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：US20210345298A1

公开(公告)日：2021-11-04

申请号：US17372922

申请日：2021-07-12

Applicant: NTT DOCOMO, INC.

Inventor： Shinpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao ,  Jing Wang ,  Huan Wang ,  Liu Liu ,  Anxin Li ,  Huiling Jiang

IPC: H04W72/02 ,  H04W92/18 ,  H04W24/10 ,  H04W74/08 ,  H04W4/40

Abstract: A terminal is disclosed including a selection unit that selects first resource candidates for sidelink transmission based on monitoring in a sensing window, and specifies second resource candidates by excluding specific periodic resources that are reserved by another terminal from the first resource candidates; and a transmission unit that performs sidelink transmission using a resource selected from the second resource candidates. In another aspect, a transmission method executed by a terminal is also disclosed.

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

IPC: H04L1/18 ,  H04L5/00 ,  H04W28/04 ,  H04W72/04

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.

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：US20210235436A1

公开(公告)日：2021-07-29

申请号：US17229214

申请日：2021-04-13

Applicant: NTT DOCOMO, INC.

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

IPC: H04W72/04 ,  H04W72/12 ,  H04W28/04

Abstract: A terminal is disclosed that includes a receiver that receives first downlink control information (DCI) for scheduling initial transmission and second DCI for scheduling retransmission and a processor that controls transmission of a first uplink (UL) shared channel that is scheduled by the first DCI and transmission of a second UL shared channel that is scheduled by the second DCI. The processor controls the transmission of the first UL shared channel and the transmission of the second UL shared channel based on a reference value that is configured for timing for transmitting a UL shared channel based on information provided through higher layer signaling. The processor also controls transmission of the second UL shared channel in response to information included in each of the first DCI and the second DCI that indicates whether the UL shared channel includes initially transmitted data.

公开(公告)号：US11076310B2

公开(公告)日：2021-07-27

申请号：US16475920

申请日：2018-01-05

Applicant: NTT DOCOMO, INC.

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

IPC: H04W24/10 ,  H04W16/28 ,  H04W88/02

Abstract: The present invention is designed to adequately perform communication in accordance with measurement operation even when beam forming is applied. A user terminal according to the present invention has a receiving section that receives a DL measurement transmitted from one or a plurality of antenna ports, a measurement section that performs cell level measurement and/or beam level measurement using the DL measurement signal, and a control section that controls reporting of the measurement result of cell level measurement and/or beam level measurement, wherein the control section controls random access using resources configured in accordance with a reporting target of the measurement result.

公开(公告)号：US11057931B2

公开(公告)日：2021-07-06

申请号：US16087831

申请日：2017-03-29

Applicant: NTT DOCOMO, INC.

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

IPC: H04W74/08 ,  H04W16/14 ,  H04W74/00 ,  H04W76/27 ,  H04W72/04 ,  H04W80/02

Abstract: The present invention is designed to perform random access procedures adequately in a carrier in which LBT (Listen Before Talk) is configured. A user terminal, according to one aspect of the present invention, has a control section that controls random access procedures for a carrier where listening is performed before uplink transmission, a receiving section that receives downlink control information including information about a period that is formed with a plurality of transmission time intervals (TTIs) in which a random access preamble can be transmitted, and a transmission section that transmits the random access preamble in the period, in the carrier, in response to receipt of the downlink control information.

公开(公告)号：US20210136728A1

公开(公告)日：2021-05-06

申请号：US16074176

申请日：2017-01-30

Applicant: NTT DOCOMO, INC.

Inventor： Shimpei Yasukawa ,  Hiroki Harada ,  Satoshi Nagata ,  Liu Liu ,  Qun Zhao ,  Huiling Jiang

IPC: H04W72/00 ,  H04J1/08 ,  H04W72/12 ,  H04L5/00 ,  H04W72/04

Abstract: There is provided a base station of a radio communication system including a plurality of base stations communicating with the user equipment, the base station including a generator configured to generate a downlink physical shared channel receivable by a plurality of units of user equipment based on a predetermined ID commonly configured in the plurality of base stations; and a transmitter configured to transmit the generated downlink physical shared channel to the units of user equipment with a predetermined subframe.

公开(公告)号：US20210136669A1

公开(公告)日：2021-05-06

申请号：US17143533

申请日：2021-01-07

Applicant: NTT DOCOMO, INC.

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

IPC: H04W48/16 ,  H04W16/14 ,  H04W72/08 ,  H04W74/08 ,  H04L5/00 ,  H04W72/12

Abstract: A base station is disclosed including a receiver that receives an uplink signal in a channel occupancy time initiated by a terminal performing channel listening based on a first listening type and a processor that, when transmitting a downlink signal in the channel occupancy time, performs the channel listening based on a second listening type with which channel access is less difficult than channel access with the first listening type. In other aspects, a terminal and radio communication method for a base station are also disclosed.

公开(公告)号：US20210127361A1

公开(公告)日：2021-04-29

申请号：US16074152

申请日：2017-01-25

Applicant: NTT DOCOMO, INC.

Inventor： Shimpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao ,  Huiling Jiang ,  Liu Liu ,  Anxin Li

IPC: H04W72/02 ,  H04W72/04 ,  H04W28/26 ,  H04W4/70 ,  H04W4/40

Abstract: A user equipment in a wireless communication system that supports D2D communication includes: a selection unit that selects a first control information resource for transmitting control information from a control information resource pool and selects a first data resource for transmitting data from a data transmission resource pool among radio resources in which the control information resource pool and the data transmission resource pool are continuously set without any limitation in a time direction; and a transmission unit that transmits control information including information that designates the first data resource by using the first control information resource and transmits data by using the first data resource.