Adaptive scanning with multi-radio device

• US 10,098,016 B2
• Filed: 01/22/2015
• Issued: 10/09/2018
• Est. Priority Date: 01/22/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Wang, Jibing
• Primary Examiner(s): Cho, Un C
• Assistant Examiner(s): Costin, Jeremy M
• Application Number:
  US14/603,234
• Publication Number:
  US 20160219440A1
• Time in Patent Office: 1,356 Days
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area 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

Methods, systems, and devices are described for adaptive scanning with a multi-radio device. A mobile device may monitor the signal quality of an established communication associated with a first radio (e.g., Long Term Evolution (LTE) radio) to dynamically adapt the measurement activity (e.g., scanning periodicity) of a second radio (e.g., wireless local area network (WLAN) radio) to minimize data transmission interruption.

Claims

1. A method of wireless communication at a mobile device, comprising:

determining a signal quality for at least one channel for a first radio utilizing a first radio access technology (RAT) and operating within an unlicensed spectrum;

comparing the signal quality for the first radio with a threshold;

performing a plurality of first scans according to a first scan periodicity using a second radio utilizing a second RAT and operating within the unlicensed spectrum, wherein performing the plurality of first scans according to the first scan periodicity periodically interrupts a connection of the first radio according to the first scan periodicity;

adapting a scan periodicity of the second radio from the first scan periodicity to a second scan periodicity based at least in part on the comparison; and

performing a plurality of second scans according to the second scan periodicity using the second radio and based at least in part on the adapting, wherein performing the plurality of second scans according to the second scan periodicity periodically interrupts the connection of the first radio according to the second scan periodicity.

2. The method of claim 1, wherein adapting the scan periodicity of the second radio comprises:

increasing the scan periodicity of the second radio when the signal quality for the first radio is greater than the threshold.

3. The method of claim 1, wherein adapting the scan periodicity of the second radio comprises:

decreasing the scan periodicity of the second radio when the signal quality for the first radio is less than or equal to the threshold.

4. The method of claim 1, further comprising:

interrupting the connection of the first radio based at least in part on the signal quality for the first radio; and

increasing the scan periodicity of the second radio upon interrupting the connection of the first radio.

5. The method of claim 1, further comprising:

transmitting a false channel quality report for the second radio based at least in part on the signal quality for the first radio;

receiving a message from a base station in response to the false channel quality report; and

decreasing the scan periodicity of the second radio based at least in part on the received message.

6. The method of claim 5, further comprising:

receiving a configuration indicating the first scan periodicity from the base station, wherein the plurality of first scans are performed according to the configuration, and wherein transmitting the false channel quality report is based at least in part on receiving the configuration.

7. The method of claim 1, wherein adapting the scan periodicity comprises:

adapting the scan periodicity based at least in part on power usage, history of signal quality, proximity of base station, or any combination thereof.

8. The method of claim 1, wherein the first RAT comprises a Long Term Evolution (LTE) RAT and the second RAT comprises a wireless local area network (WLAN) RAT.

9. The method of claim 1, wherein the first RAT comprises a WLAN RAT and the second RAT comprises an LTE RAT.

10. The method of claim 1, wherein the unlicensed spectrum comprises an Unlicensed Nation Information Infrastructure (U-NII) band.

11. An apparatus for wireless communication at a mobile device, comprising:

a processor;

memory in electronic communication with the processor;

a signal quality detector to determine, using the processor and instructions stored in the memory, a signal quality for at least one channel for a first radio utilizing a first radio access technology (RAT) and operating within an unlicensed spectrum;

a signal quality comparator to compare, using the processor and the instructions stored in the memory, the signal quality for the first radio with a threshold; and

an adaptive scanner to;

perform a plurality of first scans according to a first scan periodicity using a second radio utilizing a second RAT and operating within the unlicensed spectrum, wherein performing the plurality of first scans according to the first scan periodicity periodically interrupts a connection of the first radio according to the first scan periodicity;

adapt a scan periodicity of the second radio from the first scan periodicity to a second scan periodicity based at least in part on the comparison; and

perform a plurality of second scans according to the second scan periodicity using the second radio and based at least in part on the adaptation, wherein performing the plurality of second scans according to the second scan periodicity periodically interrupts the connection of the first radio according to the second scan periodicity.

12. The apparatus of claim 11, further comprising:

a periodicity incrementer to increase, using the processor and the instructions stored in the memory, the scan periodicity of the second radio when the signal quality for the first radio is greater than the threshold.

