公开(公告)号：US11128396B2

公开(公告)日：2021-09-21

申请号：US16470918

申请日：2018-01-05

Applicant: NTT DOCOMO, INC.

Inventor： Xin Wang ,  Xiaolin Hou ,  Chongning Na ,  Huiling Jiang ,  Yuichi Kakishima ,  Kazuaki Takeda ,  Satoshi Nagata

IPC: H04W4/00 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04

Abstract: Provided are a user terminal, a feedback method at the user terminal, a base station and a method at the base station. The feedback method at the user terminal includes steps of: calculating first information related to receiving signal quality; combining the first information and a response signal to a hybrid automatic repeat request (HARQ) to be transmitted to a base station to generate a combined signal; carrying out signal processing on the combined signal to generate second information; and transmitting the second information to the base station.

公开(公告)号：US11108504B2

公开(公告)日：2021-08-31

申请号：US15773287

申请日：2016-11-04

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Lihui Wang ,  Liu Liu ,  Huiling Jiang

IPC: H04L1/18 ,  H04W72/04 ,  H04W28/06 ,  H04W28/04 ,  H04L5/00 ,  H04L5/14 ,  H04W72/12

Abstract: A user terminal includes: a transmitter that transmits delivery acknowledgement signals (HARQ-ACKs); a receiver that receives downlink control information including: in one or more predetermined subframes of the downlink control information, first information that indicates a total number of cells to be subjected to downlink (DL) transmission scheduling, and second information that indicates a cumulative number of cells; and a processor that performs control so that the HARQ-ACKs are transmitted in predetermined uplink (UL) subframes based on the first information and the second information. The HARQ-ACKs are transmitted in response to DL signals transmitted from a plurality of cells. The plurality of cells include cells that use Time Division Duplex (TDD). A value of the first information is the same in each of the one or more predetermined subframes, and the processor updates the first information on a per subframe basis.

公开(公告)号：US11071120B2

公开(公告)日：2021-07-20

申请号：US16331823

申请日：2017-09-07

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Satoshi Nagata ,  Jing Wang ,  Liu Liu ,  Huiling Jiang

IPC: H04W72/08 ,  H04L5/00 ,  H04W16/14 ,  H04W72/04 ,  H04W74/08

Abstract: The present invention is designed so that uplink control channels can be transmitted adequately even in carriers in which listening is required prior to transmission. According to one aspect of the present invention, a user terminal has a transmission section that transmits an uplink control signal in an uplink control channel in a given carrier, and a control section that exerts control to map the uplink control channel to a plurality of frequency resources which are discretely distributed in a frequency direction, at a same timing.

公开(公告)号：US20210120574A1

公开(公告)日：2021-04-22

申请号：US16494426

申请日：2017-03-17

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu ,  Chongning Na ,  Xin Wang ,  Jing Wang ,  Lihui Wang ,  Min Liu ,  Huiling Jiang

IPC: H04W72/12 ,  H04W72/04

Abstract: A terminal is disclosed including a receiver that receives a downlink control information and a downlink shared channel that is scheduled by the downlink control information. The terminal also includes a processor that determines an allocation of the downlink shared channel in a time domain based on a first timing indicated by a first time unit and a second timing indicated by a second time unit that are obtained from information notified by the downlink control information. In other aspects, a radio communication method is also disclosed.

公开(公告)号：US20210120557A1

公开(公告)日：2021-04-22

申请号：US16494440

申请日：2017-03-17

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu ,  Chongning Na ,  Xin Wang ,  Jing Wang ,  Lihui Wang ,  Min Liu ,  Huiling Jiang

IPC: H04W72/04 ,  H04W24/08 ,  H04W72/12 ,  H04L5/00 ,  H04L1/18

Abstract: The present invention is designed to appropriately select PUCCH resources used to transmit HARQ-ACK. According to one aspect of the present invention, a user terminal has a control section that monitors candidate resources of one or more downlink (DL) control channels (DL) transmitted in multiple different time and/or frequency resources, and detects one or more downlink control information (DCI), and a transmission section that transmits delivery acknowledgment information in response to a downlink (DL) data channel by using an uplink (UL) control channel, and the control section selects resources for the UL control channel based on the DCI.

