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公开(公告)号：US20240063969A1
公开(公告)日：2024-02-22
申请号：US18258913
申请日：2021-02-01
Applicant: NTT DOCOMO, INC.
Inventor： Xin Wang , Xiaolin Hou , Anxin Li , Lan Chen , Hiroki Harada
IPC: H04L5/00 , H04B7/0456
CPC classification number: H04L5/0051 , H04B7/0456
Abstract: The present disclosure provides a base station, a terminal and channel reconstruction methods performed by a base station and a terminal. The base station includes: a transmitting unit configured to transmit channel state information reference signals of multiple ports to a terminal, wherein the channel state information reference signals of multiple ports have a first density in frequency domain in one time interval; a receiving unit configured to receive precoding matrix indication information of a first granularity from the terminal; a processing unit configured to determine a channel of a second granularity according to the precoding matrix indication information of the first granularity, and perform downlink precoding on the channel, wherein the second granularity is finer than the first granularity.
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公开(公告)号：US20240056142A1
公开(公告)日：2024-02-15
申请号：US18258641
申请日：2021-02-01
Applicant: NTT DOCOMO, INC.
Inventor： Xin Wang , Xiaolin Hou , Anxin Li , Lan Chen , Hiroki Harada
IPC: H04B7/0456
CPC classification number: H04B7/0478
Abstract: The present disclosure provides a base station and a terminal. The base station includes: a receiving unit configured to receive precoding matrix indicator information of a first granularity from a terminal; and a processing unit configured to perform channel reconstruction according to the precoding matrix indicator information to obtain a first channel, use a super-resolution network to perform interpolation and denoising processing on a channel having the first granularity to obtain a second channel, and perform downlink precoding on the second channel, wherein the first channel has the first granularity, the second channel has a second granularity, and the second granularity is finer than the first granularity.
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公开(公告)号：US20220174693A1
公开(公告)日：2022-06-02
申请号：US17442392
申请日：2019-03-26
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Yuki Takahashi , Satoshi Nagata , Xiaohong Zhang , Lihui Wang , Shaozhen Guo , Xiaolin Hou , Anxin Li
Abstract: A user terminal according to one aspect of the present disclosure includes a control section that generates a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) codebook including a first HARQ-ACK sub-codebook related to transport block (TB)-based physical downlink shared channel (PDSCH), a second HARQ-ACK sub-codebook related to code block group (CBG)-based PDSCH, and a third HARQ-ACK sub-codebook related to semi-persistent scheduling (SPS), and a transmitting section that transmits HARQ-ACK information bits corresponding to the HARQ-ACK codebook by using one uplink control channel. According to one aspect of the present disclosure, the HARQ-ACK codebook can be appropriately generated even when the multiple SPSs are used.
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公开(公告)号：US10952067B2
公开(公告)日：2021-03-16
申请号：US16776252
申请日：2020-01-29
Applicant: NTT DOCOMO, INC.
Inventor： Jing Wang , Anxin Li , Lan Chen , Xin Wang , Xiaolin Hou
Abstract: The present disclosure provides a terminal and a base station in a wireless communication system. The terminal includes: a processing unit for obtaining terminal network capability information about at least one of a computing capability, a storage capability, and a support capability for neural network of the terminal; and a transmitting unit for transmitting the terminal network capability information to a base station.
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公开(公告)号：US10405323B2
公开(公告)日：2019-09-03
申请号：US15000275
申请日：2016-01-19
Applicant: NTT DoCoMo, Inc.
Inventor： Yang Lan , Anxin Li , Huiling Jiang
Abstract: The present disclosure provides a method, User Equipment (UE) and base station for adjusting a Modulation and Coding Scheme (MCS). The method comprises: receiving, by a user equipment (UE), a first downlink data frame sent by a base station at a first moment, and estimating, by the UE, a first Signal to Interference and Noise Ratio (SINR) and a first Channel Quality Indicator (CQI) according to the first downlink data frame; estimating a second SINR and a second CQI according to a received second downlink data frame, wherein the second downlink data frame is sent by the base station at a second moment later than the first moment; calculating, by the UE, a MCS variation according to at least one of the first CQI, the second CQI, the first SINR or the second SINR; and feeding back, by the UE, the MCS variation to the base station.
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Patent Agency Ranking
公开(公告)号：US10298308B2
公开(公告)日：2019-05-21
申请号：US15058552
申请日：2016-03-02
Applicant: NTT DoCoMo, Inc.
