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    Method and device for transmitting feedback information
    21.
    发明授权
    Method and device for transmitting feedback information 有权

    公开(公告)号：US10778292B2

    公开(公告)日：2020-09-15

    申请号：US16082908

    申请日：2017-02-21

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Qiubin Gao ,  Wenhong Chen ,  Hui Li ,  Runhua Chen ,  Rakesh Tamrakar

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

    Abstract: The present application provides a method and a device for transmitting feedback information. The method includes: determining, by a transmitting terminal, a first code book in accordance with a channel measurement result, precoding matrices included in the first code book being obtained through transformation of a same construction matrix; calculating, by the transmitting terminal, to obtain a first CQI in accordance with all or part of the precoding matrices in the first code book; and transmitting, by the transmitting terminal, first indication information for indicating the first code book and second indication information for indicating the first CQI to a receiving terminal.

    Reference signal mapping method and device
    22.
    发明授权
    Reference signal mapping method and device 有权

    公开(公告)号：US10735158B2

    公开(公告)日：2020-08-04

    申请号：US15747753

    申请日：2016-06-20

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Rakesh Tamrakar ,  Qiubin Gao ,  Runhua Chen ,  Wenhong Chen ,  Hui Li

    IPC: H04L5/00 ,  H04W72/04

    Abstract: A reference signal mapping method and a reference signal mapping device are provided. The reference signal mapping method includes steps of: determining a position of a RE to which a CSI-RS has been mapped in accordance with an N-port reference signal pattern, N being equal to 12 or 16; and performing a resource mapping operation on the CSI-RS in accordance with the determined position of the RE. The position of the RE to which the CSI-RS has been mapped in the N-port reference signal pattern being determined in accordance with a position of the RE to which the CSI-RS has been mapped in one or more of a 2-port reference signal pattern, a 4-port reference signal pattern and an 8-port reference signal pattern. As a result, it is able to achieve the 12-port or 16-port CSI-RS mapping, thereby to achieve the 12-port or 16-port CSI-RS transmission.

    Data transmission method and data transmisiion device
    24.
    发明授权
    Data transmission method and data transmisiion device 有权

    公开(公告)号：US10205500B2

    公开(公告)日：2019-02-12

    申请号：US15751460

    申请日：2016-08-08

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Hui Li ,  Qiubin Gao ,  Runhua Chen ,  Wenhong Chen ,  Rakesh Tamrakar

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

    Abstract: A precoding matrix determination method and a precoding matrix determination device are provided. The precoding matrix determination method includes: dividing each of the groups of vertical-dimension beams into a plurality of subgroups of vertical-dimension beams, and dividing each of the groups of horizontal-dimension beams into a plurality of subgroups of horizontal-dimension beams; determining a first stage codebook in accordance with a Kronecker product of each subgroup of vertical-dimension beams acquired by dividing each of the groups of vertical-dimension beams and each subgroup of horizontal-dimension beams acquired by dividing each of the groups of horizontal-dimension beams; and selecting a plurality of columns of beams from the determined first stage codebook using a second stage codebook, and performing phase adjustment to determine a precoding matrix.

    METHOD AND DEVICE FOR TRAINING DOWNLINK BEAMS
    27.
    发明申请
    METHOD AND DEVICE FOR TRAINING DOWNLINK BEAMS 有权

    公开(公告)号：US20210344407A1

    公开(公告)日：2021-11-04

    申请号：US16324880

    申请日：2017-08-03

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Qiuping HUANG ,  Qiubin GAO ,  Runhua Chen ,  Hui Li ,  Rakesh Tamrakar ,  Yang Song ,  Xin Su ,  Yu Yang ,  Mengjun Wang ,  Chuanjun Li

    IPC: H04B7/08 ,  H04B7/0408 ,  H04B7/06

    Abstract: A method and a device for transmitting downlink reception beam training signals are provided. The method at the second device side includes: receiving a downlink reception beam training trigger notification message sent by a first device; receiving downlink reception beam training signals sent by the first device, based on the downlink reception beam training trigger notification message; and performing a downlink reception beam training based on the downlink reception beam training signals. The method at the first device side includes: sending a downlink reception beam training trigger notification message to a second device when determining that a downlink reception beam training is to be performed for the second device, and sending downlink reception beam training signals to the second device after the downlink reception beam training trigger notification message is sent to the second device.

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