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    Terminal device, base station device, and communication method
    2.
    发明授权
    Terminal device, base station device, and communication method 有权

    公开(公告)号：US10420144B2

    公开(公告)日：2019-09-17

    申请号：US15750134

    申请日：2016-08-02

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Naoki Kusashima ,  Kazuyuki Shimezawa ,  Wataru Ouchi ,  Alvaro Ruiz Delgado

    IPC分类号： H04W72/04 ,  H04W74/08 ,  H04W16/14

    摘要： To efficiently control a cell by using a non-allocated frequency band or a shared frequency band. The terminal device includes a reception unit configured to receive a PDCCH, a transmission unit configured to transmit a PUSCH in a serving cell, and a CCA check unit configured to perform either first LBT for performing a CCA check a number of times based on a random number before a subframe for which a transmission of the PUSCH is indicated or second LBT for performing a CCA check only once. The terminal device switches between the first LBT and the second LBT, based on a prescribed condition.

    BASE STATION DEVICE, TERMINAL DEVICE AND WIRELESS COMMUNICATION SYSTEM
    6.
    发明申请
    BASE STATION DEVICE, TERMINAL DEVICE AND WIRELESS COMMUNICATION SYSTEM 审中-公开
    基站设备，终端设备和无线通信系统

    公开(公告)号：US20150282144A1

    公开(公告)日：2015-10-01

    申请号：US14438945

    申请日：2013-10-18

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Hiromichi Tomeba ,  Takashi Onodera ,  Alvaro Ruiz Delgado ,  Minoru Kubota

    IPC分类号： H04W72/04

    CPC分类号： H04W72/046 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0697 ,  H04W72/0453 ,  H04W88/08

    摘要： Degradation in transmission performance due to a feedback error is lessened in a wireless communication system that performs non-linear pre-coding. Provided is a base station device according to the present invention, which includes multiple antennas and which performs non-linear pre-coding and spatial multiplexing on signals destined for multiple terminal devices, and thus performs wireless communication, the base station device including: a channel state information acquisition module 33 that acquires channel state information between the base station device and the terminal device; a perturbation vector search module 27-2 that searches for a perturbation vector which is received by each of the multiple terminal devices and which suppresses inter-user interference, using a linear filter that is generated based on the channel state information; and a transmit signal generation module 27-3 that calculates a transmit signal vector based on the generated linear filter, the perturbation vector and a transmit data vector.

    摘要翻译： 在执行非线性预编码的无线通信系统中，由于反馈误差导致的传输性能的降低得以减弱。 本发明提供了一种基站装置，其包括多个天线，对发往多个终端装置的信号进行非线性预编码和空间复用，从而进行无线通信，所述基站装置包括：信道 状态信息获取模块33，其获取基站装置与终端装置之间的信道状态信息; 扰动矢量搜索模块27-2，使用基于信道状态信息生成的线性滤波器来搜索由多个终端设备中的每一个接收并且抑制用户间干扰的扰动向量; 以及基于生成的线性滤波器，扰动矢量和发送数据矢量来计算发送信号矢量的发送信号生成模块27-3。

    Terminal device, base station device, and communication method
    7.
    发明授权
    Terminal device, base station device, and communication method 有权

    公开(公告)号：US10582481B2

    公开(公告)日：2020-03-03

    申请号：US15573760

    申请日：2016-05-13

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Kazuyuki Shimezawa ,  Naoki Kusashima ,  Shoichi Suzuki ,  Alvaro Ruiz Delgado

    IPC分类号： H04W72/04 ,  H04W16/14 ,  H04W72/12 ,  H04L5/00 ,  H04W72/14 ,  H04L27/00

    摘要： A terminal device (UE) includes a reception unit configured to monitor multiple enhanced physical downlink control channels (EPDCCHs) on a Secondary cell. In a case that the Secondary cell is a licensed assisted access Secondary cell and a higher layer parameter of the Secondary cell indicates that a starting position of downlink transmission is either a Subframe boundary or a slot boundary, the terminal device is configured to monitor both a first set of UE-specific search space candidates in a first EPDCCH and a second set of UE-specific search space candidates in a second EPDCCH, in a subframe. A starting symbol for the first EPDCCH is specified by an index in a first slot in the subframe. A starting symbol for the second EPDCCH is specified by the index in a second slot in the subframe.

    Terminal device, base station device, and communication method
    9.
    发明授权
    Terminal device, base station device, and communication method 有权

    公开(公告)号：US10187136B2

    公开(公告)日：2019-01-22

    申请号：US15304882

    申请日：2015-04-21

    申请人： Sharp Kabushiki Kaisha

    发明人： Kazuyuki Shimezawa ,  Wataru Ouchi ,  Naoki Kusashima ,  Takashi Hayashi ,  Alvaro Ruiz Delgado ,  Toshizo Nogami ,  Kimihiko Imamura

    IPC分类号： H04W4/00 ,  H04B7/06 ,  H04B17/345 ,  H04L5/00 ,  H04W72/04 ,  H04W52/02 ,  H04W36/00

    摘要： There are provided terminal devices (1A to 1C) capable of efficiently performing communication in a communication system in which a base station device (3) and the terminal devices (1A to 1C) communicate with each other. The terminal devices (1A to 1C) that communicate with the base station device (3) include a reception unit that receives notification of a cell state of the base station device (3), a channel state information generation unit that generates channel state information based on channel measurement acquired based on a channel state information reference signal and interference measurement acquired based on a channel state information interference measurement resource, and a transmission unit that transmits the channel state information. The channel state information generation unit performs the channel measurement or the interference measurement based on a subframe in consideration of the cell state.