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    Beam establishment method and apparatus
    1.
    发明授权
    Beam establishment method and apparatus 有权

    公开(公告)号：US12149396B2

    公开(公告)日：2024-11-19

    申请号：US17738863

    申请日：2022-05-06

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jianwei Zhou ,  Chenlei Xu ,  Hejia Luo ,  Xiaolu Wang

    IPC: H04L27/26 ,  H04W56/00 ,  H04W74/0833

    Abstract: A terminal apparatus is provided. The terminal apparatus obtains synchronization signal and physical broadcast channel (PBCH) blocks (SSBs) in a plurality of beams; then determines a target beam in the plurality of beams based on an association relationship between an SSB index and a first random access preamble, where the first random access preamble is determined based on a cyclic shift and/or an order of symbols; and finally sends the random access preamble by using the target beam to initiate a random access request. A communication device receives the first random access preamble in the random access request sent by the terminal apparatus, and then, determines, based on the association relationship, the target beam accessed by the terminal apparatus. The first random access preamble is determined based on the cyclic shift and/or the order of symbols.

    Method and related device for determining timing advance
    2.
    发明授权
    Method and related device for determining timing advance 有权

    公开(公告)号：US11743854B2

    公开(公告)日：2023-08-29

    申请号：US17671335

    申请日：2022-02-14

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Xiaolu Wang ,  Hejia Luo ,  Chenlei Xu ,  Rong Li ,  Jun Wang

    IPC: H04W56/00 ,  H04B7/185

    CPC classification number: H04W56/0045 ,  H04B7/18513 ,  H04W56/006

    Abstract: Example methods and apparatus for determining a timing advance are described. One example method includes obtaining ephemeris information of a satellite, where the ephemeris information includes coordinates of the satellite and an ephemeris error of the satellite. A timing advance is determined according to a preset rule based on the ephemeris information and location information of a terminal device, where the location information includes coordinates of the terminal device and a positioning error of the terminal device. The preset rule is determined by using a first horizontal distance, a first vertical distance, the ephemeris error, and the positioning error.

    Bandwidth Part Switching Method, Apparatus, and System
    3.
    发明公开
    Bandwidth Part Switching Method, Apparatus, and System 审中-公开

    公开(公告)号：US20230262677A1

    公开(公告)日：2023-08-17

    申请号：US18301521

    申请日：2023-04-17

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jianwei Zhou ,  Yu Wang ,  Ying Chen ,  Hejia Luo ,  Chenlei Xu ,  Jun Wang

    IPC: H04W72/044 ,  H04W48/08

    CPC classification number: H04W72/046 ,  H04W48/08

    Abstract: A bandwidth part switching method, is applicable to a non-terrestrial network (NTN) to implement BWP switching based on multi-color frequency-division multiplexing. In the method, a terminal device may report, in a second BWP to a network device, an index of a first SSB whose signal quality is greater than or equal to a first threshold in one or more SSBs in a first BWP, and switch from the second BWP to a third BWP. The one or more SSBs correspond to at least one BWP other than the first BWP, and the third BWP is in the at least one BWP and corresponds to the first SSB. After receiving the index of the first SSB in the second BWP, the network device determines the third BWP, and performs service data transmission with the terminal device in the third BWP.

    Satellite communication method and related communication device
    4.
    发明授权
    Satellite communication method and related communication device 有权

    公开(公告)号：US12047158B2

    公开(公告)日：2024-07-23

    申请号：US17707558

    申请日：2022-03-29

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Chenlei Xu ,  Jianwei Zhou ,  Hejia Luo ,  Xiaolu Wang

    IPC: H04B7/185 ,  H04L27/26 ,  H04W74/08 ,  H04W74/0833

    CPC classification number: H04B7/18513 ,  H04L27/2607 ,  H04W74/0833

    Abstract: The disclosure provides satellite communication methods and related devices. One example method includes generating a random access preamble sequence which includes a cyclic prefix, a sequence part, and a guard interval. The sequence part includes a subsequence A and a subsequence B, or the sequence part includes a subsequence C, and the subsequence C is a time domain superimposed sequence of a subsequence A and a subsequence B. The subsequence A includes at least one preamble symbol, the subsequence B includes at least one preamble symbol, and the subsequence A and the subsequence B are respectively generated by using ZC sequences of different root indexes, a quantity of subsequences A is m, a quantity of subsequences B is m or m−1, and m is a positive integer. The method further includes outputting the random access preamble sequence.

