Interference control in a wireless communication system

• US 8,879,425 B2
• Filed: 11/14/2012
• Issued: 11/04/2014
• Est. Priority Date: 03/15/2005
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Mese, Murat, Sutivong, Arak, Julian, David Jonathan, Ji, Tingfang
• Primary Examiner(s): Chou, Albert T
• Application Number:
  US13/677,032
• Publication Number:
  US 20130107740A1
• Time in Patent Office: 720 Days
• Field of Search: 370/335, 370/328, 455/453, 455/436
• US Class Current: 370/254
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0017 where the mode-switching is based on Quality of Service requirement
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 92/20 between access points

Abstract

A method for interference control includes receiving at a base station an interference report from a neighbor base station. The interference report indicates interference observed at the neighbor base station. The method also includes regulating, by the base station, data transmissions for terminals based on the interference report received from the neighbor base station. Regulating the data transmissions includes identifying disadvantaged terminals and assigning the disadvantaged terminals with lower data rates.

Claims

1. A method for interference control, comprising:

receiving at a base station an interference report from a neighbor base station, wherein the interference report indicates interference observed at the neighbor base station; and

regulating, by the base station, data transmissions for terminals based on the interference report received from the neighbor base station, wherein regulating the data transmissions comprises identifying disadvantaged terminals and assigning the disadvantaged terminals with lower data rates, and wherein identifying a particular terminal as a disadvantaged terminal comprises comparing estimated channel gain for the terminal against a channel gain threshold.

2. The method of claim 1, wherein the disadvantaged terminals are identified in the interference report.

3. The method of claim 1, further comprising lowering a high transmit power limit that is applicable to the disadvantaged terminals.

4. The method of claim 1, further comprising lowering a lower transmit power limit that is applicable to the disadvantaged terminals.

5. A base station that is configured for interference control, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory, the instructions being executable to;

receive an interference report from a neighbor base station, wherein the interference report indicates interference observed at the neighbor base station; and

regulate data transmissions for terminals based on the interference report received from the neighbor base station, wherein regulating the data transmissions comprises identifying disadvantaged terminals and assigning the disadvantaged terminals with lower data rates, and wherein identifying a particular terminal as a disadvantaged terminal comprises comparing estimated channel gain for the terminal against a channel gain threshold.

6. The base station of claim 5, wherein the disadvantaged terminals are identified in the interference report.

7. The base station of claim 5, wherein the instructions are also executable to lower a high transmit power limit that is applicable to the disadvantaged terminals.

8. The base station of claim 5, wherein the instructions are also executable to lower a lower transmit power limit that is applicable to the disadvantaged terminals.

9. A base station that is configured for interference control, comprising:

means for receiving an interference report from a neighbor base station, wherein the interference report indicates interference observed at the neighbor base station; and

means for regulating data transmissions for terminals based on the interference report received from the neighbor base station, wherein the means for regulating the data transmissions comprises means for identifying disadvantaged terminals and means for assigning the disadvantaged terminals with lower data rates, and wherein the means for identifying a particular terminal as a disadvantaged terminal comprises means for comparing estimated channel gain for the terminal against a channel gain threshold.

10. The base station of claim 9, wherein the disadvantaged terminals are identified in the interference report.

11. The base station of claim 9, further comprising means for lowering a high transmit power limit that is applicable to the disadvantaged terminals.

12. The base station of claim 9, further comprising means for lowering a lower transmit power limit that is applicable to the disadvantaged terminals.

13. A non-transitory processor-readable storage medium, comprising:

code for receiving at a base station an interference report from a neighbor base station, wherein the interference report indicates interference observed at the neighbor base station; and

code for regulating, by the base station, data transmissions for terminals based on the interference report received from the neighbor base station, wherein the code for regulating the data transmissions comprises code for identifying disadvantaged terminals and code for assigning the disadvantaged terminals with lower data rates, and wherein the code for identifying a particular terminal as a disadvantaged terminal comprises code for comparing estimated channel gain for the terminal against a channel gain threshold.

14. The non-transitory processor-readable storage medium of claim 13, wherein the disadvantaged terminals are identified in the interference report.

15. The non-transitory processor-readable storage medium of claim 13, further comprising code for lowering a high transmit power limit that is applicable to the disadvantaged terminals.

16. The non-transitory processor-readable storage medium of claim 13, further comprising code for lowering a lower transmit power limit that is applicable to the disadvantaged terminals.