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公开(公告)号：US20210119717A1
公开(公告)日：2021-04-22
申请号：US17132150
申请日：2020-12-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: A synchronization method and an apparatus are provided to meet a time precision requirement of an industrial factory in a scenario in which a mobile network is connected to an Ethernet network. In an embodiment, a first device determines seventh timestamp information by using timestamp information of receiving and sending packets in a mobile network, so that a second device calculates a time offset between the first device and the second device based on the seventh timestamp information and time points of receiving and sending packets in an Ethernet network, to perform time synchronization. In the method, impact of a transmission delay between the first device and the second device can be avoided, so that a time precision requirement of an industrial factory can be met in a scenario in which the mobile network is connected to the Ethernet network.
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公开(公告)号：US20200314741A1
公开(公告)日：2020-10-01
申请号：US16901918
申请日：2020-06-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuan WANG , Fenqin ZHU , Lin SHU
Abstract: The present application discloses a DCN processing method for a PLMN that is applied to a network sharing scenario. An access feedback message of a network side is received, and selection assistance information of a DCN and an identifier of a PLMN that serves UE are obtained from the access feedback message, so as to know a PLMN that is actually accessed by the UE. A correspondence between the selection assistance information of the DCN and the identifier of the PLMN that serves the UE is stored. When the UE moves to coverage of the PLMN, a requested DCN to be accessed can be directly determined according to the correspondence, and a RAN node is requested to access the determined DCN. Therefore, a redirection process is reduced, and resource overheads are reduced.
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公开(公告)号：US20250088988A1
公开(公告)日：2025-03-13
申请号：US18960651
申请日：2024-11-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xin ZANG , Runze ZHOU , Yuan WANG
IPC: H04W56/00
Abstract: Embodiments of this application provide a time synchronization method and a communication apparatus. The method includes: An access network device obtains first round-trip time information between the access network device and a terminal device, second round-trip time information between the access network device and a benchmark device, and third round-trip time information between the benchmark device and the terminal device; determines a delay from the access network device to the terminal device based on the obtained t round-trip time information; and sends the delay or an offset between the access network device and the terminal device to the terminal device, where the delay or the offset is used for time synchronization of the terminal device. In this solution, the access network device may accurately determine the offset or the delay, and the terminal device performs time synchronization based on the offset or the delay.
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14.发明申请公开(公告)号：US20250044191A1
公开(公告)日：2025-02-06
申请号：US18362145
申请日：2023-07-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xiaoyi BAO , Yuan WANG
IPC: G01M11/00
Abstract: System and method for determining distributed birefringence variations in a polarization-maintaining optical fiber (PM fiber). The method includes causing a pump signal to be sent into the PM fiber to generate a Brillouin dynamic grating (BDG) therein, causing a first chirped probe optical pulse to be sent into the PM fiber, receiving a first reflected signal, the first reflected signal being a first portion of the first chirped probe optical pulse reflected by the BDG, receiving a second reflected signal, the second reflected signal being a second portion of the first chirped probe optical pulse reflected by the BDG, and determining a variation of birefringence of the PM fiber indicative of a variation of physical disturbance of the PM fiber between times of reflections on the BDG of the first and second reflected signals.
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公开(公告)号：US20240389042A1
公开(公告)日：2024-11-21
申请号：US18785607
申请日：2024-07-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xin ZANG , Runze ZHOU , Yuan WANG
IPC: H04W56/00
Abstract: Embodiments of this application provide a timing method and a communication apparatus. The method includes: A clock management network element receives a clock request message from at least one terminal device. The clock request message includes an identifier of the terminal device and timing precision requested by the terminal device, and the at least one terminal device includes a second terminal device that requests first timing precision. The clock management network element determines that a first clock deployed on a first terminal device meets the first timing precision. The clock management network element sends first timing configuration information to the first terminal device. The first timing configuration information includes an identifier of the second terminal device. This application can optimize a manner in which the first terminal device performs timing for the second terminal device, to implement timing information isolation.
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Patent Agency Ranking
公开(公告)号：US20210227492A1
公开(公告)日：2021-07-22
申请号：US17224339
申请日：2021-04-07
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuan WANG , Zhongping CHEN
Abstract: This application provides a packet transmission method includes: receiving from a first session management network element, a first message including an address of a first terminal device and an identifier of a first user plane network element servicing for the first terminal device; receiving from a second session management network element, a second message including an address of a second terminal device and an identifier of a second user plane network element servicing for the second terminal device; determining, that the first terminal device and the second terminal device belong to a same local area network group; sending to the first session management network element,the identifier of the second user plane network element and the address of the second terminal device; and sending to the second session management network element, the identifier of the first user plane network element and the address of the first terminal device.
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公开(公告)号：US20200280892A1
公开(公告)日：2020-09-03
申请号：US16877748
申请日：2020-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhongping CHEN , Yuan WANG
Abstract: Embodiments relate to the field of wireless communications technologies, and in particular, to a session context handling method, a network element, and a terminal device. A method includes: receiving, by a session management network element, a first message that is from a mobility management network element and that is used to request to establish a session for a terminal device, where the first message carries an identifier of a data network; obtaining, by the session management network element, capability information of the data network based on the identifier of the data network; and when the capability information of the data network is that the data network supports a non-IP session, generating, by the session management network element, a non-IP session context based on an Ethernet or unstructured session context of the terminal device.
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公开(公告)号：US20200245218A1
公开(公告)日：2020-07-30
申请号：US16850547
申请日：2020-04-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuan WANG , Yang XIN , Zhongping CHEN
Abstract: This application relates to the field of wireless communications technologies, and in particular, to a handover method, including: receiving, by a mobility management network element of a first network, a first handover request sent by an access network, and learning that a terminal device needs to be handed over to a second network; obtaining an identifier of the terminal device based on the first handover request; determining, by the mobility management network element of the first network, a target mobility management network element of the second network based on the identifier of the terminal device; and sending, by the mobility management network element of the first network, a second handover request to the target mobility management network element of the second network, and requesting to hand over the terminal device to the second network.
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19.发明申请公开(公告)号：US20180368056A1
公开(公告)日：2018-12-20
申请号：US16114509
申请日：2018-08-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuan WANG , Fenqin ZHU , Jingwang MA
Abstract: Embodiments of the present invention relate to the communications field, and provide a method for determining a control plane node, an apparatus, and a wireless communications system, so as to select, for UE, a control plane node corresponding to a network slice to which the UE belongs, thereby ensuring that the control plane node can provide a customized service for the UE. The method includes: obtaining, by UE, indication information, where the indication information is used to indicate a network slice to which the UE belongs; and sending, by the UE, an access layer request message to a radio access network node, where the access layer request message includes the indication information, and the access layer request message is used to trigger the radio access network node to determine, based on the indication information, a control plane node corresponding to the network slice for the UE.
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公开(公告)号：US20240372928A1
公开(公告)日：2024-11-07
申请号：US18774207
申请日：2024-07-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: A communication method and a communication apparatus. A first network element receives a first message and a second message. The first network element subscribes to the first data from a second network element based on the first message. The first network element determines whether the second data can be obtained from the first data. The first network element determines, based on a determining result, whether to subscribe to third data from the second network element. The first network element determines, based on the determining result, whether to subscribe to the second data from the second network element to avoid subscribing to repeated data from the second network element. The second network element is prevented from repeatedly collecting and reporting same data so that a load of the first network element and the second network element can be reduced.
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