiver;

a time division demultiplexer coupled to the optical receiver, and a data framer coupled to the time division demultiplexer.

6. The apparatus of claim 5, further comprising a control logic coupled to the time division demultiplexer and the data framer.

7. The apparatus of claim 6, further comprising:

an optical transmitter coupled to the data framer; and

a wavelength division multiplexer coupled to the optical transmitter and the optical receiver.

8. The apparatus of claim 7, where the optical transmitter transmits at about 1.25 Gigabits per second (Gbps), and the optical receivers receive at about 10 Gbps.

9. The apparatus of claim 5, wherein the apparatus is part of an optical network terminal in a passive optical network.

10. The apparatus of claim 5, wherein the time division demultiplexer ignores data not associated with the apparatus.

11. An apparatus comprising:

at least one component configured to implement a method comprising;

combining a first plurality of data frames corresponding to a first plurality of channels into a first plurality of combined data frames using time division multiplexing; and

transmitting the first combined data frames over a single optical channel.

12. The apparatus of claim 11, wherein the method further comprises:

receiving a second plurality of combined data frames; and

separating the second combined data frames into a second plurality of data frames.

13. The apparatus of claim 12, wherein each of the second plurality of data frames are received at about 1.25 Gbps.

14. The apparatus of claim 12, wherein the second combined data frames are separated using wavelength division demultiplexing.

15. The apparatus of claim 11, wherein the method further comprising assigning one of the channels to each of a plurality of optical network terminals (ONTs).

16. The apparatus of claim 15, wherein the method further comprising modifying the channel assignment based on the bandwidth required by the ONTs.

17. The apparatus of claim 15, wherein at least some of the ONTs ignore the data frames from the first combined data frames that are intended for other ONTs.

18. The apparatus of claim 11, wherein the channels in the first plurality of combined data frames are differentiated by an identification mark within each of the first plurality of data frames.

19. The apparatus of claim 11, wherein the first combined data frames are transmitted using a single wavelength or within a single wavelength band.

20. The apparatus of claim 11, wherein the first combined data frames are transmitted at about 10 Gigabits per second.