RECEIVER MEASUREMENT ASSISTED ACCESS POINT CONTROL

• US 20140226506A1
• Filed: 03/15/2013
• Published: 08/14/2014
• Est. Priority Date: 02/14/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: SADEK, Ahmed Kamel
• Granted Patent: US 9,451,624 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04J 3/1694 Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers Passive Optical Networks H04Q11/0062
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

Methods and apparatus are provided for receiver measurement assisted access point control. A method operable by a Wi-Fi network entity includes signaling at least one trigger indication to at least one station served by the Wi-Fi network entity for interference measurements. The method includes receiving interference measurements taken based on the at least one trigger indication from the at least one station. The method includes tuning transmitter parameters based on the received interference measurements.

Claims

1. A method operable by a Wi-Fi network entity, the method comprising:

signaling at least one trigger indication to at least one station served by the Wi-Fi network entity for interference measurements;

receiving interference measurements taken based on the at least one trigger indication from the at least one station; and

tuning transmitter parameters based on the received interference measurements.

2. The method of claim 1, wherein the tuning the transmitter parameters comprises:

selecting at least one channel, channel rate control loop setting, or transmit power to communicate with the at least one station;

or

deciding whether to use RTS/CTS.

3. The method of claim 1, wherein the at least one trigger indication is based on at least one of a collision rate, duty cycle, or adjacent channel interference.

4. The method of claim 1, further comprising signaling a time offset for the at least one trigger indication.

5. The method of claim 4, wherein the time offset is based on a randomization function based on a beacon time seed.

6. The method of claim 5, wherein the time offset indicates a waiting period for the at least on station to start measurements after an occurrence of a trigger associated with the at least one trigger indication.

7. The method of claim 1, further comprising communicating with the at least one station on the selected at least one channel.

8. The method of claim 2, wherein the selecting the at least one channel comprises selecting at least two channels, and the method further comprising bonding the at least two channels for communication with the at least one station.

9. The method of claim 2, wherein the selecting the at least one channel comprises selecting at least two channels, and the method further comprising communicating with a first station on a first of the at least two channels, and communicating with a second station on a second of the at least two channels.

10. The method of claim 2, wherein the selecting the at least one channel comprises selecting at least two channels, and the method further comprising communicating with the at least one station based on TDM across the at least two channels.

11. The method of claim 1, further comprising sending a CTS2S to the at least one station during a tuning operation from a first channel to a second channel.

12. The method of claim 11, further comprising transmitting an RTS/CTS signal prior to measuring interference.

13. The method of claim 2, wherein the selecting the at least one channel comprises selecting based on a joint metric or UL and DL channel quality.

14. A Wi-Fi apparatus comprising:

at least one processor configured to signal at least one trigger indication to at least one station served by the Wi-Fi network entity for interference measurements, receive interference measurements taken based on the at least one trigger indication from the at least one station, and tune transmitter parameters based on the received interference measurements; and

a memory coupled to the at least one processor for storing data.

15. The Wi-Fi apparatus of claim 14, wherein to tune the transmitter parameters comprises to:

select at least one channel, channel rate control loop setting, or transmit power to communicate with the at least one station;

or

decide whether to use RTS/CTS.

16. The Wi-Fi apparatus of claim 14, wherein the at least one trigger indication is based on at least one of a collision rate, duty cycle, or adjacent channel interference.

17. The Wi-Fi apparatus of claim 14, wherein the at least one processor is further configured to signal a time offset for the at least one trigger indication.

18. The Wi-Fi apparatus of claim 17, wherein the time offset is based on a randomization function based on a beacon time seed.

19. The Wi-Fi apparatus of claim 14, wherein the at least one processor is further configured to communicate with the at least one station on the selected at least one channel.

20. The Wi-Fi apparatus of claim 15, wherein to select the at least one channel comprises to select at least two channels, and wherein at least one processor is further configured to bond the at least two channels for communication with the at least one station.

21. The Wi-Fi apparatus of claim 15, wherein to select the at least one channel comprises selecting at least two channels, and wherein at least one processor is further configured to communicate with a first station on a first of the at least two channels, and communicate with a second station on a second of the at least two channels.

22. The Wi-Fi apparatus of claim 15, wherein to select the at least one channel comprises to select at least two channels, and wherein at least one processor is further configured to communicate with the at least one station based on TDM across the at least two channels.

23. The Wi-Fi apparatus of claim 14, further comprising sending a CTS2S to the at least one station during a tuning operation from a first channel to a second channel.

24. The Wi-Fi apparatus of claim 23, further comprising transmitting an RTS/CTS signal prior to measuring interference.

25. The Wi-Fi apparatus of claim 15, wherein to select the at least one channel comprises to select based on a joint metric or UL and DL channel quality.

26. A Wi-Fi apparatus comprising:

means for signaling at least one trigger indication to at least one station served by the Wi-Fi network entity for interference measurements;

means for receiving interference measurements taken based on the at least one trigger indication from the at least one station; and

means for tuning transmitter parameters based on the received interference measurements.

27. The Wi-Fi apparatus of claim 26, wherein the means for tuning is further configured for:

selecting at least one channel, channel rate control loop setting, or transmit power to communicate with the at least one station;

or

deciding whether to use RTS/CTS.

28. The Wi-Fi apparatus of claim 26, wherein the at least one trigger indication is based on at least one of a collision rate, duty cycle, or adjacent channel interference.

