ADAPTIVE WAKE-UP SCHEDULING UNDER PRS MUTING

• US 20180317196A1
• Filed: 04/28/2017
• Published: 11/01/2018
• Est. Priority Date: 04/28/2017
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Do, Ju-Yong, Opshaug, Guttorm
• Application Number:
  US15/581,111
• Publication Number:
  US 20180317196A1
• Time in Patent Office: Days
• CPC Class Codes: G01S 1/045 Receivers
• CPC Class Codes: G01S 1/20 using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

Systems, methods, apparatuses, and computer-readable media for adaptive wake-up scheduling under PRS muting are disclosed. For example, A mobile device can measure a plurality of reference signals for positioning having a muting pattern cycle comprising two or more time periods. The mobile device, during an evaluation phase, can receive during one or more evaluation time periods within the muting pattern cycle, reference signals detectable by the mobile device during the one or more evaluation time periods within the muting pattern cycle. The mobile device can determine a subset of the muting pattern cycle for measuring reference signals, where the subset of the muting pattern cycle comprises a number of time periods fewer than the two or more time periods of the muting pattern cycle. The mobile device then measures reference signals only during the determined subset of the muting pattern cycle.

Claims

1. A method for measuring, by a mobile device, a plurality of reference signals for positioning having a muting pattern cycle comprising two or more time periods, the method comprising:

receiving, by the mobile device, during one or more evaluation time periods within a muting pattern cycle, reference signals detectable by the mobile device during the one or more evaluation time periods within the muting pattern cycle;

determining a subset of the muting pattern cycle for measuring reference signals, wherein the subset of the muting pattern cycle comprises a number of time periods fewer than the two or more time periods of the muting pattern cycle; and

measuring, by the mobile device, reference signals only during the determined subset of the muting pattern cycle.

2. The method of claim 1, further comprising, determining a location of the mobile device based on the reference signals measured during the determined subset of the muting pattern cycle.

3. The method of claim 1, further comprising:

transmitting one or more of the references signals measured during the determined subset of the muting pattern cycle to a remote device, the remote device configured to determine a location of the mobile device based on the reference signals measured during the determined subset of the muting pattern cycle; and

receiving the location of the mobile device.

4. The method of claim 1, wherein the determining the subset of the muting pattern cycle for measuring reference signals comprises determining the subset based on a quality of the measured reference signals, a geographic diversity of candidate reference signal sources, a power consumption target, a location accuracy target, or any combination thereof.

5. The method of claim 4, wherein the determined subset of the muting pattern cycle is based on a power consumption target or a location accuracy target, the method further comprising:

receiving the power consumption target or the location accuracy target for the location measurement; and

determining the number of time periods for the subset of the muting pattern cycle based on the power consumption target or location accuracy target, wherein determining the subset of the muting pattern cycle is based, at least in part, on the number.

6. The method of claim 5, wherein the determined subset of the muting pattern cycle is based on a priority of the time periods of the muting pattern cycle.

7. The method of claim 1, further comprising:

determining a no-signal-detected subset of the muting pattern cycle having no detectable reference signal; and

reducing a priority of time periods in the no-signal detected subset of the muting pattern cycle.

8. A device for measuring a plurality of reference signals for positioning having a muting pattern cycle comprising two or more timeslots comprising:

a non-transitory computer-readable medium storing processor-executable instructions;

a processor in communication with the non-transitory computer-readable medium, the processor configured to execute the processor-executable program code to;

receive, by a mobile device, during one or more evaluation time periods within a muting pattern cycle having two or more time periods, reference signals detectable by the mobile device during the one or more evaluation time periods within the muting pattern cycle;

determine a subset of the muting pattern cycle for measuring reference signals, wherein the subset of the muting pattern cycle comprises a number of time periods fewer than the two or more time periods of the muting pattern cycle; and

measuring, by the mobile device, reference signals only during the determined subset of the muting cycle.

9. The device of claim 8, wherein processor-executable program code is further configured to cause the processor to:

transmit one or more of the reference signals measured during the determined subset of the muting pattern cycle to a remote device, the remote device configured to determine a location of the mobile device based on the reference signals measured during the determined subset of the muting pattern cycle; and

receive the location of the mobile device.

10. The device of claim 8, wherein the processor-executable program code is further configured to cause the processor to determine the subset based on a quality of the measured reference signals, a geographic diversity of candidate reference signal sources, a power consumption target, a location accuracy target, or any combination thereof.

