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    4TX CODEBOOK ENHANCEMENT IN LTE
    1.
    发明公开
    4TX CODEBOOK ENHANCEMENT IN LTE 审中-公开

    公开(公告)号：US20230163818A1

    公开(公告)日：2023-05-25

    申请号：US18100466

    申请日：2023-01-23

    Applicant: Texas Instruments Incorporated

    Inventor： Eko Onggosanusi ,  Runhua Chen ,  Ralf Bendlin

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

    CPC classification number: H04B7/0456 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0639 ,  H04B7/0469 ,  H04B7/0626 ,  H04B7/0417 ,  H04B7/046

    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors. In yet another embodiment, the first codebook comprises at least a first precoding matrix and a second precoding matrix, where said first precoding matrix is constructed with a first group of adjacent DFT vectors, and said second precoding matrix is constructed with a second group of uniformly distributed non-adjacent DFT vectors.

    4Tx codebook enhancement in LTE
    3.
    发明授权
    4Tx codebook enhancement in LTE 有权

    公开(公告)号：US10361760B2

    公开(公告)日：2019-07-23

    申请号：US15698015

    申请日：2017-09-07

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Eko Onggosanusi ,  Runhua Chen ,  Ralf Bendlin

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

    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors. In yet another embodiment, the first codebook comprises at least a first precoding matrix and a second precoding matrix, where said first precoding matrix is constructed with a first group of adjacent DFT vectors, and said second precoding matrix is constructed with a second group of uniformly distributed non-adjacent DFT vectors.

    Codebook sub-sampling for CSI feedback on PUCCH for 4Tx MIMO
    4.
    发明授权
    Codebook sub-sampling for CSI feedback on PUCCH for 4Tx MIMO 有权
    用于4Tx MIMO的PUCCH上的CSI反馈的码本子采样

    公开(公告)号：US09143212B2

    公开(公告)日：2015-09-22

    申请号：US14187216

    申请日：2014-02-21

    Applicant: Texas Instruments Incorporated

    Inventor： Runhua Chen ,  Eko Onggosanusi ,  Ralf Bendlin

    IPC: H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04W36/00

    CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/065 ,  H04L5/0057 ,  H04W36/0083 ,  H04W72/0413

    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. User equipment transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI, and a second report coding CQI, PMI1 and PMI2. The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling.

    Abstract translation: 公开了无线通信系统中的信道状态信息（CSI）反馈。 用户设备通过物理上行链路控制信道（PUCCH）发送CSI反馈信号。 如果UE以第一反馈模式配置，则CSI包括联合编码秩指示符（RI）和第一预编码矩阵指示符（PMI1）的第一报告和第二报告编码信道质量指示符（CQI）和第二预编码 矩阵指标（PMI2）。 如果UE被配置在第二反馈模式中，CSI包括第一报告编码RI和第二报告编码CQI，PMI1和PMI2。 共同编码的RI和PMI1采用码本子采样，联合编码PMI1，PMI2和CQI采用码本子采样。

    4TX CODEBOOK ENHANCEMENT IN LTE
    7.
    发明申请
    4TX CODEBOOK ENHANCEMENT IN LTE 有权

    公开(公告)号：US20220029671A1

    公开(公告)日：2022-01-27

    申请号：US17403587

    申请日：2021-08-16

    Applicant: Texas Instruments Incorporated

    Inventor： Eko Onggosanusi ,  Runhua Chen ,  Ralf Bendlin

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

    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors. In yet another embodiment, the first codebook comprises at least a first precoding matrix and a second precoding matrix, where said first precoding matrix is constructed with a first group of adjacent DFT vectors, and said second precoding matrix is constructed with a second group of uniformly distributed non-adjacent DFT vectors.

    4TX codebook enhancement in LTE
    8.
    发明授权
    4TX codebook enhancement in LTE 有权

    公开(公告)号：US11095346B2

    公开(公告)日：2021-08-17

    申请号：US16989587

    申请日：2020-08-10

    Applicant: Texas Instruments Incorporated

    Inventor： Eko Onggosanusi ,  Runhua Chen ,  Ralf Bendlin

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

    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors. In yet another embodiment, the first codebook comprises at least a first precoding matrix and a second precoding matrix, where said first precoding matrix is constructed with a first group of adjacent DFT vectors, and said second precoding matrix is constructed with a second group of uniformly distributed non-adjacent DFT vectors.

    4TX CODEBOOK ENHANCEMENT IN LTE
    10.
    发明申请
    4TX CODEBOOK ENHANCEMENT IN LTE 审中-公开
    LTE中的4TX代码增强

    公开(公告)号：US20160254848A1

    公开(公告)日：2016-09-01

    申请号：US15132024

    申请日：2016-04-18

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Eko Onggosanusi ,  Runhua Chen ,  Ralf Bendlin

    IPC: H04B7/04

    CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/046 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/0639

    Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors. In yet another embodiment, the first codebook comprises at least a first precoding matrix and a second precoding matrix, where said first precoding matrix is constructed with a first group of adjacent DFT vectors, and said second precoding matrix is constructed with a second group of uniformly distributed non-adjacent DFT vectors.

    Abstract translation: 公开了无线通信系统中的信道状态信息（CSI）反馈。 基于预编码矩阵指示符（PMI）反馈生成用于多天线传输的预编码矩阵，其中PMI指示从来自第一码本和第二码本的两个矩阵的矩阵乘法导出的预编码矩阵的选择。 在一个实施例中，第一码本至少包括由第一组相邻离散付里叶变换（DFT）矢量构成的第一预编码矩阵。 在另一个实施例中，第一码本包括至少第二预编码矩阵，其由第二组均匀分布的非相邻DFT向量构成。 在又一实施例中，第一码本至少包括第一预编码矩阵和第二预编码矩阵，其中所述第一预编码矩阵由第一组相邻DFT向量构成，并且所述第二预编码矩阵由第二组均匀 分布不相邻的DFT向量。

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