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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.
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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.
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公开(公告)号：US20230362854A1
公开(公告)日：2023-11-09
申请号：US18336891
申请日：2023-06-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yawei Zhang , Jingfei Lyu , Songyan Chen , Cong Chen
CPC classification number: H04W56/0015 , H04J3/0658
Abstract: A method for selecting a clock source includes a first network device that obtains synchronization offset data between the first network device and a second network device through a first port in a clock synchronization failed state. The first network device determines, based on the synchronization offset data, whether to refer to, during clock source selection, clock information received by the first port.
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公开(公告)号：US20230217382A1
公开(公告)日：2023-07-06
申请号：US18062933
申请日：2022-12-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jingfei Lv , Yawei Zhang
CPC classification number: H04J3/0635 , H04B7/18513 , H04W56/0015 , H04B17/309
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.
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公开(公告)号：US11552926B2
公开(公告)日：2023-01-10
申请号：US17535221
申请日：2021-11-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianwu Hao , Yawei Zhang , Songyan Chen , Zhiyong Li
IPC: G06F15/16 , H04L61/5007 , H04L41/12
Abstract: A method includes a second system that determines a type of a first management Internet Protocol (IP) address, and sends, to a first system, first information used to indicate the type of the first management IP address; the first system determines the first management IP address based on the type of the first management IP address indicated by the first information, and releases a first correspondence between system identification information and the first management IP address to an advertisement system; the advertisement system sends the first correspondence to a network management system; and the network management system manages the first system based on the first correspondence.
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Patent Agency Ranking
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.
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公开(公告)号：US12149603B2
公开(公告)日：2024-11-19
申请号：US17857412
申请日：2022-07-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jingfei Lv , Yawei Zhang , Jinhui Wang , Hao Li
Abstract: A clock port attribute recovery method includes a network device setting a value of a port attribute of a clock port of the network device to a first value based on the clock port not receiving any one of three types of clock messages: N synchronization messages, follow-up messages, and delay response messages within a timeout interval, where the first value indicates that a message is lost on the clock port. Based on a case that a recovery condition is met, the network device sets the value of the port attribute of the clock port to a second value, where the second value indicates that a status of the clock port is that the message is not lost.
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公开(公告)号：US11963120B2
公开(公告)日：2024-04-16
申请号：US18062933
申请日：2022-12-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jingfei Lv , Yawei Zhang
IPC: H04W56/00 , H04B7/185 , H04B17/309 , H04J3/06
CPC classification number: H04W56/001 , H04B7/18513 , H04J3/0635 , H04W56/0015 , H04B17/309
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.
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公开(公告)号：US20240097812A1
公开(公告)日：2024-03-21
申请号：US18521826
申请日：2023-11-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yawei Zhang , Jingfei Lyu , Jianwu Hao , Songyan Chen
IPC: H04J3/06
CPC classification number: H04J3/0667 , H04J3/0685
Abstract: After a first network device traces a clock of a second network device, when the first network device cannot trace the clock of the second network device, the first network device modifies a parameter value corresponding to a synchronization source selection parameter of the first network device to a first parameter value, where the first parameter value is superior to a parameter value corresponding to a synchronization source selection parameter of the second network device.
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公开(公告)号：US20220166745A1
公开(公告)日：2022-05-26
申请号：US17535221
申请日：2021-11-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianwu Hao , Yawei Zhang , Songyan Chen , Zhiyong Li
IPC: H04L61/5007 , H04L41/12
Abstract: A method includes a second system that determines a type of a first management Internet Protocol (IP) address, and sends, to a first system, first information used to indicate the type of the first management IP address; the first system determines the first management IP address based on the type of the first management IP address indicated by the first information, and releases a first correspondence between system identification information and the first management IP address to an advertisement system; the advertisement system sends the first correspondence to a network management system; and the network management system manages the first system based on the first correspondence.
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