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公开(公告)号：US20200288334A1
公开(公告)日：2020-09-10
申请号：US16646066
申请日：2017-09-11
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Chongning Na , Min Liu
Abstract: The present disclosure is designed to properly control RLM when beam recovery procedures are expected to be executed. In accordance with one aspect of the present invention, a user terminal has a receiving section that receives information about a hypothetical downlink control channel, and a control section that controls, based on the information, monitoring of radio link quality of a downlink signal in a first set, which is assumed to be quasi-co-located (in QCL) with a demodulation reference signal for a downlink control channel, and/or radio link quality of a downlink signal in a second set, which is configured by a radio base station.
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公开(公告)号：US20200287688A1
公开(公告)日：2020-09-10
申请号：US16645084
申请日：2017-09-07
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata
Abstract: When a UL control channel of a time duration shorter than those of legacy LTE systems (e.g., LTE Rel. 8 to 13) is introduced, a UL data channel is appropriately transmitted while improving resource use efficiency. A user terminal according to the present invention includes: a receiving section that receives Downlink Control Information (DCI); and a control section that controls transmission of an Uplink (UL) data channel in a first resource indicated by the DCI, and a second resource for an Uplink (UL) control channel is reserved in at least part of the first resource such that the UL data channel is not transmitted by a non-contiguous frequency resource.
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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
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.
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公开(公告)号：US10743304B2
公开(公告)日：2020-08-11
申请号：US15742123
申请日：2016-07-06
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Tooru Uchino , Satoshi Nagata
Abstract: According to the present invention, communication is carried out using a transmission time interval (TTI) that is suitable for a future radio communication system. A user terminal of the present invention includes a receiving section configured to receive a downlink signal; a transmitting section configured to transmit an uplink signal; and a control section configured to control a transmission time interval (TTI) used in reception of the downlink signal and/or used in transmission of the uplink signal. The control section sets a second transmission time interval (TTI) that is shorter than a 1 ms first transmission time interval (TTI).
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公开(公告)号：US20200245336A1
公开(公告)日：2020-07-30
申请号：US16753198
申请日：2017-10-06
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata
Abstract: A user terminal according to the present invention includes: a transmitting section that transmits uplink control information (UCI) using an uplink control channel of a first duration and/or an uplink control channel of a second duration longer than the first duration; a receiving section that receives information related to fallback of the uplink control channel; and a control section that controls a format of the uplink control channel to be used to transmit the UCI, based on information related to the fallback.
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Patent Agency Ranking
公开(公告)号：US20200236698A1
公开(公告)日：2020-07-23
申请号：US16489945
申请日：2017-03-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang
Abstract: The present invention is designed so that DL data can be received, and HARQ-ACK can be transmitted, properly, even when different data scheduling methods than existing LTE systems are used. According to one aspect of the present invention, a user terminal has a receiving section that receives DL control information, and a control section that controls receipt of DL data scheduled by the DL control information, and transmission of delivery acknowledgment information in response to the DL data, and the DL control information indicates a relationship between the timing of receiving the DL control information, the timing of receiving the DL data, and the timing of transmitting the delivery acknowledgment information, and the control section determines, based on the DL control information, the timing of receiving the DL data and the timing of transmitting the delivery acknowledgment information.
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公开(公告)号：US20200236697A1
公开(公告)日：2020-07-23
申请号：US16334404
申请日：2017-09-21
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Kazuaki Takeda , Satoshi Nagata , Lihui Wang , Qin Mu
Abstract: The present invention is designed so as to allow efficient use of radio resources between DL control channels and DL data channels. According to the present invention, a user terminal has a receiving section that monitors a plurality of candidate resources in a downlink (DL) control channel, and receives downlink control information (DCI) mapped to at least one of the plurality of candidate resources, and a control section that controls receipt of the DL data channel based on the DCI, wherein the control section selects the plurality of candidate resources based on a higher layer parameter.
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公开(公告)号：US20200220647A1
公开(公告)日：2020-07-09
申请号：US16649026
申请日：2018-09-18
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: The present invention is designed to reduce the decrease in communication throughput and the like in UCI on PUSCH. According to one example of the present disclosure, a user terminal has a receiving section that receives a transmission command for an uplink shared channel, a transmitting section that transmits uplink data and uplink control information in the uplink shared channel, and a control section that exerts control so that a puncturing process and/or a rate matching process is applied to the uplink data based on a timing the transmission command is received.
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129.发明授权公开(公告)号：US10708948B2
公开(公告)日：2020-07-07
申请号：US16069579
申请日：2017-02-03
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Kazuki Takeda , Satoshi Nagata
Abstract: An object is to provide proper resource assignment in communication using an unlicensed band. A user terminal includes: a transmitting section that transmits a UL signal; and a control section that controls the transmitting section to transmit a physical uplink shared channel (PUSCH) and a measurement reference signal (sounding reference signal (SRS)) in accordance with different grants included in a DL signal. The control section transmits the physical uplink shared channel following transmission of the measurement reference signal.
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公开(公告)号：US20200169903A1
公开(公告)日：2020-05-28
申请号：US16612579
申请日：2017-05-12
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang
Abstract: In order to prevent a decline in the quality of communication even when contention-based UL transmission is employed, a user terminal, according to one aspect of the present invention, has a transmission section that transmits UL data without a UL transmission indication from a radio base station, and a control section that controls reporting of a channel state measurement result and/or transmission of a reference signal for measuring channel quality, and the control section exerts control so that information related to the channel state measurement result and/or the reference signal for measuring channel quality are transmitted with the UL data at the same timing.
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