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公开(公告)号：US20210058919A1
公开(公告)日：2021-02-25
申请号：US16958448
申请日：2017-12-27
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: An aspect of a user terminal of the present invention includes a transmitting section that transmits a plurality of pieces of uplink control information (UCI) corresponding to a plurality of communications by using an uplink control channel or an uplink shared channel, and a control section that controls a transmission of at least a part of the plurality of pieces of UCI, based on a format of the uplink control channel or a maximum coding rate configured for the uplink shared channel when transmission timings of the plurality of pieces of UCI overlap each other.
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公开(公告)号：US20210058133A1
公开(公告)日：2021-02-25
申请号：US16958368
申请日：2017-12-27
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Chongning Na , Xiaolin Hou
Abstract: To appropriately configure frequency resources used for a beam failure recovery procedure, a user terminal includes: a transmitting section that transmits a beam failure recovery request when detecting a beam failure; a receiving section that receives a response to the beam failure recovery request; and a control section that controls determination of at least one of a frequency resource used to transmit the beam failure recovery request, and a frequency resource used to receive the response.
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公开(公告)号：US20210037519A1
公开(公告)日：2021-02-04
申请号：US16969084
申请日：2018-02-15
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata
Abstract: In future radio communication systems, uplink control channels will be transmitted properly. A user terminal has a receiving section that receives frequency hopping information, which indicates whether frequency hopping for an uplink control channel in one slot is enabled or not, and receives information that indicates the number of slots for the uplink control channel, and a control section that, when the number of slots is greater than one, controls repetition transmission of the uplink control channel, over a plurality of slots, by applying at least one of a spreading factor of a time-domain orthogonal cover code, a configuration of a demodulation reference code, and a base sequence, to the uplink control channel, based on the frequency hopping information.
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公开(公告)号：US20210036835A1
公开(公告)日：2021-02-04
申请号：US16766968
申请日：2018-11-26
Applicant: NTT DOCOMO, INC.
Inventor： Shohei Yoshioka , Kazuki Takeda , Satoshi Nagata , Lihui Wang
Abstract: To appropriately control CSI reporting even when CSI reporting is performed by applying a method different from a method used in existing LTE systems. A user terminal includes: a receiving section that receives downlink control information indicating activation or deactivation of semi-persistent channel state information; and a control section that controls transmission of the semi-persistent channel state information by making an interpretation of a certain bit field included in the downlink control information based on an RNTI applied to a CRC of the downlink control information.
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公开(公告)号：US10912043B2
公开(公告)日：2021-02-02
申请号：US16334879
申请日：2017-09-21
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Kazuaki Takeda , Satoshi Nagata , Lihui Wang , Qin Mu , Liu Liu
Abstract: The present invention is designed to properly control the transmission of UL signals transmitted in response to DL transmission, in future radio communication systems. A receiving section that receives downlink control information and downlink data, and a control section that controls the transmission of an acknowledgment signal in response to the downlink data, are provided, and the control section controls the timing for transmitting the delivery acknowledgment signal based on timing information included in the downlink control information.
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Patent Agency Ranking
公开(公告)号：US10911982B2
公开(公告)日：2021-02-02
申请号：US16490268
申请日：2017-03-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qun Zhao , Xiaohang Chen , Xiaolin Hou , Huiling Jiang
Abstract: The present invention is designed to prevent communication performance from dropping in long TTI when preemption of long TTI by short TTI occurs. According to one aspect of the present invention, a user terminal has a receiving section that receives downlink (DL) data based on downlink control information (DCI) in a first transmission time interval (TTI), a transmission section that transmits delivery acknowledgement information in response to the DL data, and a control section that controls timing of transmitting the delivery acknowledgement information when indication information regarding preemption of the first TTI by a second TTI shorter than the first TTI is received in the receiving section.
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公开(公告)号：US20210029733A1
公开(公告)日：2021-01-28
申请号：US16982218
申请日：2018-03-22
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Huiling Li , Lihui Wang , Chongning Na , Xin Wang , Xiaolin Hou
IPC: H04W72/12
Abstract: To appropriately control UL transmission such as a CSI reporting when performing communication by applying a different configuration from those of legacy LTE systems, a user terminal according to one aspect of the present disclosure includes: a transmission section that transmits one or more UL signals by using an uplink shared channel based on an instruction from a base station; and a control section that controls the transmission assuming that transmission durations of a plurality of UL signals do not overlap in a same symbol, or, when at least part of the transmission durations of the plurality of UL signals overlap in the same symbol, performs control to select and transmit the part of the UL signals.
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公开(公告)号：US20210028979A1
公开(公告)日：2021-01-28
申请号：US16980170
申请日：2018-03-13
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Hideaki Takahashi , Satoshi Nagata
Abstract: A terminal is disclosed including a receiver that receives configuration information comprising control resource set (CORESET) configuration information, the configuration information being used for configuring a cell-specific parameter for a downlink control channel; and a processor that determines a CORESET based on the CORESET configuration information. In other aspects, a radio communication method and a base station are also disclosed.
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公开(公告)号：US10887148B2
公开(公告)日：2021-01-05
申请号：US16324146
申请日：2017-08-02
Applicant: NTT DOCOMO, INC.
Inventor： Keisuke Saito , Kazuki Takeda , Satoshi Nagata
IPC: H04L27/26 , H04L25/02 , H04W72/04 , H04B7/0452
Abstract: A user terminal according to the present invention calculates a channel estimation value for each subcarrier by using a demodulation RS, calculates the time fluctuation amount of each symbol by using a correction RS mapped on a symbol following a symbol on which the modulation RS is mapped, corrects the channel estimation value for the subcarrier of a resource element on which a data signal to be demodulated is mapped, by using the time fluctuation amount of the symbol of the resource element, and calculates the channel estimation value of the resource element.
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公开(公告)号：US10862655B2
公开(公告)日：2020-12-08
申请号：US16091854
申请日：2017-04-06
Applicant: NTT DOCOMO, INC.
Inventor： Keisuke Saito , Yousuke Sano , Kazuki Takeda , Satoshi Nagata
Abstract: The present invention is designed to reduce the impact which the variation of the amount of overhead within a subframe has upon the throughput of data channels. A user terminal, according to the present invention, has a transmitting/receiving section that receives a downlink (DL) signal and/or transmits an uplink (UL) signal in a subframe, and a control section that controls transport block sizes (TBSs) of the DL signal and/or the UL signal. The user terminal controls the TBSs based on overhead in the subframe or a desired coding rate.
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