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    METHOD AND DEVICE FOR TRANSMITTING REFERENCE SIGNALS
    43.
    发明申请
    METHOD AND DEVICE FOR TRANSMITTING REFERENCE SIGNALS 有权

    公开(公告)号：US20210297202A1

    公开(公告)日：2021-09-23

    申请号：US17266800

    申请日：2018-08-09

    Applicant: NTT DOCOMO, INC.

    Inventor： Wenjia Liu ,  Runxin Wang ,  Xiaolin Hou ,  Xin Wang

    IPC: H04L5/00 ,  H04W72/04 ,  H04W72/12

    Abstract: A method and device for transmitting reference signals are provided in the present disclosure, where the method for transmitting reference signals is performed by a user terminal and time-frequency resources for the user terminal are divided into multiple groups of time-frequency resources. The method includes: selecting a reference signal port for each group of time-frequency resources from candidate reference signal ports; and transmitting reference signals by using the reference signal port corresponding to each group of time-frequency resources.

    METHOD FOR SIGNAL TRANSMISSION, AND CORRESPONDING USER TERMINALS AND BASE STATIONS
    45.
    发明申请
    METHOD FOR SIGNAL TRANSMISSION, AND CORRESPONDING USER TERMINALS AND BASE STATIONS 有权

    公开(公告)号：US20210168818A1

    公开(公告)日：2021-06-03

    申请号：US17047934

    申请日：2018-05-29

    Applicant: NTT DOCOMO, INC.

    Inventor： Xin Wang ,  Min Liu ,  Jing Wang ,  Xiaolin Hou

    IPC: H04W72/08 ,  H04L5/00 ,  H04B7/0452

    Abstract: Provided by the present disclosure are a method used for signal transmission, and corresponding user terminals and base stations. The method performed by a user terminal includes: receiving indication information for a spatial-domain reception parameter transmitted by a base station; determining a first spatial-domain reception parameter according to the indication information for a spatial-domain reception parameter, so that the user terminal receives downlink data signals through the first spatial domain reception parameter. The method performed by a base station includes: generating indication information for a spatial-domain reception parameter; and transmitting the indication information for a spatial-domain reception parameter to a user terminal, so that the user terminal determines a first spatial-domain reception parameter according to the indication information for a spatial-domain reception parameter.

    USER TERMINAL AND RADIO COMMUNICATION METHOD
    46.
    发明申请
    USER TERMINAL AND RADIO COMMUNICATION METHOD 审中-公开

    公开(公告)号：US20200295905A1

    公开(公告)日：2020-09-17

    申请号：US16650929

    申请日：2017-09-29

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Yuichi Kakishima ,  Huiling Li ,  Chongning Na ,  Lihui Wang ,  Xin Wang

    IPC: H04L5/00

    Abstract: To appropriately control UL transmission such as a CSI reporting when communication is performed by applying a different configuration from those of legacy LTE systems, one aspect of a user terminal according to the present invention includes: a transmitting section that transmits first Channel State Information (CSI) and second CSI of different information types to be reported, by using an uplink control channel and/or an uplink shared channel based on timings respectively configured by a base station; and a control section that, when transmission timings of the first CSI and the second CSI overlap, performs control to transmit both or one of the first CSI and the second CSI.

    TERMINAL AND BASE STATION IN COMMUNICATION SYSTEM
    49.
    发明公开
    TERMINAL AND BASE STATION IN COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：US20240048190A1

    公开(公告)日：2024-02-08

    申请号：US18258633

    申请日：2020-12-29

    Applicant: NTT DOCOMO, INC.

    Inventor： Wenjia Liu ,  Xiaolin Hou ,  Xin Wang ,  Yuki Matsumura ,  Nadisanka Rupasinghe

    IPC: H04B7/0417 ,  H04B7/0456

    CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04B7/063

    Abstract: The present disclosure provides a terminal and a base station in a communication system. The terminal includes: a receiving unit configured to receive, from a base station, first information indicating a first parameter, where the first parameter indicates a number of candidate transform domain vectors regarding a subcarrier-level precoding matrix, and a value of the first parameter is smaller than a number of subcarriers of the communication system; the receiving unit being further configured to receive, from the base station, second information indicating a second parameter, where the second parameter indicates a number of transform domain vectors used to determine the subcarrier-level precoding matrix; and a control unit configured to determine, from the number of candidate transform domain vectors indicated by the first information, the number of transform domain vectors indicated by the second information.

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