公开(公告)号：US20210328696A1

公开(公告)日：2021-10-21

申请号：US17360059

申请日：2021-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingfei LV ,  Song LIU ,  Chuan XU

IPC: H04J3/06

Abstract: This application discloses a clock synchronization method and apparatus, and related storage medium, and pertains to the field of communications technologies. A network device receives an announce message from a first master clock node and an announce message from a second master clock node; and when an identifier of a first clock source node carried in the announce message of the first master clock node is the same as an identifier of a second clock source node carried in the announce message of the second master clock node, selects a master clock node with a smaller clock deviation from the first master clock node and the second master clock node, and then calibrates a clock of the network device based on time information of the master clock node. The precision of clock synchronization by the network device is improved.

公开(公告)号：US20210344435A1

公开(公告)日：2021-11-04

申请号：US17374108

申请日：2021-07-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jinhui WANG ,  Chuan XU

IPC: H04J3/06 ,  H04W56/00

Abstract: A method for exchanging a clock synchronization packet performed by a network apparatus, including: exchanging a clock synchronization packet with a first clock source, where the network apparatus includes a boundary clock; determining a first time deviation of the boundary clock relative to the first clock source according to the clock synchronization packet exchanged with the first clock source, where the boundary clock avoids performing an operation of calibrating a time of a local clock of the boundary clock according to the first time deviation; and sending a clock synchronization packet to a first slave clock of the boundary clock, where the clock synchronization packet includes a first timestamp, a value of the first timestamp is equal to a first corrected value, and the first corrected value is a value obtained by the boundary clock by correcting the time of the local clock by using the first time deviation.

公开(公告)号：US20250088299A1

公开(公告)日：2025-03-13

申请号：US18954738

申请日：2024-11-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingfei LV ,  Song LIU ,  Chuan XU

IPC: H04J3/06 ,  H04W56/00

Abstract: This application discloses a clock synchronization method and apparatus, and a storage medium, which pertains to the field of communication technologies. The method includes: first receiving, by a network device, an announce packet from a first master clock node and an announce packet from a second master clock node, when an identifier of a first clock source node carried in the announce packet from the first master clock node is the same as an identifier of a second clock source node carried in the announce packet from the second master clock node, selecting a master clock node with a relatively small clock deviation, and then calibrating a clock of the network device based on time information of the master clock node. In this application, precision of clock synchronization performed by the network device is higher, and further, precision of a clock calibrated by the network device is higher.

公开(公告)号：US20210328698A1

公开(公告)日：2021-10-21

申请号：US17360817

申请日：2021-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingfei LV ,  Song LIU ,  Chuan XU

IPC: H04J3/06 ,  H04W56/00

Abstract: This application discloses a clock synchronization method and apparatus, and a storage medium, which pertains to the field of communication technologies. The method includes: first receiving, by a network device, an announce packet from a first master clock node and an announce packet from a second master clock node, when an identifier of a first clock source node carried in the announce packet from the first master clock node is the same as an identifier of a second clock source node carried in the announce packet from the second master clock node, selecting a master clock node with a relatively small clock deviation, and then calibrating a clock of the network device based on time information of the master clock node. In this application, precision of clock synchronization performed by the network device is higher, and further, precision of a clock calibrated by the network device is higher.

公开(公告)号：US20190327010A1

公开(公告)日：2019-10-24

申请号：US16455721

申请日：2019-06-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jinhui WANG ,  Chuan XU

IPC: H04J3/06 ,  H04W56/00

Abstract: A method for exchanging a clock synchronization packet performed by a network apparatus, including: exchanging a clock synchronization packet with a first clock source, where the network apparatus includes a boundary clock; determining a first time deviation of the boundary clock relative to the first clock source according to the clock synchronization packet exchanged with the first clock source, where the boundary clock avoids performing an operation of calibrating a time of a local clock of the boundary clock according to the first time deviation; and sending a clock synchronization packet to a first slave clock of the boundary clock, where the clock synchronization packet includes a first timestamp, a value of the first timestamp is equal to a first corrected value, and the first corrected value is a value obtained by the boundary clock by correcting the time of the local clock by using the first time deviation.