Method for setting positioning mode and mobile terminal

• US 10,539,677 B2
• Filed: 06/04/2015
• Issued: 01/21/2020
• Est. Priority Date: 06/04/2015
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Lu, Chenxi, Long, Shuiping
• Primary Examiner(s): Eng, George
• Assistant Examiner(s): Gao, Jing
• Application Number:
  US15/576,880
• Publication Number:
  US 20180149754A1
• Time in Patent Office: 1,692 Days
• CPC Class Codes: G01S 19/00 Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
• CPC Class Codes: G01S 19/48 by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
• CPC Class Codes: G01S 5/015 between indoor and outdoor environments

Abstract

A method includes: obtaining an azimuth and a signal parameter value of each preset satellite of M preset satellites when a mobile terminal is at a first location. The M preset satellites are sorted according to the values of their azimuths and N satellite combinations are obtained from those satellites that are consecutively arranged and have signal parameter values less than preset values. In response to determining that a ratio of the quantity of the preset satellites in the first satellite combination to M is less than a first threshold, the positioning mode of the mobile terminal is set to an outdoor positioning mode. In response to determining that a ratio of the quantity of the preset satellites in the first satellite combination to M is greater than a second threshold, the positioning mode is set to an indoor positioning mode.

Claims

1. A method for setting a positioning mode for a mobile terminal, comprising:

obtaining an azimuth and a signal parameter value of each preset satellite of M preset satellites when the mobile terminal is at a first location, wherein the each preset satellite has a corresponding preset value, and M is an integer greater than 1;

sorting the M preset satellites according to values of azimuths of the M preset satellites;

obtaining, from the M sorted preset satellites, N satellite combinations, wherein each of the N satellite combinations includes consecutively arranged sorted preset satellites, wherein each particular preset satellite in a satellite combination has a signal parameter value less than a corresponding preset value of the particular preset satellite, wherein N is an integer greater than or equal to 1, and wherein each satellite combination comprises at least one preset satellite;

determining a quantity of preset satellites in a first satellite combination of the N satellite combinations, wherein the first satellite combination is a satellite combination comprising a largest quantity of preset satellites of the N satellite combinations;

calculating a ratio of the quantity of the preset satellites in the first satellite combination to M; and

in response to determining that the ratio of the quantity of the preset satellites in the first satellite combination to M is less than a first threshold, setting the positioning mode to an outdoor positioning mode;

or

in response to determining that the ratio of the quantity of the preset satellites in the first satellite combination to M is greater than a second threshold, setting the positioning mode to an indoor positioning mode, wherein the first threshold is less than or equal to the second threshold;

wherein the mobile terminal sets the positioning mode to the outdoor positioning mode or the indoor positioning mode when the mobile terminal is at the first location and at a first moment, wherein the mobile terminal further moves to a second location at a second moment, and wherein the method further comprises;

in response to determining that at least one of a location interval between the second location and the first location is greater than a first preset distance and less than a second preset distance, or, a time interval between the second moment and the first moment is greater than a first preset time interval and less than a second preset time interval, obtaining the signal parameter values of the M preset satellites when the mobile terminal is at the second location and at the second moment, wherein the second preset distance is greater than the first preset distance, and wherein the second preset time interval is greater than the first preset time interval; and

setting a second positioning mode for the mobile terminal based on the signal parameter values of the M preset satellites when the mobile terminal is at the second location and at the second moment, and the azimuths of the M preset satellites when the mobile terminal is at the first location and at the first moment.

2. The method according to claim 1 wherein a preset value corresponding to a first preset satellite is greater than a preset value corresponding to a second preset satellite, the first preset satellite and the second preset satellite are two preset satellites of the M preset satellites, and an elevation angle of the first preset satellite is greater than an elevation angle of the second preset satellite.

3. The method according to claim 1, wherein when a quantity of first satellite combinations of the N satellite combinations is 1, the method further comprises:

obtaining an azimuth range of the first satellite combination according to azimuths of the preset satellites that are consecutively arranged in the first satellite combination; and

determining that a moving direction of the mobile terminal falls within the azimuth range.

4. The method according to claim 1, wherein the signal parameter value comprises one of a carrier-to-noise ratio of a satellite signal or a strength of the satellite signal.

5. The method according to claim 1, wherein the mobile terminal comprises multiple application programs.

6. A mobile terminal, comprising:

one or more hardware processors; and

a non-transitory computer-readable storage medium coupled to the one or more hardware processors and storing programming instructions for execution by the one or more hardware processors, wherein the programming instructions instruct the one or more hardware processors to;

obtain an azimuth and a signal parameter value of each preset satellite of M preset satellites when the mobile terminal is at a first location, wherein the each preset satellite has a corresponding preset value, and M is an integer greater than 1;

sort the M preset satellites according to values of azimuths of the M preset satellites;

obtain, from the M sorted preset satellites, N satellite combinations, wherein each of the N satellite combinations includes consecutively arranged sorted preset satellites, wherein each particular preset satellite in a satellite combination has a signal parameter value less than a corresponding preset value of the particular preset satellite, wherein N is an integer greater than or equal to 1, and wherein each satellite combination comprises at least one preset satellite;

determine a quantity of preset satellites in a first satellite combination of the N satellite combinations, wherein the first satellite combination is a satellite combination comprising a largest quantity of preset satellites of the N satellite combinations;

calculate a ratio of the quantity of the preset satellites in the first satellite combination to M; and

