The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2021
Filed:
Mar. 23, 2020
Huawei Technologies Co., Ltd., Shenzhen, CN;
Dandan Zeng, Beijing, CN;
Yongliang Wang, Xi'an, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A road matching based positioning method includes obtaining coordinates of a current location after a positioning request of an application is received, searching a database for data of segments near the current location, determining a segment crosspoint based on start point coordinates and end point coordinates of the segments and respective attributes of the segments, and obtaining coordinates of the segment crosspoint, and performing road matching using a positioning point and a road network topology to obtain coordinates of the positioning point after correction, and sending the coordinates of the positioning point after correction to the application that presents the coordinates to a user. The road network topology can be reconstructed at an operating system layer by using simplified segment data, and a high-precision positioning service is implemented through road matching.