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公开(公告)号：US20200280970A1
公开(公告)日：2020-09-03
申请号：US16763141
申请日：2017-11-16
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
IPC: H04W72/04
Abstract: A user terminal according to one aspect of the present disclosure includes a receiving section that monitors a control resource set (CORESET) associated with an active bandwidth part (BWP), and a control section that determines a CORESET to monitor in a period during switching the active BWP from a first BWP to a second BWP. According to one aspect of the present disclosure, reduction in communication throughput and the like can be suppressed even if control based on BWPs is performed.
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公开(公告)号：US20200100240A1
公开(公告)日：2020-03-26
申请号：US16495479
申请日：2017-03-23
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou , Huiling Jiang
Abstract: In order to support the transmission of uplink control information adequately even when shortened TTIs are used, a user terminal according to one aspect of the present invention has a transmitting section that transmits uplink control information by using a shortened TTI, in which a length of a transmission time interval (TTI) is shorter than 1 ms, and a control section that controls transmission of the uplink control information by using a given uplink control channel format for the shortened TTI, based on the number of bits of uplink control information transmitted in the shortened TTI.
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公开(公告)号：US20200059924A1
公开(公告)日：2020-02-20
申请号：US16609434
申请日：2017-05-02
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata , Lihui Wang
Abstract: A terminal is disclosed including a transmitter and a processor. The transmitter transmits uplink control information in an uplink control channel. The processor uses either a first uplink control channel format using a cyclic shift that depends on the uplink control information or a second uplink control channel format not using the cyclic shift that depends on the uplink control information, to transmit the uplink control information, based on a number of bits of the uplink control information and a type of the uplink control information. In other aspects, a radio communication method for a terminal is also disclosed.
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公开(公告)号：US20200022098A1
公开(公告)日：2020-01-16
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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公开(公告)号：US20200015261A1
公开(公告)日：2020-01-09
申请号：US16490105
申请日：2017-03-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou , Huiling Jiang
Abstract: The present invention is designed to prevent communicating directions from conflicting with each other. According to one aspect of the present invention, a terminal has a receiving section that receives downlink control information to schedule transmission and/or receipt of data in a predetermined slot, and a control section that judges the direction of communication in the predetermined slot and that controls transmission and/or receipt.
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Patent Agency Ranking
公开(公告)号：US20200015223A1
公开(公告)日：2020-01-09
申请号：US16479061
申请日：2018-01-19
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata , Lihui Wang
Abstract: The present invention is designed to transmit UCI adequately even when the formats of multiple UL control channels having different durations are made simple and/or common. A user terminal, according to the present invention, has a transmission section that transmits uplink control information (UCI) by using an uplink (UL) control channel, which has a first duration, or a UL control channel, which contains a plurality of units each constituted by the UL control channel of the first duration, and which has a second duration, and a control section that controls arrangement of a reference signal which is at least time-division-multiplexed with the UCI, and the ratio of the number of symbols in which the reference signal is arranged, to the number of all the symbols in the first duration, is 1/2 or less.
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公开(公告)号：US20200014517A1
公开(公告)日：2020-01-09
申请号：US16495531
申请日：2017-03-23
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou , Huiling Jiang
Abstract: According to one aspect of the present invention, a terminal has a receiving section that receives configuration information for multiplexing a short uplink control channel having a short time length and a long uplink control channel having a longer time length than the short uplink control channel within a predetermined period, and a control section that decides whether or not to multiplex the short uplink control channel and the long uplink control channel in the predetermined period based on the configuration information. According to one aspect of the present invention, uplink control information can be reported properly even when multiple uplink control channels of varying time lengths are used.
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公开(公告)号：US20190357248A1
公开(公告)日：2019-11-21
申请号：US16482591
申请日：2018-02-01
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou , Huiling Jiang
Abstract: The present invention is designed so that, even when a demodulation reference signal for an uplink data channel is multiplexed in a short TTI, this demodulation reference signal can be transmitted adequately. A user terminal according to one aspect of the present invention has a receiving section that receives information about the number of combs that are supported, and a control section that controls transmission of a demodulation reference signal for an uplink data channel in a second transmission time interval (TTI), which is shorter than a first TTI, and the control section maps the demodulation reference signal to a comb-shaped resource set, and maps the uplink data channel to a frequency resource of a bandwidth associated with the number of combs supported.
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公开(公告)号：US20190268861A1
公开(公告)日：2019-08-29
申请号：US16333078
申请日：2017-09-13
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang
Abstract: The present invention is designed so that proper power headroom reports (PHRs) can be transmitted as feedback even when shortened processing time and/or shortened transmission time intervals (TTIs) are used. According to one aspect of the present invention, a user terminal has a transmission section that transmits an uplink signal in a shortened transmission time interval (sTTI) in a given carrier, and a control section that controls generation and transmission of a power headroom report (PHR) based on a power headroom (PH) of one or more sTTIs.
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公开(公告)号：US20190223107A1
公开(公告)日：2019-07-18
申请号：US16332852
申请日：2017-09-13
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang
CPC classification number: H04W52/146 , H04L5/0082 , H04L5/1469 , H04W52/14 , H04W72/04 , H04W72/042 , H04W72/0446 , H04W72/12 , H04W72/1263
Abstract: The present invention is designed to control transmission power properly even when communication is controlled based on shortened processing time. A user terminal communicates in a cell where a shortened TTI, having a transmission time interval (TTI) length shorter than 1 ms, is used, and/or in a cell where communication is controlled based on shortened processing time, which is shorter than in existing LTE systems, and this user terminal has a receiving section that receives a DL signal, a transmission section that transmits a UL signal in response to the DL signal, and a control section that controls transmission power of the UL signal based on a power control command contained in downlink control information transmitted in a predetermined transmission time interval in which the DL signal is transmitted, or in a transmission time interval located before the predetermined transmission time interval.
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