利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

195 条记录 (耗时 0.034 秒)

    LINEAR PRECODING IN FULL-DIMENSIONAL MIMO SYSTEMS AND DYNAMIC VERTICAL SECTORIZATION
    1.
    发明申请
    LINEAR PRECODING IN FULL-DIMENSIONAL MIMO SYSTEMS AND DYNAMIC VERTICAL SECTORIZATION 审中-公开
    全尺寸MIMO系统中的线性预测和动态垂直分割

    公开(公告)号：US20160065282A1

    公开(公告)日：2016-03-03

    申请号：US14786854

    申请日：2014-05-28

    申请人： Yu ZHANG ,  Wei CHAO ,  Peng CHENG ,  Neng WANG ,  Jilei HOU ,  QUALCOMM INCORPORATED

    发明人： Yu ZHANG ,  Wei CHAO ,  Peng CHENG ,  Neng WANG ,  Jilei HOU

    IPC分类号： H04B7/04 ,  H04W16/10 ,  H04L1/00

    摘要： Certain aspects of the present disclosure provide methods and apparatus for linear precoding in full-dimensional MIMO (FD-MIMO) systems. According to aspects, an eNB may compress a larger number of antenna elements to a smaller number of antenna ports. The eNB may use a port precoding matrix to transmit reference signals to a UE, receive feedback regarding CSI based on the reference signals, and transmit data to the UE, based on a mapping of multiple data layers and mapping of antenna ports to the physical antenna elements. Further, aspects include performing elevation beamforming by dynamically forming one or more vertical sectors based on UE feedback in the elevation domain.

    摘要翻译： 本公开的某些方面提供了在全维MIMO（FD-MIMO）系统中用于线性预编码的方法和装置。 根据方面，eNB可以将较大数量的天线元件压缩到较少数量的天线端口。 eNB可以使用端口预编码矩阵来向UE发送参考信号，基于参考信号接收关于CSI的反馈，并且基于多个数据层的映射以及将天线端口映射到物理天线来向UE发送数据 元素。 此外，方面包括通过基于仰角域中的UE反馈动态地形成一个或多个垂直扇区来执行提升波束成形。

    CQI REPORTING WITH PMI FREQUENCY DOMAIN UNITS
    3.
    发明申请
    CQI REPORTING WITH PMI FREQUENCY DOMAIN UNITS 有权

    公开(公告)号：US20220014249A1

    公开(公告)日：2022-01-13

    申请号：US17424819

    申请日：2020-01-23

    申请人： Chenxi HAO ,  Yu ZHANG ,  QUALCOMM Incorporated

    发明人： Chenxi HAO ,  Yu ZHANG

    IPC分类号： H04B7/06 ,  H04B7/0417

    摘要： Certain aspects of the present disclosure provide techniques for channel quality indictor (CQI) reporting with precoding matrix indicator (PMI) frequency domain (FD) units. A user equipment (UE) may configured with a CSI reporting configuration. CQI and PMI may be configured with different FD unit sizes. The UE may determine which PMI FD units to use for calculating corresponding CQI FD units. PMI and CQI FD units may not be aligned. The UE may determine which PMI FD units to use for calculating CQI based on the alignment. PMI and CQI FD units may be configured using a separate bitmaps, a bitmap and ratio of the FD unit sizes, or a single bitmap. PMI and/or CQI FD units may start from a lowest FD unit index in the system bandwidth, or the lowest FD unit index within a configured bandwidth part (BWP).

    ENHANCED CSI PROCEDURES FOR FD-MIMO
    9.
    发明申请
    ENHANCED CSI PROCEDURES FOR FD-MIMO 审中-公开

    公开(公告)号：US20180083676A1

    公开(公告)日：2018-03-22

    申请号：US15563357

    申请日：2015-06-03

    申请人： Chao WEI ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

    发明人： Chao Wei ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL

    IPC分类号： H04B7/04 ,  H04B7/0452

    CPC分类号： H04B7/0478 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/0031

    摘要： Enhanced channel state information (CSI) procedures for full dimension-multiple input, multiple output (FD-MIMO) is discussed in which a number of CSI reference signal (CSI-RS) ports configured for a user equipment (UE) is determined. In response to the CSI-RS ports including both horizontal and vertical ports, the UE may determine a first precoding matrix from a plurality of precoding matrices constructed by a Kronecker product of a horizontal precoding matrix and a vertical precoding matrix. The UE selects a predetermined number of precoding vectors out of the first precoding matrix and generates a wideband precoding matrix, based on the selected predetermined number of precoding vectors. The UE reports one or more CSI reports, wherein the CSI reports includes at least one precoding matrix indicator (PMI) for the first precoding matrix and at least an indication of the selection of the predetermined number of precoding vectors.

    NUMBER OF NON-ZERO COEFFICIENTS REPORTING FOR TYPE II CSI CODEBOOK WITH FREQUENCY COMPRESSION
    10.
    发明申请
    NUMBER OF NON-ZERO COEFFICIENTS REPORTING FOR TYPE II CSI CODEBOOK WITH FREQUENCY COMPRESSION 有权

    公开(公告)号：US20220109480A1

    公开(公告)日：2022-04-07

    申请号：US17310748

    申请日：2020-02-22

    申请人： Chenxi HAO ,  Chao WEI ,  Yu ZHANG ,  Liangming WU ,  QUALCOMM Incorporated

    发明人： Chenxi HAO ,  Chao WEI ,  Yu ZHANG ,  Liangming WU

    IPC分类号： H04B7/06 ,  H04B7/0417

    摘要： Certain aspects of the present disclosure provide techniques for channel state information (CSI) reporting with frequency compression. A method that can be performed by a user equipment (UE) includes receiving a CSI report configuration. The CSI report configuration configures the UE for reporting precoding matrix information including, for each layer, a plurality of selected beams L, a plurality of frequency domain compression bases F for the L beams, and a subset of linear combination coefficients associated with the frequency domain compression bases and beams. The UE can determine a number of coefficients to report for a higher rank based on a configured maximum number of coefficients to report for a lower rank.