System and method for reducing interference from neighboring wireless devices

Patent metadata

Field	Value
Publication number	US-10917859-B2
Application number	US-202016791219-A
Country	US
Kind code	B2
Filing date	Feb 14, 2020
Priority date	Aug 31, 2016
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

A technique is disclosed for reducing interference in a communication system including a plurality of wireless devices. A first device transmits a frame (e.g., an RTS frame or a CTS frame) to a second device, the frame including information from which a non-target third device may use to estimate potential interference at the first device based on a proposed transmission to a fourth device. The information includes at least one of an interference and sensitivity factor (ISF), transmit power, and reciprocity factor (a difference between an antenna receive gain and an antenna transmit gain). Using the information in the frame to estimate the potential interference at the first device, the third device may choose to proceed with the proposed transmission if the estimated potential interference is less than a threshold; or withdraw or modify the proposed transmission if the estimated potential interference is greater than or equal to a threshold.

First claim

What is claimed is:

1. A method for wireless communications, comprising:
generating at least one frame including information from which at least one first wireless node is able to estimate a potential interference at an apparatus configured to transmit the at least one frame, wherein the information includes an interference sensitivity factor (ISF) related to a transmit power and a reciprocity factor of the apparatus; and
outputting the at least one frame for transmission to at least one second wireless node.

2. The method of claim 1 , wherein the transmit power is associated with transmitting the at least one frame to the at least one second wireless node.

3. The method of claim 1 , wherein the at least one frame comprises a plurality of frames, and wherein the ISF is related to a plurality of transmit powers for transmitting the plurality of frames, respectively.

4. The method of claim 3 , wherein the ISF is related to an average or maximum of the plurality of transmit powers for transmitting the plurality of frames.

5. The method of claim 1 , wherein the reciprocity factor is related to an antenna transmit gain and an antenna receive gain associated with an antenna used for transmitting the at least one frame to and receiving at least one other frame from the at least one second wireless node, respectively.

6. The method of claim 1 , wherein the transmit power is associated with transmitting the at least one frame to the at least one second wireless node and the reciprocity factor is associated with an antenna used for transmitting the at least one frame to and receiving at least one other frame from the at least one second wireless node, respectively.

7. The method of claim 1 , wherein the ISF is related to a receive sensitivity for receiving at least one other frame from the at least one second wireless node.

8. The method of claim 1 , wherein the information comprises a receive sensitivity for receiving at least one other frame from the at least one second wireless node.

9. The method of claim 1 , wherein the information comprises an antenna receive gain and an antenna transmit gain associated with an antenna used for transmitting the at least one frame to and receiving at least one other frame from the at least one second wireless node, respectively.

10. The method of claim 1 , wherein the at least one frame comprises a Request to Send (RTS) frame.

11. The method of claim 10 , wherein the RTS frame comprises a control trailer having the information.

12. The method of claim 1 , wherein the at least one frame comprises a Clear to Send (CTS) frame.

13. The method of claim 12 , wherein the CTS frame comprises a control trailer having the information.

14. An apparatus for wireless communications, comprising:
means for generating at least one frame including information from which at least one first wireless node is able to estimate a potential interference at the apparatus, wherein the information includes an interference sensitivity factor (ISF) related to a transmit power and a reciprocity factor of the apparatus; and
means for outputting the at least one frame for transmission to at least one second wireless node.

15. The apparatus of claim 14 , wherein the transmit power is associated with transmitting the at least one frame to the at least one second wireless node.

16. The apparatus of claim 14 , wherein the at least one frame comprises a plurality of frames, and wherein the ISF is related to a plurality of transmit powers for transmitting the plurality of frames, respectively.

17. The apparatus of claim 16 , wherein the ISF is related to an average or maximum of the plurality of transmit powers for transmitting the plurality of frames.

18. The apparatus of claim 14 , wherein the reciprocity factor is related to an antenna transmit gain and an antenna receive gain associated with an antenna used for transmitting the at least one frame to and receiving at least one other frame from the at least one second wireless node, respectively.

19. The apparatus of claim 14 , wherein the transmit power is associated with transmitting the at least one frame to the at least one second wireless node and an antenna transmit gain and an antenna receive gain associated with an antenna used for transmitting the at least one frame to and receiving the at least one frame from the at least one second wireless node, respectively.

20. The apparatus of claim 14 , wherein the ISF is related to a receive sensitivity for receiving at least one other frame from the at least one second wireless node.

21. The apparatus of claim 14 , wherein the information comprises a receive sensitivity for receiving at least one other frame from the at least one second wireless node.

22. The apparatus of claim 14 , wherein the information comprises an antenna receive gain and an antenna transmit gain associated with an antenna used for transmitting the at least one frame to the at least one second wireless node.

23. The apparatus of claim 14 , wherein the at least one frame comprises a Request to Send (RTS) frame.

24. The apparatus of claim 23 , wherein the RTS frame comprises a control trailer having the information.

25. The apparatus of claim 14 , wherein the at least one frame comprises a Clear to Send (CTS) frame.

26. The apparatus of claim 25 , wherein the CTS frame comprises a control trailer having the information.

27. A method for wireless communications, comprising:
receiving at least one first frame from a first wireless node;
estimating a potential interference at the first wireless node based on information in the at least one first frame and a proposed transmission scheme for transmitting at least one second frame to a second wireless node, wherein the information includes an interference sensitivity factor (ISF) related to a transmit power and a reciprocity factor of the first wireless node; and
performing an operation based on the estimated potential interference.

28. The method of claim 27 , wherein the transmit power is associated with transmission of the at least one first frame by the first wireless node.

29. The method of claim 27 , wherein the at least one first frame comprises a plurality of first frames, and wherein the ISF is related to a plurality of transmit powers for transmitting the plurality of first frames, respectively.

30. The method of claim 29 , wherein the ISF is related to an average or maximum of the transmit powers for transmitting the plurality of first frames.

31. The method of claim 27 , wherein the reciprocity factor is related to an antenna transmit gain and an antenna receive gain associated with an antenna used for transmitting the at least one first frame and receiving at least one third frame by the first wireless node, respectively.

32. The method of claim 27 , wherein the transmit power is associated with transmitting the at least one first frame by the first wireless node and an antenna transmit gain and an antenna receive gain associated with an antenna used for transmitting the at least one first frame and receiving at least one third frame by the first wireless node, respectively.

33. The method of claim 27 , wherein the ISF is related to a receive sensitivity for receiving at least one third frame by the first wireless node.

Assignees

• Qualcomm Inc

Inventors

• Sanderovich Amichai
• Eitan Alecsander Petru
• Kasher Assaf Yaakov

Classifications

• H04W74/0816

  with collision avoidance · CPC title

• H04W52/42

  in systems with time, space, frequency or polarisation diversity · CPC title

• H04W52/243 Primary

  taking into account interferences · CPC title

• H04B17/373

  Predicting channel quality {or other radio frequency [RF]} parameters · CPC title