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公开(公告)号：US11671968B2
公开(公告)日：2023-06-06
申请号：US16479061
申请日：2018-01-19
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata , Lihui Wang
IPC: H04L5/00 , H04W80/08 , H04W72/04 , H04W72/21 , H04W72/0453
CPC classification number: H04W72/21 , H04L5/0051 , H04W72/0453 , H04W80/08
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：US11664918B2
公开(公告)日：2023-05-30
申请号：US16764206
申请日：2017-11-16
Applicant: NTT DOCOMO, INC.
Inventor： Daiki Takeda , Kazuki Takeda , Hiroki Harada , Yousuke Sano
CPC classification number: H04J11/0069 , H04W72/23
Abstract: A terminal is disclosed including a receiver that receives a synchronization signal/physical broadcast channel (SS/PBCH) block including a synchronization signal (SS) and a physical broadcast channel (PBCH); and a processor that determines a control resource set based on configuration information in a configuration information set of a plurality of configuration information sets, the configuration information set being associated with information based on the SS/PBCH block, the configuration information being associated with a value of a field in the PBCH, and the configuration information including a plurality of parameters regarding the control resource set. In other aspects, a radio communication method and a base station are also disclosed.
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公开(公告)号：US11632216B2
公开(公告)日：2023-04-18
申请号：US16763835
申请日：2017-11-17
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata
IPC: H04L5/00 , H04L1/18 , H04L27/26 , H04W72/04 , H04L1/1812
Abstract: A user terminal according to one aspect of the present disclosure includes a transmitting section that transmits first uplink control information (UCI) including a positive scheduling request (SR) or second UCI including a negative SR using a certain resource, and a control section that, in order to specify the certain resource, determines to use which of a first configuration and a second configuration, the first configuration being for transmitting the first UCI and the second UCI using the same frequency resource, the second configuration being for transmitting the first UCI and the second UCI using different frequency resources. According to one aspect of the present disclosure, reduction in communication throughput and the like can be suppressed even if a new UL control channel is used to transmit the UCI.
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公开(公告)号：US11626965B2
公开(公告)日：2023-04-11
申请号：US16960743
申请日：2018-01-11
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: The present invention is designed to improve the throughput of radio communication by using partial frequency bands for DL/UL communication. A user terminal has a receiving section that receives downlink control information by using a first partial frequency band (BWP) among a plurality of BWPs configured in a carrier, and a control section that identifies, via a resource allocation field (RA field) having a size that is configured based on a given BWP among the plurality of BWPs, a resource of a second BWP, which is different from the first BWP, in the downlink control information.
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公开(公告)号：US11611412B2
公开(公告)日：2023-03-21
申请号：US17263701
申请日：2018-07-30
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Shaozhen Guo , Xiaolin Hou
IPC: H04L1/18 , H04L1/1812 , H04B7/0456 , H04L1/1867 , H04W72/1268 , H04W72/12
Abstract: According to one aspect of the present disclosure, a base station includes a transmitting section that transmits an uplink control channel (PUCCH: Physical Uplink Control Channel) repetition and configuration information for configuring a dynamic hybrid automatic repeat reQuest acknowledgement (HARQ-ACK) codebook to a user terminal, and a control section that controls scheduling of at least one of downlink control information and a downlink shared channel for the user terminal so that the user terminal uses one PUCCH format or a codebook that does not exceed a given codebook size in a given period to perform the PUCCH repetition. According to one aspect of the present disclosure, it is possible to appropriately transmit the UCI even when the PUCCH repetition is used.
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Patent Agency Ranking
公开(公告)号：US11601870B2
公开(公告)日：2023-03-07
申请号：US16469245
申请日：2017-12-14
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qin Mu
IPC: H04W48/12 , H04L5/00 , H04W72/04 , H04W72/0453
Abstract: The present invention is designed so that communication is performed appropriately in radio communication systems that support different numerologies than existing LTE systems. A receiving section that receives a downlink control channel, and a control section that controls the detection of search spaces that serve as candidates for allocating the downlink control channel are provided, and the control section controls the detection of a common search space and a user-specific search space, in which different subcarrier spacings and/or different transmission cycles are configured.
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公开(公告)号：US11589340B2
公开(公告)日：2023-02-21
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：US11575487B2
公开(公告)日：2023-02-07
申请号：US15752935
申请日：2016-08-12
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Hiroki Harada , Satoshi Nagata
Abstract: This invention aims to appropriately transmit HARQ-ACK in future wireless communication systems. A user equipment includes a reception unit which receives a DL signal, and a control unit which controls transmission of a delivery acknowledgement signal for the DL signal, wherein the reception unit receives information concerning an instruction to transmit the delivery acknowledgement signal and the control unit controls transmission of the delivery acknowledgement signal on the basis of the information concerning the instruction to transmit the delivery acknowledgement signal. The reception unit of the user equipment further receives downlink control information including the information concerning the instruction to transmit the delivery acknowledgement signal.
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公开(公告)号：US11553514B2
公开(公告)日：2023-01-10
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
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：US11552744B2
公开(公告)日：2023-01-10
申请号：US16637162
申请日：2017-08-09
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: To appropriately perform communication even in a case where a transmission timing/transmission period for retransmission control information is flexibly controlled (is variable), an aspect of a user terminal according to the present invention includes a transmitting section that transmits retransmission control information for DL transmission and a control section that controls transmission of the retransmission control information at certain timings reported from a base station. A time window is configured for the retransmission control information, the control section controls transmission of the retransmission control information, based on the certain timings and the time window configured for the retransmission control information, and at least one of the certain timings is included within a range of the time window.
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