公开(公告)号：US11979875B2

公开(公告)日：2024-05-07

申请号：US18046017

申请日：2022-10-12

Applicant: NTT DOCOMO, INC.

Inventor： Qin Mu ,  Liu Liu ,  Naoto Okubo ,  Wei Xu ,  Yong Li ,  Wenbo Wang

IPC: H04W72/1268 ,  H04W72/21 ,  H04W72/23

CPC classification number: H04W72/1268 ,  H04W72/21 ,  H04W72/23

Abstract: A terminal is disclosed including a transmitting unit that transmits, to a base station, a schedule request (SR); and a receiving unit that receives, from the base station, an uplink grant indicating scheduling information for transmitting uplink data, wherein the transmitting unit transmits, to the base station, the uplink data by employing the scheduling information. In other aspects, a base station and a system are also disclosed.

公开(公告)号：US11758558B2

公开(公告)日：2023-09-12

申请号：US17533756

申请日：2021-11-23

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: H04W72/23 ,  H04W72/0446 ,  H04W72/53

CPC classification number: H04W72/23 ,  H04W72/0446 ,  H04W72/53

Abstract: An apparatus is disclosed including a receiver that receives a downlink control information and a downlink shared channel that is scheduled by the downlink control information; 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; and an output apparatus that outputs information based on the downlink shared channel, wherein the first timing is defined based on a numerology of the downlink shared channel. In other aspects, a system is also disclosed.

公开(公告)号：US20230148209A1

公开(公告)日：2023-05-11

申请号：US18150467

申请日：2023-01-05

Applicant: NTT DOCOMO, INC.

Inventor： Qin Mu ,  Liu Liu ,  Wenjia Liu ,  Xiaolin Hou

IPC: H04L5/00

CPC classification number: H04L5/0048

Abstract: Provided are a wireless communication method applied to a user equipment, a wireless communication method applied to a base station, user equipment and a base station, the wireless communication method applied to the user equipment includes: jointly selecting multiplexing identification information and a reference signal for the user equipment, the multiplexing identification information being used to distinguish data of the user equipment from data of other user equipment; using the selected multiplexing identification information to perform processing on the data; and sending the processed data and the reference signal.

公开(公告)号：US11595997B2

公开(公告)日：2023-02-28

申请号：US15761874

申请日：2016-09-23

Applicant: NTT DOCOMO, INC.

Inventor： Hideyuki Moroga ,  Kazuaki Takeda ,  Huiling Jiang ,  Liu Liu ,  Qin Mu

IPC: H04W74/08 ,  H04W72/14 ,  H04W72/04 ,  H04L1/18 ,  H04L1/1867 ,  H04L1/1812 ,  H04W72/0453

Abstract: A user terminal is disclosed, where a band to use is limited to a partial narrow band in a system band. The user terminal includes a transmitter that transmits and/or a receiver that receives a signal, and a controller that controls repetitious reception and/or repetitious transmission of a control channel in a random access procedure based on a coverage enhancement level for a random access channel. A radio base station that communicates with a user terminal is also disclosed, where a band to use is limited to a partial narrow band in a system band. The radio base station includes a transmitter that transmits and/or a receiver that receives a signal, and a controller that controls to transmit information to make the user terminal control repetitious reception and/or repetitious transmission of a control channel in a random access procedure based on a coverage enhancement level for a random access channel.

公开(公告)号：US11356207B2

公开(公告)日：2022-06-07

申请号：US16609594

申请日：2018-03-07

Applicant: NTT DOCOMO, INC.

Inventor： Jiahui Liu ,  Qin Mu ,  Liu Liu ,  Naoto Okubo

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

Abstract: Disclosed are a HARQ-ACK feedback method, a HARQ-ACK extraction method, a base station, and a user equipment. The Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) feedback method is performed by a base station, and used to feed back corresponding HARQ-ACKs to a plurality of user equipments. The method includes: generating, by employing a plurality of HARQ-ACKs corresponding to the plurality of user equipments, at least one piece of downlink control information, where for each user equipment, an implicit mapping relationship exists between the user equipment and one or more information bits of the downlink control information; and transmitting to the plurality of user equipments the downlink control information.

公开(公告)号：US11218202B2

公开(公告)日：2022-01-04

申请号：US16496295

申请日：2018-03-07

Applicant: NTT DOCOMO, INC.

Inventor： Min Liu ,  Liu Liu ,  Huiling Jiang ,  Xin Wang ,  Qin Mu ,  Chongning Na ,  Jing Wang ,  Yuichi Kakishima ,  Kazuaki Takeda ,  Satoshi Nagata

IPC: H04B7/06 ,  H04B7/0408 ,  H04W16/28

Abstract: Provided are a beam configuration method, a mobile station and a base station. The beam configuration method performed by a base station according to embodiments of the present invention includes: determining a beam transmission scheme for a mobile station according to performance of the mobile station; and transmitting information to the mobile station according to the beam transmission scheme.

公开(公告)号：US11089623B2

公开(公告)日：2021-08-10

申请号：US16482902

申请日：2018-02-02

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu ,  Huiling Jiang

IPC: H04W72/12 ,  H04W72/04

Abstract: The present invention provides a user terminal and a radio communication method, whereby data communication processes can be performed adequately even when downlink control channels that are different from those of existing LTE systems are configured. A user terminal has a receiving section that receives downlink control information, which is transmitted via a downlink control channel in a control resource set configured in a predetermined resource block, and a control section that controls receipt of downlink data scheduled in a predetermined frequency field, based on the downlink control information, and the downlink data is allocated over the predetermined frequency field from the same time location, or allocated to the predetermined frequency field from varying time locations.

公开(公告)号：US20210185650A1

公开(公告)日：2021-06-17

申请号：US17189805

申请日：2021-03-02

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Kazuaki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Lihui Wang

IPC: H04W72/04 ,  H04L5/00

Abstract: A terminal is disclosed including a receiver that monitors downlink control channel candidates in a predetermined frequency bandwidth out of a plurality of frequency bandwidths; and a processor that performs a control to change the predetermined frequency bandwidth in accordance with a predetermined timer. In another aspect, a radio communication method is also disclosed.

公开(公告)号：US20210099979A1

公开(公告)日：2021-04-01

申请号：US16634376

申请日：2017-07-28

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu

IPC: H04W72/04

Abstract: To appropriately communicate a control channel even when communication is performed by applying a different control channel configuration from those of legacy LTE systems, one aspect of the terminal includes: a receiving section that receives a downlink control channel; and a processor that determines a number of downlink control channel candidates to be monitored within a slot based on a rule that uses a maximum number of downlink control channel candidates.

公开(公告)号：US10945248B2

公开(公告)日：2021-03-09

申请号：US15543596

申请日：2016-01-29

Applicant: NTT DOCOMO, INC.

Inventor： Kazuaki Takeda ,  Liu Liu ,  Huiling Jiang ,  Qin Mu

IPC: H04L12/801 ,  H04L5/14 ,  H04L29/06 ,  H04L1/00 ,  H04W72/04 ,  H04J11/00 ,  H04W74/08 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: The present invention is designed so that communication can be carried out adequately even when the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth. According to an example of the present invention, a user terminal, in which the bandwidth to use is limited to a partial reduced bandwidth in a system bandwidth, has an acquiring section that acquires EPDCCH (Enhanced PDCCH) configuration information based on information that is reported from a radio base station without using a PDCCH (Physical Downlink Control Channel), and a receiving section that detects a user terminal-specific search space (USS: UE-specific Search Space) of an EPDCCH based on the EPDCCH configuration information.