Multi-radio coexistence

• US 9,130,656 B2
• Filed: 05/23/2011
• Issued: 09/08/2015
• Est. Priority Date: 10/13/2010
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Linsky, Joel Benjamin
• Primary Examiner(s): GONZALES, APRIL GUZMAN
• Application Number:
  US13/113,531
• Publication Number:
  US 20120129457A1
• Time in Patent Office: 1,569 Days
• Field of Search: 455/63.3, 455/63.1, 455/78
• US Class Current: 1/1
• CPC Class Codes: H04B 1/525 with means for reducing leakage of transmitter signal into the receiver
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A method of wireless communication includes monitoring coexistence issues among supported radios in a User Equipment (UE). The method includes configuring a UE with first and second filter configurations. The first filter configuration covers a first frequency band, for example a portion of the ISM band. The first filter configuration may be wider than the second filter configuration, which excludes a portion of the first frequency band that is adjacent to a proximate second frequency band, for example LTE Band 7 or LTE Band 40. The UE selects between the first and second filter configurations based on the frequency of a first UE event. If the UE event is in a frequency in the adjacent portion excluded by the second filter configuration, the UE arbitrates depending on event priority. The second filter configuration may be chosen to reduce or minimize arbitration.

Claims

1. A method for wireless communications, comprising:

configuring a user equipment with a first filter configuration and a second filter configuration for use when communicating in a first frequency band, the first filter configuration having a frequency pass band covering different frequencies than a frequency pass band of the second filter configuration; and

selecting between the first filter configuration and second filter configuration to reduce interference with a second frequency band, the second frequency band being proximate to the first frequency band,

in which the first filter configuration and the second filter configuration are radio frequency (RF) filter configurations.

2. The method of claim 1 in which the first filter configuration and the second filter configuration include at least one tunable filter.

3. The method of claim 1 in which the first filter configuration and second filter configuration include a plurality of filters.

4. The method of claim 1 in which the frequency pass band of the second filter configuration excludes a portion of the first frequency band adjacent to the second frequency band.

5. The method of claim 1 in which the first filter configuration overlaps with at least one channel of the second filter configuration, the at least one channel being within the first frequency band.

6. The method of claim 1 in which the frequency pass band of the first filter configuration or the frequency pass band of the second filter configuration is chosen to reduce interference with the second frequency band.

7. The method of claim 1 in which the selecting is based on at least one of a relative priority of an event of a first radio access technology and a frequency of the event of the first radio access technology.

8. The method of claim 1 in which the selecting comprises arbitrating between a first radio access technology and a second radio access technology when a frequency of an event of the first radio access technology falls within the frequency pass band of the first filter configuration, but not the frequency pass band of the second filter configuration.

9. The method of claim 1 in which the selecting comprises engaging the second filter configuration when a frequency of an event of a first radio access technology falls within the frequency pass band of the second filter configuration.

10. The method of claim 1 in which the frequency pass band of the first filter configuration and the frequency pass band of the second filter configuration comprise at least the first frequency band.

11. An apparatus for wireless communications, comprising:

means for configuring a user equipment with a first filter configuration and a second filter configuration for use when communicating in a first frequency band, the first filter configuration having a frequency pass band covering different frequencies than a frequency pass band of the second filter configuration; and

means for selecting between the first filter configuration and second filter configuration to reduce interference with a second frequency band, the second frequency band being proximate to the first frequency band,

in which the first filter configuration and the second filter configuration are radio frequency (RF) filter configurations.

12. A computer program product for wireless communications, the computer program product comprising:

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

program code to configure a user equipment with a first filter configuration and a second filter configuration for use when communicating in a first frequency band, the first filter configuration having a frequency pass band covering different frequencies than a frequency pass band of the second filter configuration; and

program code to select between the first filter configuration and second filter configuration to reduce interference with a second frequency band, the second frequency band being proximate to the first frequency band,

in which the first filter configuration and the second filter configuration are radio frequency (RF) filter configurations.

13. An apparatus for wireless communications, comprising:

a memory; and

at least one processor coupled to the memory, the at least one processor being configured;

to configure a user equipment with a first filter configuration and a second filter configuration for use when communicating in a first frequency band, the first filter configuration having a frequency pass band covering different frequencies than a frequency pass band of the second filter configuration; and

to select between the first filter configuration and second filter configuration to reduce interference with a second frequency band, the second frequency band being proximate to the first frequency band,

in which the first filter configuration and the second filter configuration are radio frequency (RF) filter configurations.

14. The apparatus of claim 13 in which the first filter configuration and the second filter configuration include at least one tunable filter.

15. The apparatus of claim 13 in which the frequency pass band of the second filter configuration excludes a portion of the first frequency band adjacent to the second frequency band.

16. The apparatus of claim 13 in which the first filter configuration overlaps with at least one channel of the second filter configuration, the at least one channel being within the first frequency band.

17. The apparatus of claim 13 in which the frequency pass band of the first filter configuration or the frequency pass band of the second filter configuration is chosen to reduce interference with the second frequency band.

18. The apparatus of claim 13 in which the selecting is based on at least one of a relative priority of an event of a first radio access technology and a frequency of the event of the first radio access technology.

19. The apparatus of claim 13 in which the selecting comprises arbitrating between a first radio access technology and a second radio access technology when a frequency of an event of the first radio access technology falls within the frequency pass band of the first filter configuration, but not the frequency pass band of the second filter configuration.

20. The apparatus of claim 13 in which the selecting comprises engaging the second filter configuration when a frequency of an event of a first radio access technology falls within the frequency pass band of the second filter configuration.