Dynamic gnss channel control

Patent metadata

Field	Value
Publication number	US-2025389850-A1
Application number	US-202418753647-A
Country	US
Kind code	A1
Filing date	Jun 25, 2024
Priority date	Jun 25, 2024
Publication date	Dec 25, 2025
Grant date	—

Abstract

A method of controlling a satellite positioning system receiver of a mobile device includes: determining, at the mobile device, candidate satellite vehicle positioning signals corresponding to satellite vehicles above a horizon relative to the mobile device; determining, based on at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals, a subset of satellite vehicle positioning signals consisting of fewer than all of the candidate satellite vehicle positioning signals; and causing each satellite signal channel in at least a subset of a plurality of satellite signal channels of the satellite positioning system receiver to measure a corresponding satellite vehicle positioning signal of the subset of satellite vehicle positioning signals.

First claim

1 . A method of controlling a satellite positioning system receiver of a mobile device, the method comprising:
determining, at the mobile device, candidate satellite vehicle positioning signals corresponding to satellite vehicles above a horizon relative to the mobile device; determining, based on at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals, a subset of satellite vehicle positioning signals consisting of fewer than all of the candidate satellite vehicle positioning signals; and causing each satellite signal channel in at least a subset of a plurality of satellite signal channels of the satellite positioning system receiver to measure a corresponding satellite vehicle positioning signal of the subset of satellite vehicle positioning signals.

2 . The method of claim 1 , further comprising ranking satellite vehicle positioning signals of the subset of satellite vehicle positioning signals based on the at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals.

3 . The method of claim 2 , wherein the at least a subset of the plurality of satellite signal channels comprises N satellite signal channels and wherein causing each satellite signal channel in the at least a subset of the plurality of satellite signal channels to measure a corresponding satellite vehicle positioning signal comprises causing each satellite signal channel in the at least a subset of the plurality of satellite signal channels to measure one of N highest-ranked satellite vehicle positioning signals of the subset of satellite vehicle positioning signals.

4 . The method of claim 1 , wherein a set comprising the at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals comprises at least one measure of signal strength of a respective at least one satellite vehicle positioning signal of the subset of satellite vehicle positioning signals.

5 . The method of claim 1 , wherein a set comprising the at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals comprises at least one indication of satellite vehicle elevation relative to the mobile device of a respective at least one of the satellite vehicles of the subset of satellite vehicle positioning signals.

6 . The method of claim 1 , wherein the at least one respective satellite vehicle signal parameter for a first one of the candidate satellite vehicle positioning signals is different from the at least one respective satellite vehicle signal parameter for a second one of the candidate satellite vehicle positioning signals.

7 . The method of claim 1 , wherein a set comprising the at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals comprises at least one first parameter, based on a first coarse granularity measurement made of one of the candidate satellite vehicle positioning signals less than a threshold amount of time before a present time, and at least one second parameter comprising a satellite vehicle elevation relative to the mobile device or a second coarse granularity measurement made of one of the candidate satellite vehicle positioning signals more than the threshold amount of time before the present time.

8 . A mobile device comprising:
at least one memory; a satellite positioning system receiver comprising a plurality of satellite signal channels each comprising a combination of components to receive and measure a satellite vehicle positioning signal; at least one controller, communicatively coupled to the at least one memory and the satellite positioning system receiver, configured to:
determine candidate satellite vehicle positioning signals corresponding to satellite vehicles above a horizon relative to the mobile device;
determine, based on at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals, a subset of satellite vehicle positioning signals consisting of fewer than all of the candidate satellite vehicle positioning signals; and
cause each satellite signal channel in at least a subset of the plurality of satellite signal channels to measure a corresponding satellite vehicle positioning signal of the subset of satellite vehicle positioning signals.

9 . The mobile device of claim 8 , wherein the at least one controller is further configured to rank satellite vehicle positioning signals of the subset of satellite vehicle positioning signals based on the at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals.

10 . The mobile device of claim 9 , wherein the at least a subset of the plurality of satellite signal channels comprises N satellite signal channels and wherein the at least one controller is further configured to cause each satellite signal channel in the at least a subset of the plurality of satellite signal channels to measure one of N highest-ranked satellite vehicle positioning signals of the subset of satellite vehicle positioning signals.

11 . The mobile device of claim 8 , wherein a set comprising the at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals comprises at least one measure of signal strength of a respective at least one satellite vehicle positioning signal of the subset of satellite vehicle positioning signals.

12 . The mobile device of claim 8 , wherein a set comprising the at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals comprises at least one indication of satellite vehicle elevation relative to the mobile device of a respective at least one of the satellite vehicles of the subset of satellite vehicle positioning signals.

13 . The mobile device of claim 8 , wherein the at least one respective satellite vehicle signal parameter for a first one of the candidate satellite vehicle positioning signals is different from the at least one respective satellite vehicle signal parameter for a second one of the candidate satellite vehicle positioning signals.

14 . The mobile device of claim 8 , wherein a set comprising the at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals comprises at least one first parameter, based on a first coarse granularity measurement made of one of the candidate satellite vehicle positioning signals less than a threshold amount of time before a present time, and at least one second parameter comprising a satellite vehicle elevation relative to the mobile device or a second coarse granularity measurement made of one of the candidate satellite vehicle positioning signals more than the threshold amount of time before the present time.

15 . A mobile device comprising:
a satellite positioning system receiver comprising a plurality of satellite signal channels each comprising a combination of components to receive and measure a satellite vehicle positioning signal; means for determining candidate satellite vehicle positioning signals corresponding to satellite vehicles above a horizon relative to the mobile device; means for determining, based on at least one respective satellite vehicle signal parameter for each of the candidate satellite vehicle positioning signals, a subset of satellite vehicle positioning signals consisting of fewer than all of the candidate sate

Assignees

• Qualcomm Inc

Inventors

• Lee Dong Kyeong
• Jee Songwon
• Morrison William
• Shah Himanshu
• Zheng Bo
• Liang Hsiao Chien

Classifications

• G01S19/28 Primary

  Satellite selection · CPC title

• G01S19/425

  by combining or switching between signals derived from different satellite radio beacon positioning systems · CPC title

• G01S19/22

  Multipath-related issues · CPC title