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    METHOD FOR REPORTING CHANNEL STATE INFORMATION, USER EQUIPMENT, AND BASE STATION
    81.
    发明申请
    METHOD FOR REPORTING CHANNEL STATE INFORMATION, USER EQUIPMENT, AND BASE STATION 审中-公开

    公开(公告)号：US20200044700A1

    公开(公告)日：2020-02-06

    申请号：US16594646

    申请日：2019-10-07

    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

    Inventor： Jianguo Wang ,  Yongxing Zhou ,  Jianghua Liu

    IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/0417

    Abstract: Embodiments of the present invention provide a method includes: receiving a reference signal sent by a base station; selecting, based on the reference signal, a precoding matrix from a codebook, where a precoding matrix W included in the codebook is a product of three matrices being W1, Z, and W2, that is, W=W1ZW2, where both W1 and Z are block diagonal matrices, W1=a formula (I), Z=a formula (II), each of W1 and Z includes at least one block matrix, that is, NB≥1, and each column of each block matrix Zi in the matrix Z has the following structure formula (III); and sending a precoding matrix indicator PMI to the base station, where the PMI corresponds to the selected precoding matrix, and is used by the base station to obtain the selected precoding matrix W according to the PMI.

    Reporting of channel state information
    82.
    发明授权
    Reporting of channel state information 有权

    公开(公告)号：US10530449B2

    公开(公告)日：2020-01-07

    申请号：US15856460

    申请日：2017-12-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Mattias Frenne ,  Jianghua Liu

    IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/10 ,  H04B7/0456 ,  H04W72/04

    Abstract: A mobile station is connected to a multi-carrier cellular communication system having a plurality of sub-carriers. The sub-carriers are classified into K frequency sub-bands, channel state information (CSI) of the frequency sub-bands is represented by matrices Wi (i=0 . . . K−1), where K is an integer grater than 1. The mobile station determines a first sub-index k1 for the K matrices Wi (i=0 . . . K−1), and a second sub-index k2 for each one of the K matrices Wi (i=0 . . . K−1). The first sub-index k1 is common for all frequency sub-bands, and the second sub-index k2 is specific for the indexed matrix that corresponds to one frequency sub-band. The mobile station reports to a base station of the multi-carrier cellular communication system the first sub-index k1 and at least one second sub-index k2.

    METHOD, DEVICE AND SYSTEM FOR TRANSMITTING ENHANCED DOWNLINK CONTROL CHANNEL
    83.
    发明申请
    METHOD, DEVICE AND SYSTEM FOR TRANSMITTING ENHANCED DOWNLINK CONTROL CHANNEL 审中-公开

    公开(公告)号：US20190245665A1

    公开(公告)日：2019-08-08

    申请号：US16385252

    申请日：2019-04-16

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Qiang Wu ,  Yiqun Qian ,  Yang Li ,  Jianghua Liu

    IPC: H04L5/00 ,  H04W72/04

    CPC classification number: H04L5/0048 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0053 ,  H04W72/042

    Abstract: The present invention discloses a method, a device and a system for transmitting an enhanced downlink control channel, which belong to the communications field. The method for sending an enhanced downlink control channel includes: presetting a multiplexing unit, where the multiplexing unit includes at least one resource block pair, and the at least one resource block pair includes E-PDCCH resources and DM RS resources, and the E-PDCCH resources include multiple control channel elements; sending at least one E-PDCCH corresponding to at least one UE in at least one control channel element of the multiplexing unit, and sending the DM RS corresponding to the at least one UE. The present invention reduces the granularity of an enhanced downlink control channel, saves resources and enhances the downlink control channel, thereby providing more control channels for the UE to use.

    Method and apparatus for measuring and feeding back channel information
    84.
    发明授权
    Method and apparatus for measuring and feeding back channel information 有权

    公开(公告)号：US10367556B2

    公开(公告)日：2019-07-30

    申请号：US16015831

    申请日：2018-06-22

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu

    IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/06

    Abstract: A method for measuring and feeding back channel information and a corresponding apparatus are provided. In an embodiment the method includes determining, by a first network device, a first codebook from a first codebook set, wherein the first codebook set comprises at least two first codebooks, wherein a sub-vector Wx of each first codebook is formed by a zero vector and a non-zero vector, wherein vectors forming the Wx are associated with different groups of antenna ports, wherein each first codebook comprises at least one first sub-vector   [ V a 0 0 V a 1 0 ] and/or at least one second sub-vector   [ 0 V b 0 0 V b 1 ] , and wherein Va0 and Va1 are elements in the vector Va, and Vb0 and Vb1 are elements in the vector Vb and sending a codebook index to a second network device, wherein the codebook index is associated with the first codebook selected from the first codebook set.

