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：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：US20160080100A1

公开(公告)日：2016-03-17

申请号：US14947035

申请日：2015-11-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Linyang YAN ,  Song LIU

IPC: H04J3/06 ,  H04L12/24

CPC classification number: H04J3/0688 ,  H04J3/0641 ,  H04J3/0667 ,  H04L41/0672

Abstract: Embodiments relate to the field of communications, and provide a method for a PTP synchronization network and an apparatus, which help to reduce costs of obtaining performance of a Precision Time Protocol synchronization network. The method includes: executing, by a slave clock apparatus, an operation of time synchronization with a first apparatus according to the PTP through a first port; setting a state of a second port of the slave clock apparatus to slave; obtaining information required for determining a time offset between the slave clock apparatus and a second apparatus; determining an offset according to the information; if an absolute value of the offset is greater than a threshold, determining that time synchronization performance of a first link is faulty or time synchronization performance of a second link is faulty; and sending a message to a third apparatus.

Abstract translation: 实施例涉及通信领域，并且提供了一种用于PTP同步网络和装置的方法，其有助于降低获得精确时间协议同步网络性能的成本。 该方法包括：由从时钟装置通过第一端口执行根据PTP的与第一装置的时间同步的操作; 将从时钟设备的第二端口的状态设置为从设备; 获得确定从时钟装置和第二装置之间的时间偏移所需的信息; 根据信息确定偏移量; 如果偏移的绝对值大于阈值，则确定第一链路的时间同步性能有故障或第二链路的时间同步性能有故障; 并向第三设备发送消息。