11. The device of claim 10, wherein the determined subset of the muting pattern cycle is based on a power consumption target or a location accuracy target for a location measurement, and wherein the processor-executable program code is further configured to cause the processor to:

receive the power consumption target or the location accuracy target for the location measurement; and

determine the number of time periods for the subset of the muting pattern cycle based on the power consumption target or location accuracy target, wherein determining the subset of the muting pattern cycle is based, at least in part, on the number.

12. The device of claim 10, wherein the determined subset of the muting pattern cycle is based on a priority of the time periods of the muting pattern cycle.

13. The device of claim 8, wherein processor-executable program code is further configured to cause the processor to:

determine a no-signal-detected subset of the muting pattern cycle having no detectable reference signal; and

reduce a priority of time periods in the no-signal-detected subset of the muting pattern cycle.

14. A non-transitory computer-readable medium storing processor-executable instructions configured to cause a processor to:

receive, by a mobile device, during one or more time evaluation periods within a muting pattern cycle having two or more time periods, reference signals detectable by the mobile device during the one or more time evaluation periods within the muting pattern cycle;

determine a subset of the muting pattern cycle for measuring reference signals, wherein the subset of the muting pattern cycle comprises a number of time periods fewer than the two or more time periods of the muting pattern cycle; and

measure, by the mobile device, reference signals only during the determined subset of the muting pattern cycle.

15. The non-transitory computer-readable medium of claim 14, wherein processor-executable program code is further configured to:

transmit one or more of the reference signals measured during the determined subset of the muting pattern cycle to a remote device, the remote device configured to determine a location of the mobile device based on the reference signals measured during the determined subset of the muting pattern cycle; and

receive the location of the mobile device.

16. The non-transitory computer-readable medium of claim 14, wherein the processor-executable program code is further configured to cause the processor to determine the subset based on a quality of the measured reference signals, a geographic diversity of candidate reference signal sources, a power consumption target, a location accuracy target, or any combination thereof

17. The non-transitory computer-readable medium of claim 16, wherein the determined subset of the muting pattern cycle is based on a power consumption target or a location accuracy target for a location measurement, and wherein processor-executable program code is further configured to cause the processor to:

receive the power consumption target or the location accuracy target; and

determine the number of time periods for the subset of the muting pattern cycle based on the power consumption target or location accuracy target, wherein determining the subset of the muting pattern cycle is based, at least in part, on the number.

18. The non-transitory computer-readable medium of claim 17, wherein the determined subset of the muting pattern cycle is based on a priority of the time periods of the muting pattern cycle.

19. The non-transitory computer-readable medium of claim 14, wherein processor-executable program code is further configured to cause the processor to:

determine a no-signal-detected subset of the muting pattern cycle having no detectable reference signal; and

reduce a priority of time periods in the no-signal-detected subset of the muting pattern cycle.

20. An apparatus for measuring a plurality of reference signals for positioning having a muting pattern cycle comprising two or more timeslots, the apparatus comprising:

means for receiving, during one or more evaluation time periods within a muting pattern cycle, reference signals detectable by the mobile device during the one or more evaluation time periods of the set of time periods within the muting pattern cycle;

means for determining a subset of the muting pattern cycle for measuring reference signals, wherein the subset of the muting pattern cycle comprises a number of time periods fewer than the two or more time periods of the muting pattern cycle; and

means for measuring reference signals only during the determined subset of the muting pattern cycle.

21. The apparatus of claim 20, further comprising:

means for transmitting one or more of the references signals measured during the determined subset of the muting pattern cycle to a remote device, the remote device configured to determine a location of the mobile device based on the reference signals measured during the determined subset of the muting pattern cycle; and

means for receiving the location of the mobile device.

22. The apparatus of claim 20, further comprising means for determining the subset based on a quality of the measured reference signals, a geographic diversity of candidate reference signal sources, a power consumption target, a location accuracy target, or any combination thereof.

23. The apparatus of claim 22, wherein the determined subset of the muting pattern cycle is based on a power consumption target or a location accuracy target for a location measurement, and further comprising:

means for receiving the power consumption target or the location accuracy target for a location measurement; and

means for determining the number of time periods for the subset of the muting pattern cycle based on the power consumption target or location accuracy target, wherein determining the subset of the muting pattern cycle is based, at least in part, on the number.

24. The apparatus of claim 23, wherein the determined subset of the muting pattern cycle is based on a priority of the time periods of the muting pattern cycle.

25. The apparatus of claim 20, further comprising:

means for determining a no-signal-detected subset of the muting pattern cycle having no detectable reference signal; and

means for reducing a priority of time periods in the no-signal-detected subset of the muting pattern cycle.