Coordinating frequency division multiplexing transmissions

• US 10,158,457 B2
• Filed: 12/02/2015
• Issued: 12/18/2018
• Est. Priority Date: 12/02/2014
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Inventors: Kliger, Avraham, Ohana, Yitshak
• Primary Examiner(s): Patel, Parth
• Application Number:
  US14/957,458
• Publication Number:
  US 20160156439A1
• Time in Patent Office: 1,112 Days
• CPC Class Codes: H04B 3/542 the information being in digital form
• CPC Class Codes: H04L 47/806 Broadcast or multicast traffic
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation

Abstract

A device for coordinating frequency division multiplexing transmissions over a shared transmission medium may include a processor circuit configured to receive bandwidth requests from devices for transmissions over the shared transmission medium during a time period. A first bandwidth request may correspond to a point-to-multipoint transmission over the shared transmission medium. The processor circuit may be further configured to schedule bandwidth allocations on the shared transmission medium for the time period based at least in part on the bandwidth requests, where a first bandwidth allocation that corresponds to the first point-to-multipoint transmission is scheduled during the time period prior to other bandwidth allocations. The processor circuit may be further configured to transmit, over the shared transmission medium, an indication of the bandwidth allocations.

Claims

1. A computer program product comprising instructions stored in a non-transitory computer-readable storage medium, the instructions comprising:

instructions to receive a plurality of bandwidth requests for transmissions over a shared transmission medium during a time period, the transmissions being from a plurality of client devices to a server device;

instructions to determine a total number of symbols associated with the plurality of bandwidth requests based at least in part on the plurality of bandwidth requests and a respective bitloading associated with each respective bandwidth request of the plurality of bandwidth requests, wherein the respective bitloading associated with each respective bandwidth request of the plurality of bandwidth requests indicates a number of bits per symbol for each respective bandwidth request of the plurality of bandwidth requests;

instructions to determine a size of a frame associated with the plurality of bandwidth requests based at least in part on the total number of symbols;

instructions to generate allocations of one or more portions of the frame for each respective bandwidth request of the plurality of bandwidth requests; and

instructions to transmit, over the shared transmission medium, the size of the frame and the allocations of the one or more portions of the frame.

2. The computer program product of claim 1, wherein the instructions to generate the allocations of the one or more portions of the frame for each respective bandwidth request of the plurality of bandwidth requests further comprises:

instructions to determine, for each respective bandwidth request of the plurality of bandwidth requests, a number of requested symbols based at least in part on each respective bandwidth request of the plurality of bandwidth requests and the respective bitloading associated with each respective bandwidth request of the plurality of bandwidth requests; and

instructions to determine, for each respective bandwidth request of the plurality of bandwidth requests, a number of portions of the frame to provide the number of requested symbols.

3. The computer program product of claim 1, wherein the shared transmission medium comprises at least one of a coaxial transmission medium or a powerline transmission medium, and the time period comprises a medium access plan cycle.

4. The computer program product of claim 1, wherein at least one of the one or more portions comprises at least one of a subcarrier, a sub-channel, or a resource block.

5. The computer program product of claim 1, wherein the frame comprises an orthogonal frequency-division multiple access frame.

6. The computer program product of claim 1, wherein at least one of the plurality of bandwidth requests is for a peer-to-peer transmission over a plurality of channels of the shared transmission medium.

7. The computer program product of claim 6, wherein the plurality of channels are bonded at a physical coding sublayer, a physical medium attachment sublayer, or a physical medium dependent sublayer.

8. A method comprising:

receiving a plurality of bandwidth requests for transmissions over a shared transmission medium during a time period, the transmissions being from a plurality of client devices to a server device;

determining a total number of symbols associated with the plurality of bandwidth requests based at least in part on the plurality of bandwidth requests and a respective bitloading associated with each respective bandwidth request of the plurality of bandwidth requests, wherein the respective bitloading associated with each respective bandwidth request of the plurality of bandwidth requests indicates a number of bits per symbol for each respective bandwidth request of the plurality of bandwidth requests;

determining a size of a frame associated with the plurality of bandwidth requests based at least in part on the total number of symbols;

generating allocations of one or more portions of the frame for each respective bandwidth request of the plurality of bandwidth requests; and

transmitting, over the shared transmission medium, the size of the frame and the allocations of the one or more portions of the frame.

9. The method of claim 8, wherein generating the allocations of the one or more portions of the frame for each respective bandwidth request of the plurality of bandwidth requests comprises:

determining, for each respective bandwidth request of the plurality of bandwidth requests, a number of requested symbols based at least in part on each respective bandwidth request of the plurality of bandwidth requests and the respective bitloading associated with each respective bandwidth request of the plurality of bandwidth requests; and

determining, for each respective bandwidth request of the plurality of bandwidth requests, a number of portions of the frame to provide the number of requested symbols.

10. The method of claim 8, wherein the shared transmission medium comprises at least one of a coaxial transmission medium or a powerline transmission medium, and the time period comprises a medium access plan cycle.

11. The method of claim 8, wherein at least one of the one or more portions comprises at least one of a subcarrier, a sub-channel, or a resource block.

12. The method of claim 8, wherein the frame comprises an orthogonal frequency-division multiple access frame.

13. The method of claim 8, wherein at least one of the plurality of bandwidth requests is for a peer-to-peer transmission over a plurality of channels of the shared transmission medium.

14. The method of claim 13, wherein the plurality of channels are bonded at a physical coding sublayer, a physical medium attachment sublayer, or a physical medium dependent sublayer.

15. A device comprising:

a memory; and

at least one processor configured to;

receive a plurality of bandwidth requests for transmissions over a shared transmission medium during a time period, the transmissions being from a plurality of client devices to a server device;

determine a total number of symbols associated with the plurality of bandwidth requests based at least in part on the plurality of bandwidth requests and a respective bitloading associated with each respective bandwidth request of the plurality of bandwidth requests, wherein the respective bitloading associated with each respective bandwidth request of the plurality of bandwidth requests indicates a number of bits per symbol for each respective bandwidth request of the plurality of bandwidth requests;

determine a size of a frame associated with the plurality of bandwidth requests based at least in part on the total number of symbols;

generate allocations of one or more portions of the frame for each respective bandwidth request of the plurality of bandwidth requests; and

transmit, over the shared transmission medium, the size of the frame and the allocations of the one or more portions of the frame.

16. The device of claim 15, wherein the shared transmission medium comprises at least one of a coaxial transmission medium or a powerline transmission medium, and the time period comprises a medium access plan cycle.

17. The device of claim 15, wherein at least one of the one or more portions comprises at least one of a subcarrier, a sub-channel, or a resource block.

18. The device of claim 15, wherein the frame comprises an orthogonal frequency-division multiple access frame.

19. The device of claim 15, wherein at least one of the plurality of bandwidth requests is for a peer-to-peer transmission over a plurality of channels of the shared transmission medium.

20. The device of claim 19, wherein the plurality of channels are bonded at a physical coding sublayer, a physical medium attachment sublayer, or a physical medium dependent sublayer.