Low-power-consumption positioning method and related apparatus

Patent metadata

Field	Value
Publication number	US-12560726-B2
Application number	US-202118042086-A
Country	US
Kind code	B2
Filing date	Aug 17, 2021
Priority date	Aug 21, 2020
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

A low-power-consumption positioning method includes an electronic device sending first setting information to a server, where the first setting information is used to indicate the server to broadcast positioning assistance data to the electronic device at a first time interval (for example, 1 second). The electronic device resolves high-precision positioning information based on the positioning assistance data. When the electronic device meets a first preset condition, the electronic device may send second setting information to the server. The second setting information instructs the server to broadcast the positioning assistance data to the electronic device at a second time interval (for example, 60 seconds). The first time interval is shorter than the second time interval.

First claim

What is claimed is:

1 . A method, comprising:
receiving, by an electronic device, a first input; sending, by the electronic device, first setting information to a server in response to the first input, wherein the first setting information sets a time interval at which the server broadcasts positioning assistance data as a first time interval; sending, by the electronic device, first global navigation satellite system (GNSS) location information to the server; receiving, by the electronic device via broadcast, first positioning assistance data from the server at the first time interval, wherein the first positioning assistance data are based on the first GNSS location information and first measurement data from N reference stations, and wherein N is a positive integer; resolving, by the electronic device, first high-precision positioning information based on the first GNSS location information and the first positioning assistance data; sending, by the electronic device when the electronic device meets a first preset condition, second setting information to the server, wherein the second setting information sets a time interval at which the server broadcasts second positioning assistance data as a second time interval, and wherein the second time interval is longer than the first time interval; sending, by the electronic device, second GNSS location information to the server; receiving, by the electronic device via broadcast, second positioning assistance data from the server at the second time interval, wherein the second positioning assistance data are based on the second GNSS location information and second measurement data from the N reference stations; and resolving, by the electronic device, second high-precision positioning information based on the second GNSS location information and the second positioning assistance data.

2 . The method of claim 1 , wherein after sending the second setting information to the server, the method further comprises:
sending, by the electronic device when the electronic device meets a second preset condition, the first setting information to the server; sending, by the electronic device, third GNSS location information to the server; receiving, by the electronic device via broadest, third positioning assistance data from the server at the first time interval, wherein the third positioning assistance data are based on the third GNSS location information and third measurement data from the N reference stations; and resolving, by the electronic device, third high-precision positioning information based on the third GNSS location information and the third positioning assistance data.

3 . The method of claim 1 , wherein after sending the first setting information to the server, the method further comprises sending, by the electronic device when the electronic device meets a third preset condition, third setting information to the server, wherein the third setting information requests the server to suspend broadcasting the second positioning assistance data.

4 . The method of claim 3 , wherein after sending the third setting information to the server, the method further comprises:
sending, by the electronic device when the electronic device meets a fourth preset condition, the first setting information to the server; sending, by the electronic device, fourth GNSS location information to the server; receiving, by the electronic device via broadcast, fourth positioning assistance data from the server at the first time interval, wherein the fourth positioning assistance data are based on the fourth GNSS location information and fourth measurement data from the N reference stations; and resolving, by the electronic device, fourth high-precision positioning information based on the fourth GNSS location information and the fourth positioning assistance data.

5 . The method of claim 1 , further comprising:
sending, by the electronic device, a high-precision positioning request to the server in response to the first input, wherein the high-precision positioning request comprises authentication information; receiving, by the electronic device, authentication success information from the server in response to the high-precision positioning request, wherein the authentication success information indicates that the electronic device has completed authentication; and further sending, by the electronic device, the first setting information to the server in response to the authentication success information.

6 . The method of claim 1 , wherein the first preset condition is a positioning precision of the electronic device being less than a first preset precision threshold, and wherein lower positioning precision indicates more accurate positioning of the electronic device.

7 . The method of claim 2 , wherein the second preset condition is any one of the following: the electronic device is in a multipath area, a moving speed of the electronic device is greater than a preset speed threshold, or positioning precision of the electronic device is greater than a second preset precision threshold.

8 . The method of claim 3 , wherein the third preset condition is the electronic device being located indoors or in a tunnel.

9 . The method of claim 4 , wherein the fourth preset condition is the electronic device being located outdoors or outside a tunnel, and wherein the electronic device is in an area in which the N reference stations are located.

10 . The method of claim 8 , further comprising determining the electronic device is located indoors or in the tunnel when a quantity of satellites whose signal intensity is greater than a first signal intensity threshold is less than or equal to a first threshold for a preset time.

11 . The method of claim 9 , further comprising determining the electronic device is located outdoors or outside the tunnel when a quantity of satellites whose signal intensity is greater than a first signal intensity threshold is greater than a second threshold.

12 . The method of claim 7 , further comprising determining the electronic device is in the multipath area when a quantity of satellites whose signal intensity is greater than a third signal intensity threshold is less than a first quantity and greater than a second quantity, wherein the first quantity is greater than the second quantity.

13 . A positioning system, comprising:
an electronic device configured to:
receive a first input;
send first setting information in response to the first input; and
send first GNSS location information; and
a server configured to:
receive the first setting information and the first GNSS location information from the electronic device;
set, using the first setting information, a time interval at which the server broadcasts positioning assistance data as a first time interval;
determine first positioning assistance data based on the first GNSS location information and first measurement data reported by N reference stations, wherein N is a positive integer; and
broadcast the first positioning assistance data to the electronic device at the first time interval, wherein the electronic device is further configured to:
resolve first high-precision positioning information based on the first GNSS location information and the first positioning assistance data;
send, when the electronic device detects that the electronic device meets a first preset condition, second setting information to the server; and
send second GNSS location information to the server, wherein the server is further configured to:
set, using the second setting information, a time interval at which the server broadcas

Assignees

• Huawei Tech Co Ltd

Inventors

• Huang Guosheng
• Chen Zhenhua
• Liu Chunzi
• Liu Yongxiang
• Guo Yongfeng

Classifications

• H04W64/00

  Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management · CPC title

• G01S19/256

  relating to timing, e.g. time of week, code phase, timing offset · CPC title

• H04W4/023 Primary

  using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds · CPC title

• G01S19/14

  specially adapted for specific applications · CPC title

• G01S19/421

  by combining or switching between position solutions or signals derived from different satellite radio beacon positioning systems; by combining or switching between position solutions or signals derived from different modes of operation in a single system · CPC title