IP Library Granted Patent US 9,167,601
Granted Patent B2
US 9,167,601 · App. 14/456,381 · Granted Oct 20, 2015

System and method for medium access control enabling both full-duplex and half-duplex communications

Inventors: Vaneet Aggarwal (Parsippany, NJ); Rittwik Jana (Parsippany, NJ); Christopher W. Rice (Parsippany, NJ); Nemmara K. Shankaranarayanan (Bridgewater, NJ)
Assignee: AT&T Intellectual Property I, L.P.
H04W74/0816H04L5/143H04L5/16H04W16/14H04W28/22H04L1/1607H04L5/1461H04W28/06H04W80/02H04W88/06H04W92/18
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Quick Facts
Patent No.
US 9,167,601
App. No.
14/456,381
Granted
Oct 20, 2015
Kind
B2
Abstract

Disclosed herein are systems, methods, and non-transitory computer-readable storage media for a modified MAC protocol which can facilitate communications with both full-duplex and half-duplex devices. A system configured according to the disclosed method can enable communications between an Access Point (AP) and a client in either full duplex or half duplex. The system can similarly enable peer-to-peer communications in both full duplex and half duplex communication modes.

Claims (49)

1. A method comprising:

communicating transmission data at a first rate on a frequency spectrum; and

upon receiving data in the frequency spectrum while communicating the transmission data:

stopping communication of the transmission data at a current frame;

dropping the current frame; and

communicating, beginning with a frame which immediately follows the current frame, the transmission data at a reduced rate on the frequency spectrum.

2. The method of claim 1 , wherein the transmission data is communicated in a first communication format and the data is received in a second communication format which is dissimilar to the first communication format.

3. The method of claim 2 , wherein the first communication format comprises a full duplex communication format and the second communication format comprises a half duplex communication format.

4. The method of claim 1 , further comprising:

preparing self-interference cancellation while communicating first transmission data at the first rate; and

applying the self-interference cancellation only when receiving the data.

5. The method of claim 1 , wherein the current frame is not retransmitted after dropping the current frame.

6. The method of claim 1 , further comprising:

upon detecting a collision, stopping communication of the transmission data; and

communicating a jam signal.

7. The method of claim 6 , wherein the jam signal is received by a plurality of full duplex clients.

8. A system comprising:

a processor; and

a computer-readable storage medium having instructions stored which, when executed by the processor, cause the processor to perform operations comprising:

communicating transmission data at a first rate on a frequency spectrum; and

upon receiving data in the frequency spectrum while communicating the transmission data:

stopping communication of the transmission data at a current frame;

dropping the current frame; and

communicating, beginning with a frame which immediately follows the current frame, the transmission data at a reduced rate on the frequency spectrum.

9. The system of claim 8 , wherein the transmission data is communicated in a first communication format and the data is received in a second communication format which is dissimilar to the first communication format.

10. The system of claim 9 , wherein the first communication format comprises a full duplex communication format and the second communication format comprises a half duplex communication format.

11. The system of claim 8 , the computer-readable storage medium having additional instructions stored which result in operations comprising:

preparing self-interference cancellation while communicating first transmission data at the first rate; and

applying the self-interference cancellation only when receiving the data.

12. The system of claim 8 , wherein the current frame is not retransmitted after dropping the current frame.

13. The system of claim 8 , the computer-readable storage medium having additional instructions stored which result in operations comprising:

upon detecting a collision, stopping communication of the transmission data; and

communicating a jam signal.

14. The system of claim 13 , wherein the jam signal is received by a plurality of full duplex clients.

15. A computer-readable storage device having instructions stored which, when executed by a computing device, cause the computing device to perform operations comprising:

communicating transmission data at a first rate on a frequency spectrum; and

upon receiving data in the frequency spectrum while communicating the transmission data:

stopping communication of the transmission data at a current frame;

dropping the current frame; and

communicating, beginning with a frame which immediately follows the current frame, the transmission data at a reduced rate on the frequency spectrum.

16. The computer-readable storage device of claim 15 , wherein the transmission data is communicated in a first communication format and the data is received in a second communication format which is dissimilar to the first communication format.

17. The computer-readable storage device of claim 16 , wherein the first communication format comprises a full duplex communication format and the second communication format comprises a half duplex communication format.

18. The computer-readable storage device of claim 15 , having additional instructions stored which result in operations comprising:

preparing self-interference cancellation while communicating first transmission data at the first rate; and

applying the self-interference cancellation only when receiving the data.

19. The computer-readable storage device of claim 15 , wherein the current frame is not retransmitted after dropping the current frame.

20. The computer-readable storage device of claim 15 , having additional instructions stored which result in operations comprising:

upon detecting a collision, stopping communication of the transmission data; and

communicating a jam signal.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 5, 2015
From: AGGARWAL, VANEET; JANA, RITTWIK; RICE, CHRISTOPHER W.; SHANKARANARAYANAN, NEMMARA K.
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 035582/0190 →
Continuity (2)
Continuation 13549214 · Jul 13, 2012
Related Publication 20140348033A1 · Nov 27, 2014