    METHOD AND APPARATUS FOR ALLOCATING CONTROL CHANNEL CANDIDATES
    85.
    发明申请
    METHOD AND APPARATUS FOR ALLOCATING CONTROL CHANNEL CANDIDATES 审中-公开

    公开(公告)号：US20190191422A1

    公开(公告)日：2019-06-20

    申请号：US16282732

    申请日：2019-02-22

    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

    Inventor： Jianqin Liu ,  Jianghua Liu ,  Qiang Wu ,  Chi Gao

    IPC: H04W72/04 ,  H04L5/00

    CPC classification number: H04W72/042 ,  H04L5/0053 ,  H04W72/04

    Abstract: The present application provides a method and an apparatus for allocating control channel candidates, which relate to the communications field, and can allocate control channel candidates at different aggregation levels to K ePDCCH sets and reduce complexity of blind detection performed by a UE. The method includes: determining K sets for transmitting a control channel, where each set in the K sets includes at least one physical resource block pair; and allocating control channel candidates at each aggregation level to at least one set in the K sets according to at least one of aggregation levels supported by the control channel to be transmitted, the number of control channel candidates corresponding to each aggregation level, the K sets for transmitting the control channel, and types of the sets.

    Precoding matrix indicator feedback method, receiving method, and apparatus
    86.
    发明授权
    Precoding matrix indicator feedback method, receiving method, and apparatus 有权

    公开(公告)号：US10305558B2

    公开(公告)日：2019-05-28

    申请号：US15274240

    申请日：2016-09-23

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Leiming Zhang ,  Qiang Wu ,  Jianghua Liu

    IPC: H04B7/0456 ,  H04B7/06 ,  H04W88/02

    Abstract: Embodiments of the present invention disclose a precoding matrix indicator feedback method, receiving method, and apparatus. User equipment UE receives a reference signal sent by a base station; the UE selects, based on the reference signal, a precoding matrix for each first subband of N first subbands in a system transmission bandwidth from a codebook, where the codebook includes at least two precoding matrixes, and each precoding matrix is denoted by at least a first precoding matrix indicator PMI and a second PMI, where each first subband of the N first subbands corresponds to a second PMI, and each second subband of M second subbands corresponds to a first PMI; and the UE feeds back the first PMI corresponding to each second subband to the base station, and feeds back the second PMI corresponding to each first subband to the base station.

    Codebook configuration method and user equipment
    87.
    发明授权
    Codebook configuration method and user equipment 有权

    公开(公告)号：US10171145B2

    公开(公告)日：2019-01-01

    申请号：US15895666

    申请日：2018-02-13

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Kunpeng Liu ,  Jianghua Liu ,  Leiming Zhang

    IPC: H04B7/02 ,  H04B7/0456 ,  H04B7/06 ,  H04L1/06 ,  H04B7/0417

    Abstract: The present invention provides a codebook configuration method and user equipment. The UE receives a reference signal that is of an antenna whose quantity of antenna ports is X and that is sent by a base station and configuration information of a codebook subset restriction for the quantity X of antenna ports, where the configuration information of the codebook subset restriction for the quantity X of antenna ports includes first configuration information and second configuration information; determines, according to the configuration information of the codebook subset restriction for the quantity X of antenna ports, a precoding matrix on which channel measurement and feedback need to be performed; and obtains, by means of measurement according to the reference signal, the precoding matrix on which channel measurement and feedback need to be performed and that is of antenna ports.

    Channel state information CSI reporting method and apparatus, and base station antenna
    89.
    发明授权
    Channel state information CSI reporting method and apparatus, and base station antenna 有权

    公开(公告)号：US10128928B2

    公开(公告)日：2018-11-13

    申请号：US15365653

    申请日：2016-11-30

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Leiming Zhang ,  Yongxing Zhou ,  Jianghua Liu ,  Kunpeng Liu

    IPC: G01C11/02 ,  H04B7/06 ,  H04B7/0456

    Abstract: The present invention discloses a channel state information CSI reporting method and apparatus, and a base station antenna. In the method, at least one precoding matrix is selected from a codebook based on a reference signal sent by a base station, and CSI is sent to the base station. The CSI includes at least one selected precoding matrix indicator PMI, and the PMI is corresponding to the selected at least one precoding matrix. At least one precoding matrix W included in the codebook may be expressed as W=W1W2, where is a Kronecker product, and at least one of W1 or W2 is an antenna selection matrix. Therefore, in embodiments of the present invention, the base station can select, according to the at least one precoding matrix that is fed back, one or more antenna ports to send a signal.

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