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    TERMINAL FOR D2D COMMUNICATION
    2.
    发明申请
    TERMINAL FOR D2D COMMUNICATION 有权

    公开(公告)号：US20210028896A1

    公开(公告)日：2021-01-28

    申请号：US17065870

    申请日：2020-10-08

    Applicant: NTT DOCOMO, INC.

    Inventor： Shimpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao

    IPC: H04L5/00 ,  H04W92/18 ,  H04W72/04 ,  H04W4/40 ,  H04J11/00 ,  H04W72/10

    Abstract: A terminal is disclosed that includes a first transmitter configured to transmit control information for D2D by using a physical control channel for D2D multiplexed with a physical data channel for D2D in a frequency domain and a second transmitter configured to transmit data corresponding to the control information for D2D by using the physical data channel for D2D, where a plurality of the control information for D2Ds are mapped in a wireless resource unit. In other aspects, another terminal is also disclosed.

    USER EQUIPMENT AND COMMUNICATION METHOD
    3.
    发明申请
    USER EQUIPMENT AND COMMUNICATION METHOD 审中-公开

    公开(公告)号：US20200322977A1

    公开(公告)日：2020-10-08

    申请号：US16303470

    申请日：2017-03-31

    Applicant: NTT DOCOMO, INC.

    Inventor： Shimpei Yasukawa ,  Satoshi Nagata ,  Riichi Kudou

    IPC: H04W72/12 ,  H04W52/38

    Abstract: User equipment of a radio communication system that supports a plurality of types of subframes that can be configured to be any of an uplink, a downlink, or a sidelink, the user equipment including an acquisition unit that acquires type information for notifying a type of a subframe; a transmitter that transmits a sidelink signal according to a transmission and reception operation corresponding to the subframe type notified via the type information when transmitting the sidelink signal; and a receiver that receives the sidelink signal according to a transmission and reception operation corresponding to the subframe type notified via the type information when receiving the sidelink signal.

    User terminal and radio communication method
    4.
    发明授权
    User terminal and radio communication method 有权

    公开(公告)号：US10750527B2

    公开(公告)日：2020-08-18

    申请号：US16483334

    申请日：2018-02-02

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuki Takeda ,  Shimpei Yasukawa ,  Satoshi Nagata ,  Xiaohang Chen ,  Qun Zhao

    IPC: H04W72/12 ,  H04W72/04 ,  H04W52/54

    Abstract: The present invention is designed to provide a user terminal and a radio communication method, whereby adequate communication can be performed when contention-based UL transmission is employed. A user terminal according to the present invention has a transmission section that transmits UL data and a reference signal without a UL transmission command from a radio base station, and control section that controls transmission of the UL data and the reference signal, and the control section applies a reference signal that can identify the user terminal, as the reference signal, and controls transmission of the UL data and the reference signal by using predetermined resources that are configured in advance.

    Radio communication system, radio communication method, radio base station and user terminal
    5.
    发明授权
    Radio communication system, radio communication method, radio base station and user terminal 有权

    公开(公告)号：US10512049B2

    公开(公告)日：2019-12-17

    申请号：US15661244

    申请日：2017-07-27

    Applicant: NTT DOCOMO, INC.

    Inventor： Shimpei Yasukawa ,  Satoshi Nagata ,  Yoshihisa Kishiyama ,  Hiroyuki Ishii

    IPC: H04W56/00 ,  H04W74/08

    Abstract: The present invention is designed to establish synchronization between transmission points when downlink signals are transmitted from a plurality of transmission points to a user terminal. A radio communication system has a first radio base station that forms a first cell, a second radio base station that forms a second cell, which is placed on the area of the first cell in an overlapping manner, and a user terminal that is capable of carrying out radio communication with the first radio base station and the second radio base station, and the second radio base station has a receiving section that receives synchronization correction information, which is for establishing synchronization with a synchronization target, from the user terminal, and a synchronization correction section that corrects synchronization based on the synchronization correction information.

    User equipment and D2D communication method
    6.
    发明授权
    User equipment and D2D communication method 有权

    公开(公告)号：US10412732B2

    公开(公告)日：2019-09-10

    申请号：US15565258

    申请日：2016-04-07

    Applicant: NTT DOCOMO, INC.

    Inventor： Shimpei Yasukawa ,  Hiroki Harada ,  Satoshi Nagata

    IPC: H04W4/00 ,  H04W72/04 ,  H04W52/02 ,  H04W24/08 ,  H04W92/18

    Abstract: User equipment to be used in a communication system supporting D2D communication includes a setting unit that receives D2D gap configuration information from a base station, and sets a D2D gap based on the D2D gap configuration information; and a communication unit that monitors a D2D signal in a different frequency using the D2D gap, wherein the D2D gap that is set based on the D2D gap configuration information is a time interval with a predetermined time length in a time domain, the time interval being allocated based on a time hopping pattern.

    User terminal, radio base station and radio communication method
    8.
    发明授权
    User terminal, radio base station and radio communication method 有权

    公开(公告)号：US10057023B2

    公开(公告)日：2018-08-21

    申请号：US14889378

    申请日：2014-04-14

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuki Takeda ,  Shimpei Yasukawa ,  Satoshi Nagata

    IPC: H04L5/00 ,  H04W72/04 ,  H04L1/18 ,  H04W16/32

    CPC classification number: H04L5/0035 ,  H04L1/18 ,  H04L5/00 ,  H04L5/001 ,  H04L5/0053 ,  H04W16/32 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/042

    Abstract: The present invention is designed to enable adequate feedback on the uplink even when CA and CoMP are employed between a plurality of radio base stations (inter-eNB CoMP/CA). A receiving section that receives downlink signals from a first radio base station that forms a first cell and a second radio base station that forms a second cell, a generating section that generates a feedback signal in response to the downlink signal from each radio base station, and a control section that assigns the feedback signal in response to the downlink signal from the first radio base station to an uplink control channel and/or an uplink shared channel on the first cell depending on whether or not there is a UL grant, and assigns the feedback signal in response to the downlink signal from the second radio base station to the uplink shared channel on the first cell or the second cell regardless of whether or not there is the UL grant, are provided in a user terminal.

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