    Timing advance update method, terminal, and base station
    5.
    发明授权
    Timing advance update method, terminal, and base station 有权

    公开(公告)号：US11968640B2

    公开(公告)日：2024-04-23

    申请号：US17407526

    申请日：2021-08-20

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Chenlei Xu ,  Jianwei Zhou ,  Zhenjun Jiang ,  Hejia Luo

    IPC: H04W56/00 ,  H04W84/06

    CPC classification number: H04W56/005 ,  H04W56/0035 ,  H04W56/009 ,  H04W84/06

    Abstract: This application provides an example timing advance update method, an example terminal, and an example base station. One example method includes receiving, by a terminal, an updated timing advance TA value and a beam cell identity of a beam cell in which the terminal is located that are sent by a base station. The example method also includes obtaining, by the terminal, corresponding TA compensation information based on the beam cell identity. The example method further includes performing, by the terminal, TA compensation in a TA update period based on the updated TA value and the TA compensation information. The example method also includes sending, by the terminal, uplink data by using a TA value obtained after TA compensation is performed.

    Satellite communication method and apparatus
    8.
    发明授权
    Satellite communication method and apparatus 有权

    公开(公告)号：US12120566B2

    公开(公告)日：2024-10-15

    申请号：US17704733

    申请日：2022-03-25

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Jianwei Zhou ,  Hejia Luo ,  Chenlei Xu ,  Xiaolu Wang

    IPC: H04W36/06 ,  H04W56/00 ,  H04W72/0446 ,  H04W72/21

    CPC classification number: H04W36/06 ,  H04W56/003 ,  H04W72/0446 ,  H04W72/21

    Abstract: This application provides example satellite communication methods and example apparatuses. One example method includes receiving, by a terminal device, first information sent by a satellite, where the first information indicates a first timing change rate range. The terminal device can then measure a downlink timing change rate to obtain a first downlink timing change rate. The terminal device can then determine a first uplink timing change rate based on the first downlink timing change rate and the first timing change rate range. The terminal device can then perform uplink communication with the satellite based on the first uplink timing change rate.

    TIMING OFFSET PARAMETER UPDATE METHOD, DEVICE, AND SYSTEM
    9.
    发明公开
    TIMING OFFSET PARAMETER UPDATE METHOD, DEVICE, AND SYSTEM 审中-公开

    公开(公告)号：US20230217397A1

    公开(公告)日：2023-07-06

    申请号：US18182164

    申请日：2023-03-10

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Jianwei Zhou ,  Ying Chen ,  Xiaolu Wang ,  Chenlei Xu ,  Hejia Luo ,  Yunfei Qiao

    IPC: H04W56/00

    CPC classification number: H04W56/0045

    Abstract: Embodiments of this application relate to the field of communication technologies, and provide a timing offset parameter update method, a device, and a system, to help reduce signaling overheads when a terminal device updates a value of a timing offset parameter. The method includes: A terminal device obtains a timing advance adjustment variation corresponding to the terminal device, where the timing advance adjustment variation is a difference between a timing advance adjustment amount currently used by the terminal device and a timing advance adjustment amount used at a previous moment. The terminal device determines whether an absolute value of the timing advance adjustment variation is greater than or equal to a first threshold. If the absolute value is greater than or equal to the first threshold, the terminal device sends, to a network device, first indication information used to indicate an update regularity of a timing offset parameter.

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