US 12,282,100 B2
User terminal positioning method, device, and system
Xin Jiang, Beijing (CN); Wu Zhao, Beijing (CN); Hua Zou, Beijing (CN); Jian Wang, Beijing (CN); Hui Xu, Beijing (CN); and Ting Ao, Beijing (CN)
Assigned to CHINA MOBILE SHANGHAI ICT CO., LTD., Shanghai (CN); and CHINA MOBILE COMMUNICATIONS GROUP CO., LTD., Beijing (CN)
Appl. No. 17/759,097
Filed by CHINA MOBILE SHANGHAI ICT CO., LTD., Shanghai (CN); and CHINA MOBILE COMMUNICATIONS GROUP CO., LTD., Beijing (CN)
PCT Filed Dec. 9, 2020, PCT No. PCT/CN2020/134914
§ 371(c)(1), (2) Date Jul. 19, 2022,
PCT Pub. No. WO2021/147543, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 202010069444.6 (CN), filed on Jan. 21, 2020.
Prior Publication US 2023/0041480 A1, Feb. 9, 2023
Int. Cl. G01S 19/07 (2010.01); G01S 19/41 (2010.01); G01S 19/09 (2010.01); G01S 19/46 (2010.01); H04L 67/10 (2022.01); H04L 67/52 (2022.01)
CPC G01S 19/071 (2019.08) [G01S 19/41 (2013.01); G01S 19/09 (2013.01); G01S 19/46 (2013.01); H04L 67/10 (2013.01); H04L 67/52 (2022.05)] 7 Claims
OG exemplary drawing
 
1. A user terminal positioning method, performed by an edge cloud server, the method comprising:
receiving satellite positioning information from a user terminal;
determining a location service area where the user terminal is located;
acquiring a differential correction model corresponding to the location service area from a public cloud server according to the location service area, wherein the differential correction model corresponding to the location service area is determined according to a differential correction model of a grid coverage area to which the location service area belongs, and the differential correction model of the grid coverage area to which the location service area belongs is determined according to observation data and location coordinates of a reference station in the grid coverage area;
performing location calculation using the satellite positioning information and the differential correction model to obtain location information of the user terminal; and
sending the location information to the user terminal.