公开(公告)号：US20230243982A1

公开(公告)日：2023-08-03

申请号：US18042086

申请日：2021-08-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guosheng Huang ,  Zhenhua Chen ,  Chunzi Liu ,  Yongxiang Liu ,  Yongfeng Guo

IPC: G01S19/48 ,  G01S19/25 ,  H04W64/00

CPC classification number: G01S19/48 ,  G01S19/256 ,  H04W64/00

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.

公开(公告)号：US20240151857A1

公开(公告)日：2024-05-09

申请号：US18262596

申请日：2021-12-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yang Xiao ,  Guosheng Huang ,  Yongfeng Guo ,  Guanzhong Tan ,  Yongxiang Liu

IPC: G01S19/37

CPC classification number: G01S19/37

Abstract: A clock error prediction method includes: obtaining historical satellite clock error data of a preset time period which includes broadcast ephemeris clock error data and precise ephemeris clock error data; obtaining corrected precise ephemeris clock error data based on the broadcast ephemeris clock error data; obtaining a single-day clock speed of each satellite through fitting based on single-day clock error data in the corrected precise ephemeris clock error data of each satellite; obtaining a clock speed time sequence of each satellite based on the single-day clock speed of each satellite; obtaining a clock speed change rate of each satellite through fitting based on the clock speed time sequence of each satellite; and obtaining a predicted clock error of each satellite in a preset future time period based on an initial clock error value, a clock speed, and the clock speed change rate of each satellite.