DYNAMIC SELECTION OF ANALOG INTERFERENCE CANCELLERS

• US 20170041095A1
• Filed: 08/06/2015
• Published: 02/09/2017
• Est. Priority Date: 08/06/2015
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Hwang, Insoo, Nguyen, Cong, Lee, Won-ick, Maggenti, Mark, Dural, Ozgur
• Application Number:
  US14/819,986
• Publication Number:
  US 20170041095A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 1/0475 with means for limiting noise, interference or distortion H04B1/0483 takes precedence
• CPC Class Codes: H04B 1/123 using adaptive balancing or compensation means adaptive filter circuits and algorithms H03H
• CPC Class Codes: H04B 1/525 with means for reducing leakage of transmitter signal into the receiver
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0209 in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0238 where the received signal is an unwanted signal, e.g. interference or idle signal
• CPC Class Codes: H04W 52/028 switching on or off only a part of the equipment circuit blocks
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A wireless device may determine the level of interference mitigation appropriate for the application and dynamically select a combination of interference cancellation components that satisfies that level. The combination of interference cancellation components may include components that consume power (e.g., active components) and components that do not consume power (e.g., passive components). The interference cancellation components may be used at the transmitter and/or the receiver. In some cases, the wireless device may also determine how much power is acceptable to expend on the interference mitigation. In such scenarios, the selection of the interference cancellation components may be such that the aggregated power consumption is less than the power expenditure limit.

Claims

1. A method of wireless communication, comprising:

determining, for a wireless device, at least one of a target interference cancellation or a target power consumption;

identifying a plurality of analog interference cancellers available for use in the wireless device;

selecting a combination of the available analog interference cancellers based at least in part on the target interference cancellation or the target power consumption; and

using the combination in a transceiver of the wireless device.

2. The method of claim 1, wherein selecting the combination of analog interference cancellers comprises:

selecting the combination to include one or more passive analog interference cancellers and one or more active analog interference cancellers.

3. The method of claim 1, further comprising:

determining that the target interference cancellation is below or equal to a threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator and an active interference canceller.

4. The method of claim 1, further comprising:

determining that the target interference cancellation is equal to or between a first threshold and a second threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator and a feed-forward power amplifier (FFPA).

5. The method of claim 1, further comprising:

determining that the target interference cancellation is greater than or equal to a threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator, a feed-forward power amplifier, and an active interference canceller.

6. The method of claim 1, further comprising:

measuring a signal power at the transceiver, wherein the determination of the target interference cancellation is based at least in part on the measurement.

7. The method of claim 1, further comprising:

accessing a look-up table, the look-up table indicating one or more of an estimated power consumption and interference cancellation for possible combinations of analog interference cancellers; and

selecting the combination of analog interference cancellers is based at least in part on the one or more estimated power consumption and interference cancellation for the possible combinations.

8. The method of claim 7, further comprising:

comparing at least one of the target interference cancellation or the target power consumption to corresponding estimations for each combination of analog interference cancellers; and

selecting the combination of analog interference cancellers is based at least in part on the comparison.

9. The method of claim 1, further comprising:

identifying a power margin for the wireless device; and

determining the target power consumption is based at least in part on the identified power margin.

10. The method of claim 1, further comprising:

identifying a priority associated with the wireless device; and

determining the at least one of the target interference cancellation or the target power consumption is based at least in part on the identified priority.

11. The method of claim 1, wherein selecting the combination of analog interference cancellers comprises:

active receiver noise canceller, or a passive transmitter noise canceller.

12. The method of claim 1, wherein selecting the combination of analog interference cancellers comprises:

selecting the combination to include one or more of a passive isolator, an active receiver noise canceller, or an active transmitter noise canceller.

13. The method of claim 1, wherein the plurality of analog interference cancellers comprises one or more passive analog interference cancellers which include one or more of a passive filter, a duplexer, a hybrid transformer, or a circulator.

14. The method of claim 1, wherein the plurality of analog interference cancellers comprises one or more active analog interference cancellers which include one or more of an active filter or a feed-forward power amplifier.

15. The method of claim 1, wherein selecting the combination of analog interference cancellers comprises:

selecting the combination to include a passive isolator, an associated tuning circuit, and an active analog interference canceller.

16. The method of claim 1, further comprising:

detecting a plurality of antennas at the transceiver; and

wherein selecting the combination of analog interference cancellers comprises;

selecting a combination of analog interference cancellers for each antenna of the plurality of antennas.

17. The method of claim 1, further comprising:

detecting a plurality of antennas at the transceiver; and

sharing one or more analog interference cancellers of the selected combination between two or more antennas of the plurality of antennas.

18. An apparatus for wireless communication, comprising:

means for determining, for a wireless device, at least one of a target interference cancellation or a target power consumption;

means for identifying a plurality of analog interference cancellers available for use in the wireless device;

means for selecting a combination of the available analog interference cancellers based at least in part on the target interference cancellation or the target power consumption; and

means for using the combination in a transceiver of the wireless device.

19. The apparatus of claim 18, wherein selecting the combination of analog interference cancellers comprises:

selecting the combination to include one or more passive analog interference cancellers and one or more active analog interference cancellers.

20. The apparatus of claim 18, further comprising:

means for determining that the target interference cancellation is below or equal to a threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator and an active interference canceller.

21. The apparatus of claim 18, further comprising:

means for determining that the target interference cancellation is equal to or between a first threshold and a second threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator and a feed-forward power amplifier.

22. The apparatus of claim 18, further comprising:

means for determining that the target interference cancellation is greater than or equal to a threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator, a feed-forward power amplifier, and an active interference canceller.

23. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to;

determine, for a wireless device, at least one of a target interference cancellation or a target power consumption;

identify a plurality of analog interference cancellers available for use in the wireless device;

select a combination of the available analog interference cancellers based at least in part on the target interference cancellation or the target power consumption; and

use the combination in a transceiver of the wireless device.

24. The apparatus of claim 23, wherein the instructions are operable to cause the apparatus to:

determine that the target interference cancellation is below or equal to a threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator and an active interference canceller.

25. The apparatus of claim 23, wherein the instructions are operable to cause the apparatus to:

determine that the target interference cancellation is equal to or between a first threshold and a second threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator and a feed-forward power amplifier.

26. The apparatus of claim 23, wherein the instructions are operable to cause the apparatus to:

determine that the target interference cancellation is greater than or equal to a threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator, a feed-forward power amplifier, and an active interference canceller.

27. A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:

determine, for a wireless device, at least one of a target interference cancellation or a target power consumption;

identify a plurality of analog interference cancellers available for use in the wireless device;

select a combination of the available analog interference cancellers based at least in part on the target interference cancellation or the target power consumption; and

use the combination in a transceiver of the wireless device.

28. The non-transitory computer-readable medium of claim 27, wherein the instructions are executable to:

determine that the target interference cancellation is below or equal to a threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator and an active interference canceller.

29. The non-transitory computer-readable medium of claim 27, wherein the instructions are executable to:

determine that the target interference cancellation is equal to or between a first threshold and a second threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator and a feed-forward power amplifier.

30. The non-transitory computer-readable medium of claim 27, wherein the instructions are executable to:

determine that the target interference cancellation is greater than or equal to a threshold; and

wherein selecting the combination of analog interference cancellers comprises;

selecting the combination to include a passive isolator, a feed-forward power amplifier, and an active interference canceller.