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：US20220174113A1

公开(公告)日：2022-06-02

申请号：US17671758

申请日：2022-02-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingfei Lv ,  Yawei Zhang

IPC: H04L67/1095 ,  H04J3/06

Abstract: A network device synchronization method is provided. In various embodiments, a first SSM and a second SSM are received. The first SSM carries a first SSM code indicating a quality level of a first clock source and a first eSSM code indicating the quality level of the first clock source, the second SSM carries a second SSM code indicating a quality level of a second clock source. The second SSM lacks an eSSM code indicating the quality level of the second clock source, and a value of the first SSM code is equal to a value of the second SSM code. When a value of the first eSSM code is less than 0xFF, calibrating a frequency of the network device based on a timing signal of the first clock source.

公开(公告)号：US11272003B2

公开(公告)日：2022-03-08

申请号：US16882438

申请日：2020-05-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingfei Lv ,  Yawei Zhang

IPC: G06F15/16 ,  H04L67/1095 ,  H04J3/06

Abstract: A network device synchronization method is provided. In various embodiments, a first SSM and a second SSM are received. The first SSM carries a first SSM code indicating a quality level of a first clock source and a first eSSM code indicating the quality level of the first clock source, the second SSM carries a second SSM code indicating a quality level of a second clock source. The second SSM lacks an eSSM code indicating the quality level of the second clock source, and a value of the first SSM code is equal to a value of the second SSM code. When a value of the first eSSM code is less than 0xFF, calibrating a frequency of the network device based on a timing signal of the first clock source.

公开(公告)号：US20200322906A1

公开(公告)日：2020-10-08

申请号：US16904051

申请日：2020-06-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingfei Lv ,  Yawei Zhang

IPC: H04W56/00

Abstract: A method for synchronizing a network device includes: receiving, by the network device, a first SSM and a second SSM, where the first SSM carries a first SSM code for indicating a quality level of a first clock source and a first eSSM code for indicating the quality level of the first clock source, and the second SSM carries a second SSM code for indicating a quality level of a second clock source and a second eSSM code for indicating the quality level of the second clock source. When a value of the first SSM code is less than a value of the second SSM code, the network device calibrates a frequency of the network device based on a timing signal of the first clock source.