Inventor： Xiaohang Chen , Anxin Li , Huiling Jiang
IPC: H04B7/06 , H04W72/12 , H04L25/03 , H04W72/06 , H04B7/0426 , H04B7/0452 , H04B17/26 , H04L5/00
Abstract: Embodiments of present invention provide a method for optimizing the rank of channel matrix, a wireless base and a mobile station. The method for optimizing the rank of channel matrix according to an embodiment of the present invention is applied to a wireless base to which multiple mobile stations are connected. The method includes: obtaining the historical state data of the multiple mobile stations; determining the optimal rank of channel matrix of a first mobile station of the multiple mobile stations according to the obtained historical state data of the multiple mobile stations; and transmitting to the first mobile station the optimal rank indicator indicating the optimal rank so as to cause the first mobile station to set its rank of channel matrix to be the optimal rank indicated by the optimal rank indicator.
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公开(公告)号：US10225763B2
公开(公告)日：2019-03-05
申请号：US15044410
申请日：2016-02-16
Applicant: NTT DoCoMo, Inc.
Inventor： Anxin Li , Huiling Jiang
Abstract: The present disclosure provides a method for re-transmitting data, wherein the method at a User Equipment (UE) side comprises: receiving, by a UE, a re-transmitted data packet from a base station, determining whether to perform data combination according to a Signal to Interference-Noise Ratio (SINR) of a first-transmitted data packet and a SINR of the re-transmitted data packet; when it is determined to perform data combination, performing, by the UE, data combination for the re-transmitted data packet according to information buffered by the UE and detecting the re-transmitted data packet according to a result of performed data combination; or when it is determined not to perform data combination, detecting, by the UE, the re-transmitted data packet. The present disclosure also provides a method for re-transmitting data at a base station side and a UE for implementing the above method.
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公开(公告)号：US09520976B2
公开(公告)日：2016-12-13
申请号：US14322265
申请日：2014-07-02
Applicant: NTT DoCoMo, Inc.
Inventor： Anxin Li , Atsushi Harada
IPC: H04L5/00
CPC classification number: H04L5/0053 , H04L5/0016 , H04L5/0037 , H04L5/0073
Abstract: The embodiments of the present invention provide a mobile communication method, a wireless base station and a mobile station. The mobile communication method according to the embodiment of the present invention is applied to the wireless base station. The method comprises: determining resource group offset information used for a mobile station; offsetting an initial physical channel resource group allocated to the mobile station according to the resource group offset information; determining cyclic shift information of demodulation reference signal used for the mobile station according to unused physical channel resources in the offset physical channel resource group; and transmitting the resource group offset information and the cyclic shift information to the mobile station.
Abstract translation: 本发明的实施例提供一种移动通信方法，无线基站和移动台。 根据本发明的实施例的移动通信方法被应用于无线基站。 该方法包括：确定用于移动台的资源组偏移信息; 根据资源组偏移信息，偏移分配给移动台的初始物理信道资源组; 根据所述偏移物理信道资源组中的未使用的物理信道资源确定用于所述移动台的解调参考信号的循环移位信息; 以及向所述移动台发送所述资源组偏移信息和所述循环移位信息。
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公开(公告)号：US20240243960A1
公开(公告)日：2024-07-18
申请号：US18579750
申请日：2021-08-10
Applicant: NTT DOCOMO, INC.
Inventor： Juan Liu , Wenjia Liu , Xiaolin Hou , Anxin Li , Lan Chen , Yoshihisa Kishiyama , Takahiro Asai
CPC classification number: H04L27/2672 , H03M7/70 , H04L27/265
Abstract: The present disclosure provides an electronic device, including: an input unit configured to obtain a sequence to be compressed, wherein the sequence to be compressed has Q time-domain symbol elements, and Q is an integer greater than zero; a processing unit configured to perform a zero-padding operation on the sequence to be compressed according to at least a part of a compression factor to determine a zero-embedded sequence, perform a discrete Fourier transform spreading operation according to the zero-embedded sequence to determine a spread sequence, and perform at least one of a data deletion operation and a data superimposition operation based on the spread sequence to determine a compressed sequence, wherein the compressed sequence has M frequency-domain symbols, M is an integer greater than zero, and M is less than or equal to Q.
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公开(公告)号：US11412480B2
公开(公告)日：2022-08-09
申请号：US16323555
申请日：2017-08-10
Applicant: NTT DOCOMO, INC.
Inventor： Shinpei Yasukawa , Satoshi Nagata , Qun Zhao , Jing Wang , Huan Wang , Liu Liu , Anxin Li , Huiling Jiang
Abstract: A user equipment including: a selection unit that selects, based on a result of sensing performed in a first time window and on a transmission interval of a signal, one or more resource candidates in a second time window after the first time window; and a transmission unit that selects a resource for transmitting a signal from the selected one or more resource candidates, and transmits the signal.
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