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公开(公告)号：US11388704B2
公开(公告)日：2022-07-12
申请号：US15573965
申请日：2016-05-13
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Kazuyuki Shimezawa , Naoki Kusashima , Shoichi Suzuki , Alvaro Ruiz Delgado
Abstract: A terminal device (UE) includes a reception unit configured to monitor an enhanced physical downlink control channel (EPDCCH) on a Serving cell with frame structure type 3. In a case that the terminal device detects downlink control information (DCI) in a subframe, the terminal device assumes a configuration of OFDM symbols according to a field in the DCI in the subframe. The OFDM symbols are used for downlink transmission. A demodulation reference signal (DMRS) associated with the EPDCCH is mapped in the subframe according to the configuration of the OFDM symbols.
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公开(公告)号：US10420144B2
公开(公告)日：2019-09-17
申请号：US15750134
申请日：2016-08-02
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Naoki Kusashima , Kazuyuki Shimezawa , Wataru Ouchi , Alvaro Ruiz Delgado
Abstract: 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.
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公开(公告)号：US10341958B2
公开(公告)日：2019-07-02
申请号：US15311929
申请日：2015-05-20
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Naoki Kusashima , Toshizo Nogami , Wataru Ouchi , Kazuyuki Shimezawa , Takashi Hayashi , Alvaro Ruiz Delgado , Kimihiko Imamura
IPC: H04W52/14 , H04W52/30 , H04W74/08 , H04W52/34 , H04W52/16 , H04W52/36 , H04W76/15 , H04L5/14 , H04W84/04 , H04W52/28 , H04W52/40 , H04W52/50
Abstract: There is provided a terminal device that communicates with a base station apparatus. The terminal device includes means for setting a maximum output power value in uplink transmission to a first serving cell group based on a maximum output power value of the terminal device and an output power value for the first serving cell group in a case where the uplink transmission to the first serving cell group overlaps with uplink transmission to a second serving cell group in a certain timing, and means for setting a maximum output power value in the uplink transmission to the second serving cell group based on the maximum output power value of the terminal device, the output power value for the first serving cell group and a value for guaranteeing the uplink transmission to the first serving cell group.
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公开(公告)号：US10171220B2
公开(公告)日：2019-01-01
申请号：US15517275
申请日：2015-10-16
Applicant: Sharp Kabushiki Kaisha
Inventor： Naoki Kusashima , Kazuyuki Shimezawa , Alvaro Ruiz Delgado , Kimihiko Imamura , Wataru Ouchi , Takashi Hayashi
Abstract: Provided is a terminal configured to communicate with a base station with an FDD cell and a TDD cell. The terminal includes a reception unit configured to perform reception on a PDCCH transmitted in a DCI format. When a TDD cell is configured as a primary cell for the terminal, a first uplink reference UL-DL configuration used for determination of the interval between the reception of the PDCCH indicating a PUSCH transmission and the PUSCH transmission is configured for the TDD cell, and a second uplink reference UL-DL configuration used for determination of whether to use a DAI included in the DCI format of the PDCCH indicating the PUSCH transmission is configured in the FDD cell.
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公开(公告)号：US10165503B2
公开(公告)日：2018-12-25
申请号：US15321273
申请日：2015-06-08
Applicant: Sharp Kabushiki Kaisha
Inventor： Takashi Hayashi , Toshizo Nogami , Kazuyuki Shimezawa , Wataru Ouchi , Naoki Kusashima , Alvaro Ruiz Delgado
Abstract: In a radio communication system in which a supplemental uplink-downlink configuration can be used, a mobile station device and a base station device efficiently communicate with each other. A mobile station device communicates in prescribed bands. This mobile station device transmits information related to support of a specific uplink-downlink configuration.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20150282144A1
公开(公告)日：2015-10-01
申请号：US14438945
申请日：2013-10-18
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Hiromichi Tomeba , Takashi Onodera , Alvaro Ruiz Delgado , Minoru Kubota
IPC: H04W72/04
CPC classification number: H04W72/046 , H04B7/0456 , H04B7/0617 , H04B7/0619 , H04B7/0697 , H04W72/0453 , H04W88/08
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US10582481B2
公开(公告)日：2020-03-03
申请号：US15573760
申请日：2016-05-13
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Kazuyuki Shimezawa , Naoki Kusashima , Shoichi Suzuki , Alvaro Ruiz Delgado
Abstract: 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.
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公开(公告)号：US10524243B2
公开(公告)日：2019-12-31
申请号：US15546866
申请日：2016-01-19
Applicant: Sharp Kabushiki Kaisha
Inventor： Kazuyuki Shimezawa , Naoki Kusashima , Alvaro Ruiz Delgado , Kimihiko Imamura , Shoichi Suzuki
Abstract: A cell using an unallocated frequency band or a shared frequency band is efficiently controlled. A terminal device includes a reception unit configured to monitor a physical downlink control channel (PDCCH) in a secondary cell having a frame structure type 3. In the secondary cell having the frame structure type 3, upon a first possible starting position of a downlink transmission and a second possible starting position of the downlink transmission being indicated by a higher layer, the terminal device monitors both a first set of candidates for the PDCCH and a second set of candidates for the PDCCH in a predetermined subframe. The first set of candidates is assumed to start on the basis of the first possible starting position, and the second set of candidates is assumed to start on the basis of the second possible starting position.
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公开(公告)号：US10187136B2
公开(公告)日：2019-01-22
申请号：US15304882
申请日：2015-04-21
Applicant: Sharp Kabushiki Kaisha
Inventor： Kazuyuki Shimezawa , Wataru Ouchi , Naoki Kusashima , Takashi Hayashi , Alvaro Ruiz Delgado , Toshizo Nogami , Kimihiko Imamura
Abstract: 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.
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公开(公告)号：US09673881B2
公开(公告)日：2017-06-06
申请号：US14434161
申请日：2013-10-01
Applicant: Sharp Kabushiki Kaisha
Inventor： Hiromichi Tomeba , Takashi Onodera , Alvaro Ruiz Delgado , Minoru Kubota
IPC: H04W4/00 , H04B7/06 , H04B7/0417 , H04B7/0452 , H04B7/0456 , H04B7/08 , H04W72/04
CPC classification number: H04B7/0626 , H04B7/0417 , H04B7/0452 , H04B7/0456 , H04B7/0845 , H04W72/0406
Abstract: In a wireless communication system that performs non-linear pre-coding, degradation in transmission performance due to a feedback error is improved. The terminal device according to the present invention is a terminal device which receives radio signals that are space-multiplexed and on which non-linear pre-coding is performed, from a base station device including multiple antennas, the terminal device including: a channel state estimator 53 that estimates channel state information on a channel between the terminal device and the base station device; a terminal antenna module 51 that acquires a linear filter that is calculated in the base station device; and a channel equalization module 57 that performs channel equalization processing on the radio signals that are received at a first point in time, based on the channel state information at a second point in time that precedes the first point in time and on the linear filter.
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