29. The Wi-Fi apparatus of claim 26, further comprising means for signaling a time offset for the at least one trigger indication.

30. The Wi-Fi apparatus of claim 29, wherein the time offset is based on a randomization function based on a beacon time seed.

31. A computer program product comprising:

computer readable medium storing code for causing at least one computer to;

signal at least one trigger indication to at least one station served by the Wi-Fi network entity for interference measurements;

receive interference measurements taken based on the at least one trigger indication from the at least one station; and

tune transmitter parameters based on the received interference measurements.

32. The computer program product of claim 31, wherein the means for tuning is further configured for:

selecting at least one channel, channel rate control loop setting, or transmit power to communicate with the at least one station;

or

deciding whether to use RTS/CTS.

33. The computer program product of claim 31, wherein the at least one trigger indication is based on at least one of a collision rate, duty cycle, or adjacent channel interference.

34. The computer program product of claim 31, wherein the computer readable medium further store code for causing the at least one computer to signal a time offset for the at least one trigger indication.

35. The computer program product of claim 34, wherein the time offset is based on a randomization function based on a beacon time seed.

36. A method operable by a Wi-Fi station, the method comprising:

receiving at least one trigger indication from a network entity for interference measurements;

measuring interference based on the received at least one trigger; and

sending the measured interference to the network entity.

37. The method of claim 36, wherein the at least one trigger indication is based on at least one of a collision rate, duty cycle, or adjacent channel interference.

38. The method of claim 36, wherein measuring interference comprises measuring interference on different channels.

39. The method of claim 36, further comprising receiving a start time offset for measuring the interference for the at least one trigger indication.

40. The method of claim 39, wherein the time offset is based on a randomization function based on a beacon time seed.

41. The method of claim 36, further comprising transmitting a CTS2S signal prior to measuring interference.

42. The method of claim 41, further comprising transmitting an RTS/CTS signal prior to measuring interference.

43. The method of claim 38, wherein measuring interference comprises detecting MAC IDs and BSSIDs on each of the different channels with interference duty cycle and interference level above a threshold.

44. The method of claim 36, further comprising:

receiving an indication of at least one channel selection, and

communicating with the network entity on the selected at least one channel.

45. The method of claim 36, further comprising transmitting a CTS2S signal prior to measuring interference.

46. The method of claim 36, further comprising:

measuring a first interference value without a CTS2S;

measuring a second interference value after transmitting the CTS2S; and

sending the first and second interference values to the network entity.

47. The method of claim 46, wherein sending the measured interference comprises sending the first and second interference values for the network entity to tune transmitter parameters.

48. A Wi-Fi apparatus comprising:

at least one processor configured to receive at least one trigger indication from a network entity for interference measurements, measure interference based on the received at least one trigger, and send the measured interference to the network entity; and

a memory coupled to the at least one processor for storing data.

49. The Wi-Fi apparatus of claim 48, wherein the at least one trigger indication is based on at least one of a collision rate, duty cycle, or adjacent channel interference.

50. The Wi-Fi apparatus of claim 48, wherein to measure interference comprises to measure interference on different channels.

51. The Wi-Fi apparatus of claim 48, wherein the at least one processor is further configured to receive a start time for the at least one trigger indication.

52. The Wi-Fi apparatus of claim 51, wherein the time offset is based on a randomization function based on a beacon time seed.

53. The Wi-Fi apparatus of claim 48, wherein the at least one processor is further configured to transmit a CTS2S signal prior to measuring interference.

54. The Wi-Fi apparatus of claim 53, wherein the at least one processor is further configured to transmit an RTS/CTS signal prior to measuring interference.

55. A Wi-Fi apparatus comprising:

means for receiving at least one trigger indication from a network entity for interference measurements;

means for measuring interference based on the received at least one trigger; and

means for sending the measured interference to the network entity.

56. The Wi-Fi apparatus of claim 55, wherein the at least one trigger indication is based on at least one of a collision rate, duty cycle, or adjacent channel interference.

57. The Wi-Fi apparatus of claim 55, wherein to measure interference comprises to measure interference on different channels.

58. The Wi-Fi apparatus of claim 55, further comprising means for receiving a start time for the at least one trigger indication.

59. The Wi-Fi apparatus of claim 58, wherein the time offset is based on a randomization function based on a beacon time seed.

60. The Wi-Fi apparatus of claim 55, further comprising means for transmitting a CTS2S signal prior to measuring interference.

61. The Wi-Fi apparatus of claim 60, further comprising means for transmitting an RTS/CTS signal prior to measuring interference.

62. A computer program product comprising:

computer readable medium storing code for causing at least one computer to;

receive at least one trigger indication from a network entity for interference measurements;

measure interference based on the received at least one trigger; and

send the measured interference to the network entity.

63. The computer program product of claim 62, wherein the at least one trigger indication is based on at least one of a collision rate, duty cycle, or adjacent channel interference.

64. The computer program product of claim 62, wherein the computer readable medium further stores code for causing the at least one computer to receive a start time for the at least one trigger indication.

65. The computer program product of claim 62, wherein the computer readable medium further stores code for causing the at least one computer to transmit a CTS2S signal prior to measuring interference.

66. The computer program product of claim 65, wherein the computer readable medium further stores code for causing the at least one computer to transmit an RTS/CTS signal prior to measuring interference.