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    METHOD AND DEVICE FOR TRAINING DOWNLINK BEAMS
    41.
    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.

    Method and apparatus for phase compensation using phase-tracking reference signal
    46.
    发明授权
    Method and apparatus for phase compensation using phase-tracking reference signal 有权

    公开(公告)号：US10862644B2

    公开(公告)日：2020-12-08

    申请号：US16349014

    申请日：2017-12-28

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Hui Li ,  Qiubin Gao ,  Rakesh Tamrakar ,  Xin Su ,  Runhua Chen ,  Qiuping Huang ,  Chuanjun Li ,  Mengjun Wang

    IPC: H04L5/00 ,  H04B7/0456

    Abstract: The present disclosure provides a reference signal transmission method, a transmitter and a receiver. The reference signal transmission method includes: precoding, by a transmitter, a data stream for user data through a second precoding matrix so as to acquire D virtual data streams; precoding, by the transmitter, the D virtual data streams through a first precoding matrix, and transmitting the D precoded virtual data streams to a receiver via T antenna groups, each antenna group including one or more antenna units or antenna ports having a same phase noise; transmitting, by the transmitter, D demodulation reference signals to the receiver; and transmitting, by the transmitter, M phase-tracking reference signals to the receiver, the M phase-tracking reference signals being adopted to track phase changes in the T antenna groups caused by one or more phase noise sources.

    Reference signal mapping method and device
    48.
    发明授权
    Reference signal mapping method and device 有权

    公开(公告)号：US10812235B2

    公开(公告)日：2020-10-20

    申请号：US16337936

    申请日：2017-09-27

    Applicant: China Academy of Telecommunications Technology

    Inventor： Hui Li ,  Runhua Chen ,  Qiubin Gao ,  Tamrakar Rakesh ,  Qiuping Huang

    IPC: H04L5/00 ,  H04L27/26

    Abstract: Disclosed are a reference signal mapping method and device, used for realizing a CSI-RS mapping of 16 or more ports, so as to realize a CSI-RS transmission of 16 or more ports. The method comprises: according to an N port reference signal pattern, determining that a channel state information reference signal (CSI-RS) is mapped on a resource unit RE, N being an integer greater than 16, wherein, an RE position, having one N port CSI-RS of the N port reference signal pattern mapped thereto, is determined according to an RE position having a CSI-RS in a plurality of groups of 8 port reference signal patterns mapped thereto, each S port in the N port is multiplexed with S code words of 8 code words using an 8-bit orthogonal spreading code, and the 8 port reference signal pattern is an 8 port CSI-RS pattern defined by 3GPP Rel-13; and performing resource mapping on the CSI-RS according to the determined RE.

    Channel state information feedback and receiving method and device
    50.
    发明授权
    Channel state information feedback and receiving method and device 有权

    公开(公告)号：US10396875B2

    公开(公告)日：2019-08-27

    申请号：US15749122

    申请日：2016-07-21

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

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

    IPC: H04W24/10 ,  H04B7/06 ,  H04L1/00 ,  H04L5/00

    Abstract: The present application provides a channel state information (CSI) feedback and receiving method and device. The CSI feedback method by a UE comprises: determining, according to an indication of a base station, at least one CSI feedback configuration group configured by the base station, wherein each CSI feedback configuration group comprises at least one CSI feedback configuration; and upon determination of a need to report CSI, reporting, via a PUCCH or PUSCH, to the base station CSI acquired based on a first CSI feedback configuration, wherein the first CSI feedback configuration is a CSI feedback configuration determined, according to location information of a CSI feedback configuration in the most recent report or location information of a CSI feedback configuration indicated by the base station, from a corresponding CSI feedback configuration group by the UE. The present application supports independent reporting of location information and corresponding CSI, thus improving the detection performance of such information, and further supports a base station to acquire CSI corresponding to a specified CSI feedback configuration, thus enabling more flexible downlink scheduling and transmission.

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