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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
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.
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Patent Agency Ranking
公开(公告)号：US20190312717A1
公开(公告)日：2019-10-10
申请号：US16449443
申请日：2019-06-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jinhui WANG , Xingjian SHI , Feng WU
Abstract: Embodiments relate to optical transport technologies, and more specifically, to a clock transmission method. Under this method, a first optical data unit (ODU) container can be obtained. Phase discrimination can be performed on an obtained first clock and a first ODU clock of a transmit end, to generate a first PD value. The firstPD value can then be inserted into an overhead of the first ODU container. The first ODU container can be encapsulated into a second ODU container, and the second ODU container can be sent. A rate of the second ODU container is higher than a rate of the first ODU container. The first PD value is transmitted in the first ODU container which is not decapsulated in a subsequent transmission process. Therefore, final recovery of the first clock is not affected, so that a deviation between a finally recovered clock and the first clock is greatly reduced.
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公开(公告)号：US20240143332A1
公开(公告)日：2024-05-02
申请号：US18545232
申请日：2023-12-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wei WU , Jianfeng WANG , Jinhui WANG , Hao LI
IPC: G06F9/38
CPC classification number: G06F9/3861
Abstract: This application provides an exception locating method includes: A first device receives a first exception signal which changes abruptly from a first communication signal when the first communication signal passes through a location of an exception on a first line. The first device receives exception alarm information which is sent by the second device after the second device receives a second exception signal, the second exception signal is a signal that changes abruptly from a second communication signal when the second communication signal passes through the location of the exception. The first device determines the location of the exception based on a first time interval, where the first time interval is an interval between time at which the first exception signal is received and time at which the exception alarm information is received.
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公开(公告)号：US20240204896A1
公开(公告)日：2024-06-20
申请号：US18592602
申请日：2024-03-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xiaoyi ZENG , Jingfei LYU , Jinhui WANG
IPC: H04J3/06
CPC classification number: H04J3/0661
Abstract: A method for monitoring time synchronization, an apparatus, and a system. The method includes: a first network device obtains synchronization path information, where the synchronization path information is information about a synchronization path between a first time synchronization device and a time source. The first network device obtains time offset information of a plurality of time synchronization devices, where the time offset information of each of the plurality of time synchronization devices is information about a time offset between the time synchronization device and an upstream time device, and the plurality of time synchronization devices are time synchronization devices on the synchronization path. The first network device calculates a time offset of the synchronization path based on the synchronization path information and the time offset information of the plurality of time synchronization devices.
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公开(公告)号：US20220171424A1
公开(公告)日：2022-06-02
申请号：US17529823
申请日：2021-11-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wei WU , Jinhui WANG , Hao LI , Yong YANG , Xinhua HUANG
Abstract: A clock oscillator, a clock oscillator production method and use method, and a chip including the clock oscillator are provided. The clock oscillator includes a resonator, a shock-absorbing material layer, and a base, and at least a part of the shock-absorbing material layer is located between the resonator and the base. In the clock oscillator, the shock-absorbing material layer is added between the resonator and the base, and the shock-absorbing material layer can effectively prevent a mechanical wave from being conducted between the base and the resonator, so that the resonator is protected from external vibration. This can ensure, when there is external vibration, that an output frequency of the resonator is not deteriorated and improve shock absorption performance of the clock oscillator.
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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
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.
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