Interference management techniques for full-duplex wireless communications

• US 10,455,616 B2
• Filed: 06/05/2014
• Issued: 10/22/2019
• Est. Priority Date: 06/05/2014
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Huang, Po-Kai, Stacey, Robert
• Primary Examiner(s): Marcelo, Melvin C
• Application Number:
  US15/309,433
• Publication Number:
  US 20170150526A1
• Time in Patent Office: 1,965 Days
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 74/085 collision avoidance

Abstract

Interference management techniques for full-duplex wireless communications are described. In one embodiment, for example, an apparatus may comprise logic, at least a portion of which is in hardware, the logic to initiate a downlink (DL) transmission procedure for sending a DL data transmission, and during the DL transmission procedure, send an interference-contingent uplink (UL) transmission invitation identifying a destination of the DL data transmission and begin receiving a UL data transmission in response to the interference-contingent UL transmission invitation. Other embodiments are described and claimed.

Claims

1. An apparatus, comprising:

logic, at least a portion of which is in hardware, the logic to initiate a downlink (DL) transmission procedure for sending a DL data transmission, and during the DL transmission procedure, send an interference-contingent uplink (UL) transmission invitation identifying a destination of the DL data transmission and begin receiving a UL data transmission in response to the interference-contingent UL transmission invitation, the interference-contingent UL transmission invitation comprising a collateral interference margin for the DL data transmission.

2. The apparatus of claim 1, the interference-contingent UL transmission invitation comprising a request-to-send (RTS).

3. The apparatus of claim 1, the interference-contingent UL transmission invitation comprising an invitation for a specific remote device to perform UL transmission to the apparatus.

4. The apparatus of claim 1, the interference-contingent UL transmission invitation comprising a non-specific invitation for consideration by any of a plurality of remote devices.

5. The apparatus of claim 1, the logic to concurrently send an acknowledgment of the UL data transmission and receive an acknowledgment of the DL data transmission.

6. At least one non-transitory computer-readable storage medium comprising a set of instructions that, in response to being executed on a computing device, cause the computing device to:

initiate a downlink (DL) transmission procedure for sending a DL data transmission; and

during the DL transmission procedure;

send an interference-contingent uplink (UL) transmission invitation identifying a destination of the DL data transmission, the interference-contingent UL transmission invitation comprising a collateral interference margin for the DL data transmission; and

begin receiving a UL data transmission in response to the interference-contingent UL transmission invitation.

7. The at least one non-transitory computer-readable storage medium of claim 6, the interference-contingent UL transmission invitation comprising a request-to-send (RTS).

8. The at least one non-transitory computer-readable storage medium of claim 6, the interference-contingent UL transmission invitation comprising an invitation for a specific remote device to perform UL transmission to the apparatus.

9. The at least one non-transitory computer-readable storage medium of claim 6, the interference-contingent UL transmission invitation comprising a non-specific invitation for consideration by any of a plurality of remote devices.

10. The at least one non-transitory computer-readable storage medium of claim 6, comprising instructions that, in response to being executed on the computing device, cause the computing device to concurrently send an acknowledgment of the UL data transmission and receive an acknowledgment of the DL data transmission.

11. An apparatus, comprising:

logic, at least a portion of which is in hardware, the logic to receive an interference-contingent uplink (UL) transmission invitation identifying a destination device of a downlink (DL) data transmission, estimate a collateral interference resulting at the destination device from a prospective UL data transmission, and determine whether to perform the prospective UL data transmission based on a comparison of the estimated collateral interference with a collateral interference margin for the DL data transmission.

12. The apparatus of claim 11, the interference-contingent UL transmission invitation comprising the collateral interference margin for the DL data transmission.

13. The apparatus of claim 11, the logic to overhear a UL message originating from the destination device, the UL message indicating a UL transmit power for the UL message, determine a received signal strength for the UL message, and estimate the collateral interference based on the UL transmit power and the received signal strength.

14. The apparatus of claim 11, the logic to determine a minimum transmit power for the prospective UL data transmission and estimate the collateral interference based on the minimum transmit power.

15. The apparatus of claim 11, the logic to perform a random backoff and determine whether to perform the prospective UL data transmission based on an availability of a wireless channel following the random backoff.

16. The apparatus of claim 11, the logic to adjust a duration of the prospective UL data transmission.

17. The apparatus of claim 11, comprising:

a display;

a radio frequency (RF) transceiver; and

one or more RF antennas.

18. At least one non-transitory computer-readable storage medium comprising a set of instructions that, in response to being executed on a computing device, cause the computing device to:

receive an interference-contingent uplink (UL) transmission invitation identifying a destination device of a downlink (DL) data transmission;

estimate a collateral interference resulting at the destination device from a prospective UL data transmission; and

determine whether to perform the prospective UL data transmission based on a comparison of the estimated collateral interference with a collateral interference margin for the DL data transmission.

19. The at least one non-transitory computer-readable storage medium of claim 18, the interference-contingent UL transmission invitation comprising the collateral interference margin for the DL data transmission.

20. The at least one non-transitory computer-readable storage medium of claim 18, comprising instructions that, in response to being executed on the computing device, cause the computing device to:

overhear a UL message originating from the destination device, the UL message indicating a UL transmit power for the UL message;

determine a received signal strength for the UL message; and

estimate the collateral interference based on the UL transmit power and the received signal strength.

21. The at least one non-transitory computer-readable storage medium of claim 18, comprising instructions that, in response to being executed on the computing device, cause the computing device to:

determine a minimum transmit power for the prospective UL data transmission; and

estimate the collateral interference based on the minimum transmit power.

22. The at least one non-transitory computer-readable storage medium of claim 18, comprising instructions that, in response to being executed on the computing device, cause the computing device to:

perform a random backoff; and

determine whether to perform the prospective UL data transmission based on an availability of a wireless channel following the random backoff.

23. The at least one non-transitory computer-readable storage medium of claim 18, comprising instructions that, in response to being executed on the computing device, cause the computing device to adjust a duration of the prospective UL data transmission.