公开(公告)号：US11140669B2

公开(公告)日：2021-10-05

申请号：US16328756

申请日：2017-08-30

申请人： NTT DOCOMO, INC.

发明人： Kazuki Takeda ,  Satoshi Nagata ,  Shaozhen Guo ,  Lihui Wang ,  Liu Liu ,  Xiaolin Hou ,  Huiling Jiang

IPC分类号： H04W72/04 ,  H04W28/04 ,  H04L1/18

摘要： The present invention is designed so that the transmission of A/Ns can be controlled properly when the reference value for the timing for transmitting signals is controlled in radio base stations and/or user terminals. A user terminal, according to the present invention, has a receiving section that receives a downlink (DL) shared channel, and a control section that controls transmission of retransmission control information in response to the DL shared channel. The control section controls the transmission of the retransmission control information based on a reference value that is configured for timing for transmitting the retransmission control information.

公开(公告)号：US11134517B2

公开(公告)日：2021-09-28

申请号：US16324499

申请日：2017-08-11

申请人： NTT DOCOMO INC.

发明人： Jing Wang ,  Liu Liu ,  Huiling Jiang ,  Hiroki Harada

IPC分类号： H04W74/08 ,  H04W72/04 ,  H04L1/00 ,  H04W72/14

摘要： Provided are a method for indicating and determining a start transmission timing of a subframe of a physical uplink shared channel, and a base station and a user equipment. The method includes: receiving downlink control information from a base station, the downlink control information comprising indication information about the start transmission timing, and a listen before talk (LBT) type; determining the structure of the previous subframe to the current subframe; and determining, from four timings different from one another, the start transmission timing of the current subframe based on the indication information, the LBT type, and the structure of the previous subframe.

公开(公告)号：US11129197B2

公开(公告)日：2021-09-21

申请号：US16129093

申请日：2018-09-12

申请人： NTT DOCOMO, INC.

发明人： Tooru Uchino ,  Kazuki Takeda ,  Lan Chen ,  Huiling Jiang ,  Liu Liu

IPC分类号： H04W74/08 ,  H04W76/11 ,  H04L5/00 ,  H04W72/04

摘要： A user apparatus and a control information detection method executed by a user apparatus are disclosed. The user apparatus includes a memory that stores a preamble and identification information of the user apparatus; a processor that detects control information, addressed to the user apparatus, by monitoring a candidate area of a common candidate area where a plurality of user apparatuses commonly perform monitoring and an individual candidate area for the user apparatus; and a transmitter that transmits the preamble to a base station. The processor monitors, during a period when the user apparatus monitors a random access response, the individual candidate area using the identification information of the user apparatus to detect control information that is scrambled by the base station using the identification information of the user apparatus.

公开(公告)号：US11128406B2

公开(公告)日：2021-09-21

申请号：US16496240

申请日：2018-03-07

申请人： NTT DOCOMO, INC.

发明人： Jiahui Liu ,  Qin Mu ,  Liu Liu ,  Huiling Jiang ,  Lan Chen ,  Naoto Okubo

IPC分类号： H04L1/16 ,  H04W52/02 ,  G16Y30/00

摘要： This application provides data transmitting method, a data receiving method, a user equipment, and a base station, which can realize early acknowledgment of uplink data reception. The data transmitting method for a user equipment includes: transmitting uplink data to a base station with an initial retransmission times; determining, within a predetermined interval, whether an acknowledged signal of the uplink data is received from the base station, wherein in the case where the acknowledged signal is received within the predetermined interval, transmission of the uplink data is stopped; and in the case where the acknowledged signal is not received within the predetermined interval, the uplink data is transmitted to the base station in a subsequent retransmission mode, until the acknowledged signal is received from the base station or a maximum retransmission times is reached.

公开(公告)号：US11108504B2

公开(公告)日：2021-08-31

申请号：US15773287

申请日：2016-11-04

申请人： NTT DOCOMO, INC.

发明人： Kazuki Takeda ,  Satoshi Nagata ,  Lihui Wang ,  Liu Liu ,  Huiling Jiang

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

摘要： 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

申请人： NTT DOCOMO, INC.

发明人： Hiroki Harada ,  Satoshi Nagata ,  Jing Wang ,  Liu Liu ,  Huiling Jiang

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

摘要： 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：US20210153202A1

公开(公告)日：2021-05-20

申请号：US16622830

申请日：2017-06-15

申请人： NTT DOCOMO, INC.

发明人： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu

IPC分类号： H04W72/04 ,  H04W56/00 ,  H04W24/08 ,  H04L1/00

摘要： A terminal is disclosed including a receiver that receives information on a control resource set including a candidate of a downlink control channel, and a processor that assumes a resource corresponding to the downlink control channel is an unavailable resource for downlink data when the control resource set overlaps with the downlink data. In other aspects, a radio communication method for a terminal is also disclosed.

公开(公告)号：US20210120574A1

公开(公告)日：2021-04-22

申请号：US16494426

申请日：2017-03-17

申请人： NTT DOCOMO, INC.

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

IPC分类号： H04W72/12 ,  H04W72/04

摘要： 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

申请人： NTT DOCOMO, INC.

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

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

摘要： 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：US10966250B2

公开(公告)日：2021-03-30

申请号：US16324487

申请日：2017-08-09

申请人： NTT DOCOMO INC.

发明人： Yu Jiang ,  Liu Liu ,  Jing Wang ,  Huiling Jiang ,  Satoshi Nagata

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

摘要： 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.