公开(公告)号：US10980047B2

公开(公告)日：2021-04-13

申请号：US16494937

申请日：2017-03-23

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Lihui Wang ,  Xiaolin Hou ,  Huiling Jiang

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04

Abstract: Even in the case of transmitting the uplink data and the demodulation reference signal using the short TTI, in order to appropriately control the UL transmission, according to one aspect of the present invention, a user terminal transmits a UL signal and a reference signal by using a predetermined sTTI among multiple sTTIs included in a slot, and controls the allocation of the UL signal and the reference signal based on a predetermined allocation pattern among multiple allocation patterns showing allocations of UL signals and reference signals. In these multiple allocation patterns, a UL signal and a reference signal are included in the same slot, and the reference signal is allocated to the same sTTI where the UL signal is allocated, or to an sTTI preceding the sTTI the UL signal is allocated.

公开(公告)号：US10966250B2

公开(公告)日：2021-03-30

申请号：US16324487

申请日：2017-08-09

Applicant: NTT DOCOMO INC.

Inventor： Yu Jiang ,  Liu Liu ,  Jing Wang ,  Huiling Jiang ,  Satoshi Nagata

IPC: H04W74/08 ,  H04W52/02 ,  H04W72/12 ,  H04W72/04 ,  H04W72/10 ,  H04W74/00

Abstract: Provided are a method used for indicating and determining a parameter value of Listen-Before-Talk (LBT) parameters, a base station and a user equipment, the method including: determining a parameter value of LBT parameters, the LBT parameters including an LBT type, an LBT priority, and a start position of a physical uplink shared channel PUSCH; determining an index for carrying out joint indication of the LBT parameters on the basis of a subset of a full set which is formed by combining possible parameter values of each LBT parameter; generating downlink control information including the index; and sending the downlink control information to a user equipment.

公开(公告)号：US10952237B2

公开(公告)日：2021-03-16

申请号：US16495382

申请日：2018-03-07

Applicant: NTT DOCOMO, INC.

Inventor： Liu Liu ,  Qin Mu ,  Jing Wang ,  Lihui Wang ,  Huiling Jiang ,  Xiaohong Zhang ,  Yong Li

IPC: H04W4/00 ,  H04W72/12 ,  H04L1/00

Abstract: The present disclosure provides a downlink control information transmission method, including generating more than one downlink control information (DCI) according to scheduling information of a user equipment (UE); determining a detection order of the more than one DCI and positions of the more than one DCI in a searching space; adding a position indication field to a respective DCI according to the detection order of the more than one DCI and the positions of the more than one DCI in the searching space; wherein, the position indication field is used to indicate a position of a next DCI of the respective DCI in the detection order; in which, a position indication field in a last DCI in the detection order is used to indicate a position of a first DCI in the detection order; and transmitting the more than one DCI in the searching space according to the positions of the more than one DCI in the searching space. The present disclosure also provides a UE-side method, a corresponding base station and a UE.

公开(公告)号：US10931407B2

公开(公告)日：2021-02-23

申请号：US16089551

申请日：2017-03-30

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Satoshi Nagata ,  Yu Jiang ,  Liu Liu ,  Huiling Jiang

IPC: H04L1/18 ,  H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04L1/16 ,  H04W72/14

Abstract: In scheduling transmission of UL data in a plurality of subframes using single DCI, asynchronous re-transmission control of this UL data is appropriately performed. A user terminal according to an aspect of the present invention includes a receiving section that receives downlink control information (DCI) and a control section that controls transmission of an uplink shared channel in each of a plurality of subframes based on the DCI. The control section determines an HARQ process number (HPN) to use in each of the plurality of subframes based on a HPN field included in the DCI.

公开(公告)号：US10893507B2

公开(公告)日：2021-01-12

申请号：US16326350

申请日：2017-08-17

Applicant: NTT DOCOMO, INC.

Inventor： Qin Mu ,  Liu Liu ,  Xiaohang Chen ,  Anxin Li ,  Huiling Jiang ,  Satoshi Nagata

IPC: H04W4/00 ,  H04W72/02 ,  H04L1/18 ,  H04L1/00 ,  H04W72/04 ,  H04W88/02

Abstract: A method for notifying a repetition pattern of uplink data, a method for determining a repetition pattern of uplink data, and a corresponding user equipment (UE) and base station are provided, wherein the base station is notified of a repetition pattern selected by the UE, so that the base station can correctly determine a transmitting timing of feedback information, thereby preventing a problem in which a transmitting timing of expected feedback information of the UE is inconsistent with the transmitting timing of the feedback information determined by the base station.