CELL CANCELLATION LIST AND AN ADAPTIVE RADIO LINK FAILURE TRIGGER FOR IMPROVED SPECTRUM SHARING

• US 20130142116A1
• Filed: 11/29/2012
• Published: 06/06/2013
• Est. Priority Date: 12/01/2011
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Prakash, Rajat, Gaal, Peter
• Granted Patent: US 9,185,566 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

A cell cancellation method for improved spectrum sharing is provided. The cell cancellation method includes detecting interference from a cell. The method also includes cancelling a signal from the cell when a physical cell identifier corresponding to the cell is indicated in a cancellation list. An adaptive radio link failure (RLF) trigger method for improved spectrum sharing is disclosed. The RLF trigger method includes detecting interference from a cell. The RLF trigger method also includes adjusting a radio link failure trigger according to a cell identity of an interferer associated with the cell.

Claims

1. A method of wireless communication, comprising:

detecting interference from a cell; and

cancelling a signal from the cell when a physical cell identifier corresponding to the cell is indicated in a cancellation list.

2. The method of claim 1, in which:

the detecting includes detecting, by a user equipment, interference from a base station associated with the cell; and

the cancelling includes cancelling signals from the base station when the physical cell identifier from the cancellation list indicates that an operator of the base station is different from an operator of the user equipment.

3. The method of claim 1, further comprising:

receiving a blacklist as the cancellation list; and

in which the cancelling includes cancelling the signal from a base station associated with the cell when the physical cell identifier corresponding to the base station is identified from the blacklist.

4. The method of claim 1, in which the detecting is performed by a user equipment, and in which an operator of the cell corresponding to the physical cell identifier is different from an operator of the user equipment.

5. A method of wireless communication within a user equipment, comprising:

detecting interference from a cell; and

adjusting a radio link failure trigger according to a cell identity of an interferer associated with the cell.

6. The method of claim 5, in which the detecting includes detecting interference from a base station associated with the cell.

7. The method of claim 5, in which the adjusting includes expediting the radio link failure trigger when a physical cell identifier from a cancellation list indicates that an operator of a base station is different from an operator of the user equipment.

8. The method of claim 7, further comprising receiving a blacklist as the cancellation list.

9. The method of claim 5, in which the adjusting includes expediting the radio link failure trigger when the interferer is another radio access technology.

10. The method of claim 5, further comprising:

cancelling a signal corresponding to at least one physical cell identifier according to a cancellation list, in which an operator of the cell corresponding to the at least one physical cell identifier is different from an operator of the user equipment; and

in which the adjusting includes expediting the radio link failure trigger when interference from the cell is greater than a predetermined level.

11. The method of claim 5, further comprising selecting a value for a radio link failure timer according to the interferer.

12. The method of claim 5, in which the interferer includes one of:

a base station associated with an operator different from an operator of the user equipment; and

a radio access technology different from a radio access technology of the user equipment.

13. The method of claim 5, in which the adjusting includes expediting the radio link failure trigger according to a signal strength threshold.

14. An apparatus for wireless communication, comprising:

a memory; and

at least one processor coupled to the memory and configured;

to detect interference from a cell; and

to cancel a signal from the cell when a physical cell identifier corresponding to the cell is indicated in a cancellation list.

15. The apparatus of claim 14, in which the at least one processor is further configured:

to receive a blacklist as the cancellation list; and

in which the at least one processor is further configured to cancel the signal by cancelling the signal from a base station associated with the cell when the physical cell identifier corresponding to the base station is identified from the blacklist.

16. A computer program product configured for wireless communication, the computer program product comprising:

a non-transitory computer-readable medium having program code recorded thereon, the program code comprising;

program code to detect interference from a cell; and

program code to cancel a signal from the cell when a physical cell identifier corresponding to the cell is indicated in a cancellation list.

17. An apparatus operable for wireless communication, the apparatus comprising:

means for detecting interference from a cell; and

means for cancelling a signal from the cell when a physical cell identifier corresponding to the cell is indicated in a cancellation list.

18. An apparatus for wireless communication, comprising:

a memory; and

at least one processor coupled to the memory and configured;

to detect interference from a cell; and

to adjust a radio link failure trigger according to a cell identity of an interferer associated with the cell.

19. The apparatus of claim 18, in which the at least one processor is further configured to adjust the radio link failure trigger by expediting the radio link failure trigger when a physical cell identifier from a cancellation list indicates that an operator of a base station is different from an operator of the user equipment.

20. A computer program product configured for wireless communication, the computer program product comprising:

a non-transitory computer-readable medium having program code recorded thereon, the non-transitory program code comprising;

program code to detect interference from a cell; and

program code to adjust a radio link failure trigger according to a cell identity of an interferer associated with the cell.

21. An apparatus operable for wireless communication, the apparatus comprising:

means for detecting interference from a cell; and

means for adjusting a radio link failure trigger according to a cell identity of an interferer associated with the cell.