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:
Feb. 07, 2023
Filed:
Apr. 30, 2021
Huawei Technologies Co., Ltd., Shenzhen, CN;
Yueping Leng, Dongguan, CN;
Kuichao Song, Nanjing, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A time synchronization method, applied to a power-line communication (PLC) network that includes a head end node and at least one tail end node coupled to the head end node. The method includes the head end node generates data about voltage zero-crossing points based on reference time, where the data about the voltage zero-crossing points includes zero-crossing time points of the voltage zero-crossing points. When a first timing point arrives, the head end node sends first information to the tail end node, where the first information includes a timestamp of a first zero-crossing point, the first zero-crossing point is a voltage zero-crossing point closest to the first timing point, and the timestamp of the first zero-crossing point is used by the tail end node to determine a zero-crossing time point of a second zero-crossing point.