in response to determining that the ratio of the quantity of the preset satellites in the first satellite combination to M is less than a first threshold, setting the positioning mode to an outdoor positioning mode;

or

in response to determining that the ratio of the quantity of the preset satellites in the first satellite combination to M is greater than a second threshold, setting the positioning mode to an indoor positioning mode, wherein the first threshold is less than or equal to the second threshold;

wherein the mobile terminal sets the positioning mode to the outdoor positioning mode or the indoor positioning mode when the mobile terminal is at the first location and at a first moment, wherein the mobile terminal further moves to a second location at a second moment, and wherein the programming instructions further instruct the one or more hardware processors to;

in response to determining that at least one of a location interval between the second location and the first location is greater than a first preset distance and less than a second preset distance, or, a time interval between the second moment and the first moment is greater than a first preset time interval and less than a second preset time interval, obtain the signal parameter values of the M preset satellites when the mobile terminal is at the second location and at the second moment, wherein the second preset distance is greater than the first preset distance, and wherein the second preset time interval is greater than the first preset time interval; and

set a second positioning mode for the mobile terminal based on the signal parameter values of the M preset satellites when the mobile terminal is at the second location and at the second moment, and the azimuths of the M preset satellites when the mobile terminal is at the first location and at the first moment.

7. The mobile terminal according to claim 6, wherein a preset value corresponding to a first preset satellite is greater than a preset value corresponding to a second preset satellite, the first preset satellite and the second preset satellite are two preset satellites of the M preset satellites, and an elevation angle of the first preset satellite is greater than an elevation angle of the second preset satellite.

8. The mobile terminal according to claim 6, wherein when a quantity of first satellite combinations of the N satellite combinations is 1, wherein the programming instructions further instruct the one or more hardware processors to:

obtain an azimuth range of the first satellite combination according to azimuths of the preset satellites that are consecutively arranged in the first satellite combination; and

determine that a moving direction of the mobile terminal falls within the azimuth range.

9. The mobile terminal according to claim 6, wherein the signal parameter value comprises one of a carrier-to-noise ratio of a satellite signal or a strength of the satellite signal.

10. The mobile terminal according to claim 6, wherein the mobile terminal comprises multiple application programs.

11. A non-transitory computer readable storage medium storing computer instructions, when executed by one or more hardware processors of a mobile terminal, cause the one or more hardware processors to perform operations comprising:

obtaining an azimuth and a signal parameter value of each preset satellite of M preset satellites when the mobile terminal is at a first location, wherein each preset satellite has a corresponding preset value, and M is an integer greater than 1;

sorting the M preset satellites according to values of azimuths of the M preset satellites;

obtaining, from the M sorted preset satellites, N satellite combinations, wherein each of the N satellite combinations includes consecutively arranged sorted preset satellites, wherein each particular preset satellite in a satellite combination has a signal parameter value less than a corresponding preset value of the particular preset satellite, wherein N is an integer greater than or equal to 1, and wherein each satellite combination comprises at least one preset satellite;

determining a quantity of preset satellites in a first satellite combination of the N satellite combinations, wherein the first satellite combination is a satellite combination comprising a largest quantity of preset satellites of the N satellite combinations;

calculating a ratio of the quantity of the preset satellites in the first satellite combination to M; and

in response to determining that the ratio of the quantity of the preset satellites in the first satellite combination to M is less than a first threshold, setting the positioning mode to an outdoor positioning mode;

or

in response to determining that the ratio of the quantity of the preset satellites in the first satellite combination to M is greater than a second threshold, setting the positioning mode to an indoor positioning mode, wherein the first threshold is less than or equal to the second threshold;

wherein the mobile terminal sets the positioning mode to the outdoor positioning mode or the indoor positioning mode when the mobile terminal is at the first location and at a first moment, wherein the mobile terminal further moves to a second location at a second moment, and wherein the operations further comprise;

in response to determining that at least one of a location interval between the second location and the first location is greater than a first preset distance and less than a second preset distance, or, a time interval between the second moment and the first moment is greater than a first preset time interval and less than a second preset time interval, obtaining the signal parameter values of the M preset satellites when the mobile terminal is at the second location and at the second moment, wherein the second preset distance is greater than the first preset distance, and wherein the second preset time interval is greater than the first preset time interval; and

setting a second positioning mode for the mobile terminal based on the signal parameter values of the M preset satellites when the mobile terminal is at the second location and at the second moment, and the azimuths of the M preset satellites when the mobile terminal is at the first location and at the first moment.

12. The non-transitory computer readable storage medium according to claim 11, wherein a preset value corresponding to a first preset satellite is greater than a preset value corresponding to a second preset satellite, the first preset satellite and the second preset satellite are two preset satellites of the M preset satellites, and an elevation angle of the first preset satellite is greater than an elevation angle of the second preset satellite.

13. The non-transitory computer readable storage medium according to claim 11, wherein when a quantity of first satellite combinations of the N satellite combinations is 1, wherein the operations further comprise:

obtaining an azimuth range of the first satellite combination according to azimuths of the preset satellites that are consecutively arranged in the first satellite combination; and

determining that a moving direction of the mobile terminal falls within the azimuth range.

14. The non-transitory computer readable storage medium according to claim 11, wherein the signal parameter value comprises one of a carrier-to-noise ratio of a satellite signal or a strength of the satellite signal.

15. The non-transitory computer readable storage medium according to claim 11, wherein the mobile terminal comprises multiple application programs.