Location calibration method and device

Patent metadata

Field	Value
Publication number	US-12532289-B2
Application number	US-202118005043-A
Country	US
Kind code	B2
Filing date	Jul 9, 2021
Priority date	Jul 10, 2020
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

Embodiments of the present disclosure provide a location calibration method and device. A terminal device first receives a location assistance message sent by a location server, where the location assistance message includes location calibration information. Then, the terminal device determines a target location calibration value corresponding to the terminal device in the location calibration information according to currently determined terminal location information, and calibrates the currently determined terminal location information based on the target location calibration value.

First claim

The invention claimed is:

1 . A location calibration method, comprising:
receiving, by a terminal device, a location assistance message sent by a location server, wherein the location assistance message comprises location calibration information, and wherein the location calibration information comprises at least one piece of reference location information and a location calibration value corresponding to each piece of reference location information; performing, by the terminal device, location measurement according to the location assistance message sent by the location server; and determining, by the terminal device, terminal location information according to a location measurement result; determining, by the terminal device, a target location region where the terminal device is currently located according to the terminal location information; determining, by the terminal device, target location configuration information according to a location configuration used for determining the terminal location information; determining, by the terminal device, the target reference location information from the at least one piece of reference location information according to the target location region and the target location configuration information; and calibrating, by the terminal device, the terminal location information according to the target location calibration value corresponding to the target reference location information to obtain calibrated terminal location information; wherein the reference location information comprises at least one of the following information: a location region and location configuration information, and wherein the location configuration information comprises at least one of a location method and a transmission and receiving point identifier.

2 . The method of claim 1 , wherein each location region corresponds to one or more pieces of location configuration information.

3 . The method of claim 1 , wherein each piece of reference location information comprises a location region and a piece of location configuration information, and each piece of reference location information corresponds to a unique location calibration value.

4 . The method of claim 1 , wherein the location region is a location region of a preset length, a preset width, and a preset height.

5 . A location calibration method, comprising:
sending, by a location server, a location assistance message to a terminal device, wherein the location assistance message comprises location calibration information, and wherein the location calibration information comprises at least one piece of reference location information and a location calibration value corresponding to each piece of reference location information, the location calibration information is used for the terminal device to determine a target location region where the terminal device is currently located according to terminal location information determined according to a location measurement result of location measurement performed according to the location assistance message, determine target location configuration information according to a location configuration used for determining the terminal location information, determine the target reference location information from the at least one piece of reference location information according to the target location region and the target location configuration information, and calibrate the terminal location information according to the target location calibration value corresponding to the target reference location information to obtain calibrated terminal location information; wherein the reference location information comprises at least one of the following information: a location region and location configuration information, and wherein the location configuration information comprises at least one of a location method and a transmission and receiving point identifier.

6 . The method of claim 5 , wherein each location region corresponds to one or more pieces of location configuration information.

7 . The method of claim 5 , wherein each piece of reference location information comprises a location region and a piece of location configuration information, and each piece of reference location information corresponds to a unique location calibration value.

8 . The method of claim 5 , wherein the location region is a location region of a preset length, a preset width, and a preset height.

9 . A terminal device, comprising at least one processor and a memory, wherein
the memory stores a computer-executable instruction; and the at least one processor executes the computer-executable instruction stored in the memory to enable the at least one processor to: receive a location assistance message sent by a location server, wherein the location assistance message comprises location calibration information, and wherein the location calibration information comprises at least one piece of reference location information and a location calibration value corresponding to each piece of reference location information; perform location measurement according to the location assistance message sent by the location server; determine terminal location information according to a location measurement result; determine a target location region where the terminal device is currently located according to the terminal location information; determine target location configuration information according to a location configuration used for determining the terminal location information; determine the target reference location information from the at least one piece of reference location information according to the target location region and the target location configuration information; and calibrate the terminal location information according to the target location calibration value corresponding to the target reference location information to obtain calibrated terminal location information; wherein the reference location information comprises at least one of the following information: a location region and location configuration information, and wherein the location configuration information comprises at least one of a location method and a transmission and receiving point identifier.

Assignees

• Beijing Unisoc Comm Tech Co Ltd

Inventors

• Fan Huifang
• Gu Xiangxin

Classifications

• H04W4/029

  Location-based management or tracking services · CPC title

• G01S5/0236

  Assistance data, e.g. base station almanac · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W64/00 Primary

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

• H04W64/003 Primary

  locating network equipment · CPC title