公开(公告)号：US20140133334A1

公开(公告)日：2014-05-15

申请号：US14112272

申请日：2012-04-20

Applicant: NTT DOCOMO, INC.

Inventor： Satoshi Nagata ,  Yang Song ,  Xiaoming She ,  Lan Chen

IPC: H04W24/10

CPC classification number: H04W24/10 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0636 ,  H04B17/24 ,  H04L1/0025 ,  H04L1/003

Abstract: Provided are a method for determining multi-user channel quality in a mobile communication system, a user terminal and a base station of the present invention. The method includes: in each user terminal, calculating the MU CQIs based on a first feedback template notified from a base station that has control over the user terminal or a second feedback template set by the user terminal and feeding the MU CQIs back to the base station. In the first feedback template or the second feedback template, a feedback ratio of MU CQIs for a plurality of hypothetical interference numbers k are defined, k being an integer larger than 0 and smaller than a maximum number of users schedulable by the base station. According to the present invention, it is possible to improve the accuracy in multi-user MIMO scheduling.

Abstract translation: 提供了一种用于确定本发明的移动通信系统，用户终端和基站中的多用户信道质量的方法。 该方法包括：在每个用户终端中，基于从具有对用户终端的控制的基站通知的第一反馈模板或由用户终端设置的第二反馈模板来计算MU CQI，并将MU CQI送回到基站 站。 在第一反馈模板或第二反馈模板中，定义多个假想干扰数k的MU CQI的反馈比，k是大于0并小于由基站调度的最大用户数的整数。 根据本发明，可以提高多用户MIMO调度的精度。

公开(公告)号：US20250151052A1

公开(公告)日：2025-05-08

申请号：US18835917

申请日：2022-02-10

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Matsumura ,  Satoshi Nagata ,  Jing Wang ,  Lan Chen

IPC: H04W72/1268 ,  H04W72/232

Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives first downlink control information for scheduling a first UL channel and second downlink control information for scheduling a second UL channel; and a control section that controls at least one of application of first UE operation related to transmission of the first channel and transmission of the second channel in a time domain and application of second UE operation related to order of transmission of each of the downlink control information and each of the UL channels, based on whether or not respective panels or transmission/reception points (TRPs) corresponding to the first downlink control information and the second downlink control information are same.

公开(公告)号：US20250150865A1

公开(公告)日：2025-05-08

申请号：US18838171

申请日：2022-02-14

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Matsumura ,  Satoshi Nagata ,  Jing Wang ,  Lan Chen

IPC: H04W24/08 ,  H04B7/06 ,  H04L5/00

Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that, when a first reference signal set for beam failure detection and a second reference signal set for a candidate beam, or a third reference signal set for the beam failure detection and a fourth reference signal set for the candidate beam instead of the first reference signal set and the second reference signal set are supported, receives one of information related to the second reference signal set and information related to the fourth reference signal set; and a control section that, when information related to the first reference signal set and information related to the third reference signal set are not provided, determines a reference signal set to be used for the beam failure detection, based on one of the information related to the second reference signal set and the information related to the fourth reference signal set.

公开(公告)号：US20250133568A1

公开(公告)日：2025-04-24

申请号：US18689709

申请日：2021-09-10

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Matsumura ,  Satoshi Nagata ,  Weiqi Sun ,  Jing Wang ,  Lan Chen

IPC: H04W72/23 ,  H04L1/08

Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives information related to at least one of a search space set and a control resource set for repetition transmission of a downlink control channel; and a control section that controls reception of a downlink control channel applied with the repetition transmission, based on at least one of a plurality of associated search space sets and a plurality of associated control resource sets obtained based on the information.

