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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.

    Method for indicating direct current subcarrier and communication apparatus
    5.
    发明授权
    Method for indicating direct current subcarrier and communication apparatus 有权

    公开(公告)号：US12088536B2

    公开(公告)日：2024-09-10

    申请号：US18150930

    申请日：2023-01-06

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Zhenjun Jiang ,  Yunfei Qiao ,  Jianwei Zhou ,  Chenlei Xu

    IPC: H04L5/00 ,  H04L5/02

    CPC classification number: H04L5/0098 ,  H04L5/023

    Abstract: The present disclosure relates to methods for indicating a direct current subcarrier and communication apparatuses. In one example method, a second communication apparatus may explicitly or implicitly indicate a location of a first direct current subcarrier and a location of a second direct current subcarrier to a first communication apparatus. The first direct current subcarrier is a direct current subcarrier corresponding to a transmit frequency used by the second communication apparatus. The second direct current subcarrier is a direct current subcarrier corresponding to a receive frequency used by the first communication apparatus.

    Uplink Signal Sending and Receiving Method, and Apparatus
    7.
    发明公开
    Uplink Signal Sending and Receiving Method, and Apparatus 审中-公开

    公开(公告)号：US20230319751A1

    公开(公告)日：2023-10-05

    申请号：US18301038

    申请日：2023-04-14

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04W56/00

    CPC classification number: H04W56/0045

    Abstract: An uplink signal sending and receiving method includes that a first communication apparatus obtains a first timing advance (TA) change rate, and sends an uplink signal in a plurality of first time periods. There is a first time interval between the plurality of first time periods to compensate for a time synchronization drift. A length of the first time interval and a location of the first time interval between the plurality of first time periods are determined based on the first TA change rate, and the first TA change rate is a TA change rate in a communication process of the first communication apparatus.

    Random Access Method and Apparatus
    8.
    发明申请
    Random Access Method and Apparatus 有权

    公开(公告)号：US20210392703A1

    公开(公告)日：2021-12-16

    申请号：US17459544

    申请日：2021-08-27

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04W74/08 ,  H04J13/00 ,  H04L27/26

    Abstract: This application provides a random access method and an apparatus. The method includes: receiving, by a terminal device, a broadcast signal; and sending, by the terminal device, a random access signal, where a preamble sequence in the random access signal includes K first symbols and Q second symbols, the first symbol and the second symbol are different from each other, K and Q are integers greater than or equal to 1, K+Q=NSEQ, and NSEQ is a quantity of symbols included in the preamble sequence.

    Access method and apparatus
    9.
    发明授权
    Access method and apparatus 有权

    公开(公告)号：US12302227B2

    公开(公告)日：2025-05-13

    申请号：US17825787

    申请日：2022-05-26

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Hejia Luo ,  Xiaolu Wang ,  Jianwei Zhou ,  Chenlei Xu ,  Ying Chen ,  Rong Li

    IPC: H04W48/16 ,  H04B7/185

    Abstract: The present disclosure relates to access methods and apparatuses. In one example method, a terminal device determines, based on whether a first frequency offset parameter is in a frequency offset parameter range, whether to access a first cell. If the first frequency offset parameter is in the frequency offset parameter range, a current location of the terminal device is not at an edge of the cell. Otherwise, the current location of the terminal device may be at the edge of the cell.

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