公开(公告)号：US20220086895A1

公开(公告)日：2022-03-17

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: H04W72/12 ,  H04W72/04

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：US11219056B2

公开(公告)日：2022-01-04

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：US20210168818A1

公开(公告)日：2021-06-03

申请号：US17047934

申请日：2018-05-29

Applicant: NTT DOCOMO, INC.

Inventor： Xin Wang ,  Min Liu ,  Jing Wang ,  Xiaolin Hou

IPC: H04W72/08 ,  H04L5/00 ,  H04B7/0452

Abstract: Provided by the present disclosure are a method used for signal transmission, and corresponding user terminals and base stations. The method performed by a user terminal includes: receiving indication information for a spatial-domain reception parameter transmitted by a base station; determining a first spatial-domain reception parameter according to the indication information for a spatial-domain reception parameter, so that the user terminal receives downlink data signals through the first spatial domain reception parameter. The method performed by a base station includes: generating indication information for a spatial-domain reception parameter; and transmitting the indication information for a spatial-domain reception parameter to a user terminal, so that the user terminal determines a first spatial-domain reception parameter according to the indication information for a spatial-domain reception parameter.

公开(公告)号：US20210058797A1

公开(公告)日：2021-02-25

申请号：US16964786

申请日：2019-01-17

Applicant: NTT DOCOMO, INC.

Inventor： Shohei Yoshioka ,  Satoshi Nagata ,  Min Liu ,  Jing Wang ,  Chongning Na ,  Yuichi Kakishima

IPC: H04W16/28 ,  H04W74/08 ,  H04W74/00 ,  H04W76/18 ,  H04W24/04 ,  H04B7/06

Abstract: A terminal is disclosed including a processor that increments a beam failure instance counter in a higher layer, based on a beam failure instance indication received from a physical layer; a transmitter that, when the beam failure instance counter is greater than or equal to a predetermined threshold, transmits a random access preamble based on a transmission instruction from the higher layer; and a receiver that monitors, within a predetermined response window period, a physical downlink control channel (PDCCH) for a response to the random access preamble based on a predetermined search space setting. In another aspect, a radio communication method for a terminal is also disclosed.

公开(公告)号：US12176983B2

公开(公告)日：2024-12-24

申请号：US16651003

申请日：2018-09-28

Applicant: NTT DOCOMO, INC. ,  DOCOMO INNOVATIONS, INC.

Inventor： Yuichi Kakishima ,  Chongning Na ,  Min Liu ,  Satoshi Nagata

IPC: H04B7/06 ,  H04B7/08 ,  H04L5/00 ,  H04W16/28 ,  H04W72/0446 ,  H04W72/0453

Abstract: A method of transmitting Channel State Information (CSI)-Reference Signals (RSs) in a wireless communication system that includes a base station (BS) and a user equipment (UE) includes transmitting, from the BS to the UE, first multiple CSI-RSs in a CSI-RS resource set that consists of CSI-RS resources. The first multiple CSI-RSs are transmitted using the CSI-RS resources, respectively. The CSI-RS resource set is repeated in a time domain or a frequency domain. The transmitting transmits second multiple CSI-RSs in the repeated CSI-RS resource set.

公开(公告)号：US11889534B2

公开(公告)日：2024-01-30

申请号：US17054045

申请日：2018-05-10

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Matsumura ,  Satoshi Nagata ,  Jing Wang ,  Min Liu ,  Huiling Li ,  Xin Wang ,  Xiaolin Hou

IPC: H04W72/53 ,  H04L1/00 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/044 ,  H04W80/02 ,  H04W72/23

CPC classification number: H04W72/53 ,  H04L1/0068 ,  H04W72/046 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/23 ,  H04W80/02

Abstract: To prevent deterioration of communication quality even when communication is performed by using a plurality of transmission points, one aspect of a user terminal according to the present disclosure includes: a receiving section that receives a physical shared channel transmitted from a plurality of transmission points, based on certain downlink control information; and a control section that determines at least one of rate matching, quasi-co-location, and a resource to be assigned for the physical shared channel transmitted from the plurality of transmission points, based on the downlink control information.

公开(公告)号：US11303408B2

公开(公告)日：2022-04-12

申请号：US16637982

申请日：2018-08-09

Applicant: NTT DOCOMO, INC.

Inventor： Min Liu ,  Chongning Na ,  Xin Wang ,  Jing Wang ,  Yuichi Kakishima ,  Satoshi Nagata

IPC: H04W16/28 ,  H04L5/00 ,  H04B7/06

Abstract: A reference signal transmission and reception method is presented. The transmission method includes: transmitting a plurality of first reference signals; and transmitting a plurality of groups of second reference signals, where each first reference signal corresponds to one of the plurality of groups of second reference signal, and the group of second reference signals includes a plurality of second reference signals, where a part of reference signals in the group of second reference signals include quasi co-located information, and the quasi co-located information indicates a correlation between resources for the group of second reference signals including the quasi co-located information and resources for the first reference signal corresponding to the group of second reference signals.

公开(公告)号：US20210235453A1

公开(公告)日：2021-07-29

申请号：US17054045

申请日：2018-05-10

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Matsumura ,  Satoshi Nagata ,  Jing Wang ,  Min Liu ,  Huiling Li ,  Xin Wang ,  Xiaolin Hou

IPC: H04W72/04 ,  H04W80/02 ,  H04L1/00

Abstract: To prevent deterioration of communication quality even when communication is performed by using a plurality of transmission points, one aspect of a user terminal according to the present disclosure includes: a receiving section that receives a physical shared channel transmitted from a plurality of transmission points, based on certain downlink control information; and a control section that determines at least one of rate matching, quasi-co-location, and a resource to be assigned for the physical shared channel transmitted from the plurality of transmission points, based on the downlink control information.

公开(公告)号：US20210111773A1

公开(公告)日：2021-04-15

申请号：US16496800

申请日：2018-03-22

Applicant: NTT DOCOMO, INC.

Inventor： Yuichi Kakishima ,  Chongning Na ,  Min Liu ,  Huiling Jiang ,  Satoshi Nagata

IPC: H04B7/06 ,  H04B7/08 ,  H04B7/0417 ,  H04W72/04 ,  H04W76/27

Abstract: A method of beam information feedback in a wireless communication system is disclosed including transmitting, from a base station (BS) to a user equipment (UE), reference signals using multiple beams, and transmitting, from the UE to the BS, first feedback information that indicates at least one of a first correlation level between a pair of beams within each of beam groups and a second correlation level between a pair of the beam groups. The multiple beams are grouped into the beam groups.

公开(公告)号：US20210067288A1

公开(公告)日：2021-03-04

申请号：US16961071

申请日：2019-01-14

Applicant: NTT DOCOMO, INC.

Inventor： Yuichi Kakishima ,  Chongning Na ,  Min Liu ,  Satoshi Nagata

IPC: H04L5/00 ,  H04B7/06

Abstract: A user equipment (UE) is disclosed including a receiver that receives resource set information that indicates the number of selectable Channel State Information Reference Signal (CSI-RS) resources between a first CSI-RS group and a second CSI-RS group, CSI-RSs using first CSI-RS resources in the first CSI-RS group, and CSI-RSs using second CSI-RS resources in the second CSI-RS group. The UE includes a processor that selects at least a CSI-RS resource from the first CSI-RS resources and the second CSI-RS resources based on the resource set information. The UE includes a transmitter that performs CSI reporting that indicates the selected CSI-RS resource.