13. The apparatus of claim 11, further comprising:

a periodicity decrementer to decrease, using the processor and the instructions stored in the memory, the scan periodicity of the second radio when the signal quality for the first radio is less than or equal to the threshold.

14. The apparatus of claim 11, further comprising:

an interrupter to interrupt, using the processor and the instructions stored in the memory, the connection of the first radio based at least in part on the signal quality for the first radio; and

a periodicity incrementer to increase, using the processor and the instructions stored in the memory, the scan periodicity of the second radio upon interrupting the connection of the first radio.

15. The apparatus of claim 11, further comprising:

a channel quality reporter to transmit, using the processor and the instructions stored in the memory, a false channel quality report for the second radio based at least in part on the signal quality for the first radio;

a receiver to receive, using the processor and the instructions stored in the memory, a message from a base station in response to the false channel quality report; and

a periodicity decrementer to decrease, using the processor and the instructions stored in the memory, the scan periodicity of the second radio based at least in part on the received message.

16. The apparatus of claim 11, wherein the adaptive scanner is configured to:

adapt the scan periodicity based at least in part on power usage, history of signal quality, proximity of base station, or any combination thereof.

17. An apparatus for wireless communication at a mobile device, comprising:

means for determining a signal quality for at least one channel for a first radio utilizing a first radio access technology (RAT) and operating within an unlicensed spectrum;

means for comparing the signal quality for the first radio with a threshold;

means for performing a plurality of first scans according to a first scan periodicity using a second radio utilizing a second RAT and operating within the unlicensed spectrum, wherein performing the plurality of first scans according to the first scan periodicity periodically interrupts a connection of the first radio according to the first scan periodicity;

means for adapting a scan periodicity of the second radio from the first scan periodicity to a second scan periodicity based at least in part on the comparison; and

means for performing a plurality of second scans according to the second scan periodicity using the second radio and based at least in part on the adapting, wherein performing the plurality of second scans according to the second scan periodicity periodically interrupts the connection of the first radio according to the second scan periodicity.

18. The apparatus of claim 17, wherein the means for adapting the scan periodicity of the second radio comprises:

means for increasing the scan periodicity of the second radio when the signal quality for the first radio is greater than the threshold.

19. The apparatus of claim 17, wherein the means for adapting the scan periodicity of the second radio comprises:

means for decreasing the scan periodicity of the second radio when the signal quality for the first radio is less than or equal to the threshold.

20. The apparatus of claim 17, further comprising:

means for interrupting the connection of the first radio based at least in part on the determined signal quality for the first radio; and

means for increasing the scan periodicity of the second radio upon interrupting the connection of the first radio.

21. The apparatus of claim 17, further comprising:

means for transmitting a false channel quality report for the second radio based at least in part on the determined signal quality for the first radio;

means for receiving a message from a base station in response to the false channel quality report; and

means for decreasing the scan periodicity of the second radio based at least in part on the received message.

22. The apparatus of claim 17, wherein the means for adapting the scan periodicity comprises:

means for adapting the scan periodicity based at least in part on power usage, history of signal quality, proximity of base station, or combination thereof.

23. The apparatus of claim 17, wherein the first RAT comprises a Long Term Evolution (LTE) RAT and the second RAT comprises a wireless local area network (WLAN) RAT.

24. The apparatus of claim 17, wherein the first RAT comprises a WLAN RAT and the second RAT comprises an LTE RAT.

25. The apparatus of claim 17, wherein the unlicensed spectrum comprises an Unlicensed Nation Information Infrastructure (U-NII) band.

26. A non-transitory computer-readable medium storing code for wireless communication at a mobile device, the code comprising instructions, when implemented by a processor, executable to:

determine a signal quality for at least one channel for a first radio utilizing a first radio access technology (RAT) and operating within an unlicensed spectrum;

compare the determined signal quality for the first radio with a threshold;

perform a plurality of first scans according to a first scan periodicity using a second radio utilizing a second RAT and operating within the unlicensed spectrum, wherein the plurality of first scans according to the first scan periodicity periodically interrupts a connection of the first radio according to the first scan periodicity;

adapt a scan periodicity of the second radio from the first scan periodicity to a second scan periodicity based at least in part on the comparison; and

perform a plurality of second scans according to the second scan periodicity using the second radio and based at least in part on the adaptation, wherein performing the plurality of second scans according to the second scan periodicity periodically interrupts the connection of the first radio according to the second scan periodicity.