Wireless communication channel blanking

Patent metadata

Field	Value
Publication number	US-9326253-B2
Application number	US-16383508-A
Country	US
Kind code	B2
Filing date	Jun 27, 2008
Priority date	Nov 15, 2007
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

Systems and methodologies are described that facilitate blanking on portions of bandwidth utilized by communicating devices that are dominantly interfered by a disparate device in wireless communications networks. The portions of bandwidth can relate to critical data, such as control data, and one or more of the communicating devices can request that the dominantly interfering device blank on one or more of the portions. The communicating devices can subsequently transmit data over the blanked portions free of the dominant interference. Additionally, the dominantly interfering device can request reciprocal blanking from the one or more communicating devices.

First claim

What is claimed is:

1. A method for mitigating dominant interference in wireless network communications, comprising:
determining dominant interference on one or more control channels utilized by a plurality of communicating devices;
selecting a portion of the one or more control channels on which to blank to diminish the interference; and
blanking at least a portion of power on the selected portion of the one or more control channels.

2. The method of claim 1 , further comprising receiving an indication of a level of interference, the portion of power blanked is related to the level of interference.

3. The method of claim 1 , further comprising receiving an indication of interference caused on the one or more control channels utilized by the plurality of communicating devices.

4. The method of claim 3 , further comprising transmitting information regarding portions of bandwidth interfered by at least one of the communicating devices to the communicating device to request blanking thereof by the communicating device.

5. The method of claim 3 , further comprising receiving a preamble from at least one of the communicating devices, the indication of interference is received from an inference related to estimating a path loss of the device based at least in part on the preamble.

6. The method of claim 3 , the indication of interference is received from one or more of the plurality of communicating devices.

7. The method of claim 1 , further comprising receiving information regarding a subset of the one or more control channels on which blanking is desired from at least one of the communicating devices.

8. The method of claim 1 , further comprising transmitting at a higher power on disparate portions of bandwidth to compensate for the blanking.

9. The method of claim 1 , wherein the blanking step is performed by a base station.

10. A wireless communications apparatus, comprising:
at least one processor configured to blank on one or more control channels of a disparate communication link in a multiple access wireless network to mitigate dominant interference according to information received regarding the dominant interference on the one or more control channels utilized by a plurality of communicating devices, the dominant interference being determined by at least one communications device; and
a memory coupled to the at least one processor.

11. The wireless communications apparatus of claim 10 , the at least one processor further configured to determine a blanking factor by which to blank on the one or more control channels.

12. The wireless communications apparatus of claim 11 , the at least one processor further configured to estimate a path loss based at least in part on a preamble received from an interfered device, the blank factor is determined based at least in part on the estimated path loss.

13. The wireless communications apparatus of claim 10 , the information is received from a dominantly interfered device of the disparate communication requesting the blanking.

14. The wireless communications apparatus of claim 13 , the at least one processor further configured to reciprocally request channel blanking from the dominantly interfered device.

15. The wireless communications apparatus of claim 10 , the blanking performed over a subset of the control channels of the disparate communication in a set of frames, each frame comprising a plurality of OFDM symbols.

16. The wireless communications apparatus of claim 10 , the at least one processor further configured to transmit with greater power on unblanked channels to compensate for loss occurring due to the channel blanking.

17. The wireless communications apparatus of claim 10 , wherein the wireless communications apparatus is integrated with a base station.

18. A wireless communications apparatus that blanks on control channels to mitigate interference thereon, comprising:
means for determining dominant interference on one or more control channels of the wireless communications apparatus for a disparate communication between disparate devices;
means for determining which ones of the one or more control channels on which to blank to improve quality of the disparate communication; and
means for blanking on the one or more control channels.

19. The wireless communications apparatus of claim 18 , further comprising means for determining a level of interference of the wireless communications apparatus, the level is utilized by the means for blanking.

20. The wireless communications apparatus of claim 18 , the control channels on which to blank are determined based at least in part on information received from at least one of the disparate devices.

21. The wireless communications apparatus of claim 18 , the control channels repeat over one or more contiguous frames of bandwidth.

22. The wireless communications apparatus of claim 21 , the blanking is performed over a subset of the one or more contiguous frames of bandwidth.

23. The wireless communications apparatus of claim 18 , further comprising means for requesting reciprocal blanking from at least one of the disparate devices.

24. The wireless communications apparatus of claim 18 , wherein the wireless communications apparatus is integrated with a base station.

25. A non-transitory computer program product, comprising:
a computer-readable medium comprising:
code for causing at least one computer to determine dominant interference on one or more control channels utilized by a plurality of communicating devices;
code for causing the at least one computer to select a portion of the one or more control channels on which to blank to diminish the interference; and
code for causing the at least one computer to blank at least a portion of power on the selected portion of the one or more control channels.

26. The computer program product of claim 25 , further comprising code for causing the at least one computer to receive an indication of a level of interference, the portion of power blanked is related to the level of interference.

27. The computer program product of claim 25 , wherein the computer program product is integrated with a base station.

28. A wireless communication apparatus, comprising:
a processor configured to:
determine dominant interference of the wireless communications apparatus on one or more control channels for a disparate communication between disparate devices;
determine which ones of the one or more control channels on which to blank to improve quality of the disparate communication; and
blank on the one or more control channels; and

a memory coupled to the processor.

29. The wireless communication apparatus of claim 28 , wherein the wireless communication apparatus is integrated with a base station.

30. A method for requesting blanking over control channels in a wireless communications network, comprising:
detecting dominant interference over communication with a device by a dominant interferer on one or more control channels, the dominant interference being determined by at least one communications device;
requesting blanking on a subset of the one or more control channels from the dominant interferer; and
transmitting control data to the device on the subset of the one or more control channels.

31. The method of claim 30 , further comprising receiving an i

Assignees

• Bhushan Naga
• Khandekar Aamod
• Palanki Ravi
• Qualcomm Inc

Inventors

• Bhushan Naga
• Khandekar Aamod
• Palanki Ravi

Classifications

• H04W52/325

  Power control of control or pilot channels · CPC title

• H04W52/44

  in connection with interruption of transmission · CPC title

• H04W52/38

  TPC being performed in particular situations · CPC title

• H04W52/243 Primary

  taking into account interferences · CPC title