公开(公告)号：US20250119256A1

公开(公告)日：2025-04-10

申请号：US18836192

申请日：2022-02-10

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Matsumura ,  Satoshi Nagata ,  Jing Wang ,  Lan Chen

IPC: H04L5/00 ,  H04W72/1268 ,  H04W72/232

Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives downlink control information including a resource assignment of a physical uplink shared channel and a value of an antenna port indication, and a control section that controls transmission of a demodulation reference signal (DMRS), based on an association between the value, the number of code division multiplexing (CDM) groups, and a DMRS port. The number of the CDM groups for DMRS configuration type 1 is larger than 2, and the number of the CDM groups for DMRS configuration type 2 is larger than 3. According to one aspect of the present disclosure, an appropriate number of DMRS ports can be used.

公开(公告)号：US20250106667A1

公开(公告)日：2025-03-27

申请号：US18832706

申请日：2022-01-28

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Matsumura ,  Satoshi Nagata ,  Jing Wang ,  Lan Chen

IPC: H04W24/10 ,  H04W28/16

Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a configuration indicating X channel measurement resources for X transmission/reception points (TRPs) for coherent joint transmission; and a control section that controls channel state information (CSI) reporting including X pieces of CSI corresponding to the X respective channel measurement resources, based on the configuration. According to one aspect of the present disclosure, it is possible to appropriately perform CSI reporting for CJT.

公开(公告)号：US20250039874A1

公开(公告)日：2025-01-30

申请号：US18696732

申请日：2021-09-30

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Matsumura ,  Nagoya Shibaike ,  Satoshi Nagata ,  Weiqi Sun ,  Jing Wang ,  Qiping Pi ,  Lan Chen

IPC: H04W72/1273 ,  H04W72/0446

Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a downlink control channel, and a control section that judges, based on the presence or absence of configuration or support of scheduling of a plurality of downlink shared channels in a plurality of transmission/reception points using downlink control information provided by the downlink control channel, at least one of a transmission configuration indication (TCI state) indicated by the downlink control information and a TCI state corresponding to a downlink shared channel scheduled by the downlink control information.

公开(公告)号：US20250016678A1

公开(公告)日：2025-01-09

申请号：US18710530

申请日：2021-11-16

Applicant: NTT DOCOMO, INC.

Inventor： Liu Liu ,  Xufei Zheng ,  Jing Wang ,  Yu Jiang ,  Lan Chen

IPC: H04W52/02

Abstract: The present application provides a network energy consumption management system, including: a training unit, which is configured to acquire training data from at least one network node, and use the training data to train an energy consumption management model, so as to obtain a trained energy consumption management model; a prediction unit, which is configured to acquire input data from the at least one network node, and provide the input data for the trained energy consumption management model, so as to obtain output decision data; and an execution unit, which is configured to control the at least one network node to execute an energy conservation operation on the basis of the decision data.

公开(公告)号：US12191960B2

公开(公告)日：2025-01-07

申请号：US18011447

申请日：2021-04-09

Applicant: NTT DOCOMO, INC.

Inventor： Xin Wang ,  Xiaolin Hou ,  Anxin Li ,  Lan Chen

IPC: H04L1/02 ,  H04B7/0417 ,  H04B7/06

Abstract: The present invention provides a terminal and a base station in a wireless communication system, and methods executed by the terminal and the base station. The terminal comprises: a processing unit, configured to perform characteristic domain transformation on a channel matrix to obtain a transformed channel characteristic and compress the transformed channel characteristic to obtain a compressed channel characteristic; and a transmitting unit, configured to transmit the compressed channel characteristic, as feedback information, to the base station.

公开(公告)号：US20250008566A1

公开(公告)日：2025-01-02

申请号：US18712638

申请日：2021-11-25

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Matsumura ,  Satoshi Nagata ,  Jing Wang ,  Lan Chen

IPC: H04W74/0833 ,  H04L1/08

Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a configuration related to repetition of a physical random access channel, and a control section that determines a plurality of resources for the repetition accompanied by a same beam. According to one aspect of the present disclosure, it is possible to improve coverage in a random access procedure.