公开(公告)号：US20220190945A1

公开(公告)日：2022-06-16

申请号：US17687056

申请日：2022-03-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingfei Lv ,  Dejian Xu ,  Xiaoxia Li

IPC: H04J3/06

Abstract: A method includes receiving, by a first node on a first port of the first node, a first packet from a second node; and when the first packet carries a first flag, avoid selecting, by the first node and when selecting a clock source, a clock source corresponding to the first port, where the first flag indicates that time synchronization of the second node is uncertain.

公开(公告)号：US12132567B2

公开(公告)日：2024-10-29

申请号：US17687056

申请日：2022-03-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingfei Lv ,  Dejian Xu ,  Xiaoxia Li

IPC: H04J3/06

CPC classification number: H04J3/0658

Abstract: A method includes receiving, by a first node on a first port of the first node, a first packet from a second node; and when the first packet carries a first flag, avoid selecting, by the first node and when selecting a clock source, a clock source corresponding to the first port, where the first flag indicates that time synchronization of the second node is uncertain.

公开(公告)号：US20170288802A1

公开(公告)日：2017-10-05

申请号：US15625649

申请日：2017-06-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lizhong Qiao ,  Yawei Zhang ,  Huanle Wang ,  Dejian Xu

IPC: H04J3/06

Abstract: A time synchronization method includes, a boundary device of a third-party network side receives a synchronization packet carrying a time synchronization offset and is delivered by a boundary device of an upstream network side on the basis that boundary devices in an entire network are all boundary clock (BC) devices, where the time synchronization offset is a time offset between a time domain of the upstream network and a time domain of the third-party network, and the boundary device of the third-party network side transparently transmits the synchronization packet carrying the time synchronization offset to a boundary device of a downstream network side such that the boundary device of the downstream network side performs time synchronization with the boundary device of the upstream network side according to the time synchronization offset. Thus time synchronization among multiple time domains in a network.

公开(公告)号：US10673551B2

公开(公告)日：2020-06-02

申请号：US15625649

申请日：2017-06-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lizhong Qiao ,  Yawei Zhang ,  Huanle Wang ,  Dejian Xu

IPC: H04J3/06

Abstract: A time synchronization method includes, a boundary device of a third-party network side receives a synchronization packet carrying a time synchronization offset and is delivered by a boundary device of an upstream network side on the basis that boundary devices in an entire network are all boundary clock (BC) devices, where the time synchronization offset is a time offset between a time domain of the upstream network and a time domain of the third-party network, and the boundary device of the third-party network side transparently transmits the synchronization packet carrying the time synchronization offset to a boundary device of a downstream network side such that the boundary device of the downstream network side performs time synchronization with the boundary device of the upstream network side according to the time synchronization offset. Thus time synchronization among multiple time domains in a network.