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公开(公告)号：US11272518B2
公开(公告)日：2022-03-08
申请号：US16629845
申请日：2017-07-13
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Keisuke Saito , Kazuaki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: A terminal is disclosed that includes a receiver that receives a specified signal including a synchronization signal and a broadcast channel and a controller that controls a reception of a demodulation reference signal for a downlink shared channel while assuming that the demodulation reference signal does not collide with the specified signal. In other aspects, a radio communication method for a terminal is also disclosed.
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公开(公告)号：US20220061011A1
公开(公告)日：2022-02-24
申请号：US17421321
申请日：2019-01-09
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Tooru Uchino , Hideaki Takahashi , Satoshi Nagata , Lihui Wang
IPC: H04W56/00
Abstract: A terminal includes: a control section that identifies one cell group among a plurality of candidate cell groups where timing information on adjustment of reference time is receivable; and a reception section that receives the timing information associated with the identified cell group.
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公开(公告)号：US11245498B2
公开(公告)日：2022-02-08
申请号：US16612619
申请日：2017-05-12
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: According to one aspect of the present invention, a user terminal has a transmission section that performs UL grant-free transmission, in which UL data is transmitted without a UL transmission command from a radio base station, a receiving section that receives a DL signal that is transmitted from the radio base station in response to the UL grant-free transmission, and a control section that monitors the DL signal in a predetermined range, and controls retransmission of the UL data or transmission of new data, based on the DL signal received.
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公开(公告)号：US11201714B2
公开(公告)日：2021-12-14
申请号：US16650929
申请日：2017-09-29
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Yuichi Kakishima , Huiling Li , Chongning Na , Lihui Wang , Xin Wang
IPC: H04L5/00
Abstract: To appropriately control UL transmission such as a CSI reporting when communication is performed by applying a different configuration from those of legacy LTE systems, one aspect of a user terminal according to the present invention includes: a transmitting section that transmits first Channel State Information (CSI) and second CSI of different information types to be reported, by using an uplink control channel and/or an uplink shared channel based on timings respectively configured by a base station; and a control section that, when transmission timings of the first CSI and the second CSI overlap, performs control to transmit both or one of the first CSI and the second CSI.
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公开(公告)号：US20210329682A1
公开(公告)日：2021-10-21
申请号：US17263947
申请日：2018-07-30
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Shaozhen Guo , Lihui Wang , Xiaolin Hou
Abstract: For appropriately transmitting a delivery acknowledgement signal even in a case where at least one of a transmission timing and a resource of the delivery acknowledgement signal is flexibly set, a base station according to an aspect of the present disclosure includes a transmitting section that transmits downlink control information used for scheduling a downlink shared channel, a receiving section that receives a delivery acknowledgement signal for the downlink shared channel, and a control section that performs, when the delivery acknowledgement signal is transmitted using a downlink allocation index included in the downlink control information for each group determined based on an uplink control channel resource designated using the downlink control information, control so that different uplink control channel resources in same slot are not designated by the downlink control information.
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Patent Agency Ranking
公开(公告)号：US11146366B2
公开(公告)日：2021-10-12
申请号：US16482641
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 retransmission control is executed appropriately in smaller units than TBs (for example, in units of CBs, in units CBGs, etc.). A user terminal according to one aspect of the present invention has a receiving section that receives a downlink (DL) signal including one or more code blocks (CBs), and a control section that controls transmission of delivery acknowledgment information for the DL signal per CB or per code block group (CBG) including or one or more CBs, and a CB or a CBG where a negative acknowledgment (NACK) is indicated by the delivery acknowledgment information is retransmitted by using a numerology that is the same as or different from that of initial transmission.
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公开(公告)号：US20210315001A1
公开(公告)日：2021-10-07
申请号：US17267268
申请日：2018-08-10
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: To appropriately perform communication even when configured grant-based UL transmission is configured, a user terminal according to an aspect of the present disclosure includes: a transmitting section that transmits a first demodulation reference signal (DMRS) for demodulating a first uplink shared channel scheduled by downlink control information and a second DMRS for demodulating a second uplink shared channel that is not scheduled by the downlink control information; and a control section that controls generation of a sequence of the first DMRS and a sequence of the second DMRS based on higher layer parameters configured separately.
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公开(公告)号：US20210314990A1
公开(公告)日：2021-10-07
申请号：US17264634
申请日：2018-07-30
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Shaozhen Guo , Lihui Wang , Xiaolin Hou
Abstract: For appropriately transmitting a delivery acknowledgement signal in a case where at least one of a transmission timing and a resource of the delivery acknowledgement signal is flexibly set, a user terminal according to an aspect of the present disclosure includes a receiving section that receives a downlink shared channel scheduled using downlink control information, a transmitting section that transmits a delivery acknowledgement signal for the downlink shared channel, and a control section that controls transmission of the delivery acknowledgement signal using a downlink allocation index included in the downlink control information for each group determined based on a transmission slot for an uplink control channel designated by the downlink control information or for each group determined based on an uplink control channel resource designated by the downlink control information.
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公开(公告)号：US11139942B2
公开(公告)日：2021-10-05
申请号：US16612611
申请日：2017-05-12
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: A user terminal communicates by using a plurality of cells, including at least a given cell to use a first TTI and a second TTI having a shorter TTI length than the first TTI, and this user terminal has a receiving section that receives, in the given cell, first downlink control information that is transmitted by using the first TTI and/or second downlink control information that is transmitted by using the second TTI, and a control section that controls receipt of a downlink shared channel that is transmitted in another cell and/or transmission of an uplink shared channel, based on the first downlink control information and/or the second downlink control information.
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公开(公告)号：US20210297191A1
公开(公告)日：2021-09-23
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 , H04W72/12 , H04B7/0456
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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