公开(公告)号：US20200260312A1

公开(公告)日：2020-08-13

申请号：US16832290

申请日：2020-03-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye Wu ,  Huangping Jin ,  Xiaoyan Bi ,  Wei Han

IPC: H04W24/10 ,  H04W28/06 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/06

Abstract: Embodiments of the present invention provide a channel measurement method. The method includes: obtaining, for a to-be-measured frequency band including at least one reporting subband and at least one missing subband, channel state information of each reporting subband and channel state information of each missing subband, where the channel state information of each reporting subband is obtained based on channel estimation, and the channel state information of each missing subband is obtained according to a reference rule with reference to channel state information of a reporting subband that is indicated by the reference rule and that is in the at least one reporting subband; and sending a measurement report of the to-be-measured frequency band to a transmit end device, where the measurement report includes the channel state information of each reporting subband in the at least one reporting subband.

公开(公告)号：US20200244330A1

公开(公告)日：2020-07-30

申请号：US16829389

申请日：2020-03-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huangping Jin ,  Peng Jiang ,  Wei Han ,  Peng Shang

IPC: H04B7/06

Abstract: A channel state information feedback method includes: generating, by a transmit-end device, codebook indication information of K transport layers, where K is an integer greater than or equal to 1; and for each of at least one of the K transport layers, the codebook indication information includes narrowband superposition coefficients of N sub-bands of the layer, where a quantity of the narrowband superposition coefficients of the N sub-bands is less than R(L−1)*N, N is an integer greater than or equal to 2, R is a quantity of polarization directions and R is an integer greater than or equal to 1, and L is a quantity of pieces of beam information used by the K transport layers and L is an integer greater than or equal to 2; and sending, by the transmit-end device, the codebook indication information.

公开(公告)号：US10594369B2

公开(公告)日：2020-03-17

申请号：US16504354

申请日：2019-07-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Han ,  Huangping Jin ,  Xiaoyan Bi

IPC: H04B7/0417 ,  H04B7/06

Abstract: Embodiments of the present invention provide a channel information feedback method, a channel information determining method, a receive end device, and a transmit end device. The channel information feedback method includes: generating at least one piece of description information for each of a plurality of subbands included in a wideband, where each piece of description information is used to describe a description vector of a channel matrix corresponding to the subband, the description information includes at least one of a vector parameter and a weighting parameter; and sending the at least one piece of description information. The embodiments of the present invention further provide a channel information determining method, a receive end device, and a transmit end device. A precoding effect can be improved when precoding is performed based on the description vector fed back in the technical solutions provided in the embodiments of the present invention.

公开(公告)号：US10447357B2

公开(公告)日：2019-10-15

申请号：US16205336

申请日：2018-11-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Peng Jiang ,  Huangping Jin ,  Wei Han ,  Peng Shang

IPC: H04B7/0456 ,  H04B7/06

Abstract: This application disclose a method for indicating and determining a precoding vector related to precoding technologies to increase an overall system performance gain. The method may include: generating indication information, and sending the indication information. The indication information is used to indicate a plurality of component vectors of a precoding vector and a combination coefficient of each component vector. The combination coefficient of the component vector includes at least one of the following types: a wideband amplitude coefficient, a narrowband amplitude coefficient, and a narrowband phase coefficient.

公开(公告)号：US20190159152A1

公开(公告)日：2019-05-23

申请号：US16256204

申请日：2019-01-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jin Liu ,  Lei Huang ,  Xiaoyan Bi ,  Huangping Jin

IPC: H04W56/00 ,  H04W72/04 ,  H04W72/02

Abstract: A synchronization processing method, including sending, in a first time unit, by a network device, a first synchronization signal having one or more first beams to a terminal device, and sending, in a second time unit, a second synchronization signal having one or more second beams to the terminal device. The first synchronization signal and the second synchronization signal cause the terminal device to determine, according to the first synchronization signal and the second synchronization signal, an optimal transmit beam of the network device for the terminal device from the one or more first beam and the one or more second beams, and further to determine a time sequence in which the optimal transmit beam is located. A time offset corresponding to each first beam and second beams is different, and is a difference between a time sequence of the beams and a time sequence of the second beams.

公开(公告)号：US12261662B2

公开(公告)日：2025-03-25

申请号：US17213404

申请日：2021-03-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongping Zhang ,  Baojin Li ,  Huangping Jin ,  Tie Li

IPC: H04B7/06 ,  H04B7/0417 ,  H04W72/0453 ,  H04W72/23

Abstract: This application relates to channel state information (CSI) feedback methods and devices. One method comprises: receiving, by a terminal device from a network device, indication information of a channel state information (CSI) reporting band; determining, by the terminal device, based on the indication information, a subset of subbands in a bandwidth part configured for the terminal device for CSI reporting; determining, by the terminal device, CSI reporting priorities of the subset of the subbands based on index numbers of the subset of the subbands, wherein the index numbers of the subset of the subbands are numbered in an ascending numerical order; and sending, by the terminal device to the network device, CSI of M subbands with higher CSI reporting priorities in the subset of the subbands compared to a remainder of subbands in the subset of subbands.

公开(公告)号：US20240405834A1

公开(公告)日：2024-12-05

申请号：US18805458

申请日：2024-08-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping Jin ,  Xiaohan Wang ,  Xiaoyan Bi

IPC: H04B7/06

Abstract: This application provides a precoding matrix indicating and determining method and a communications apparatus. The method includes: generating, by a terminal device, first indication information, and sending the first indication information to a network device, where the first indication information indicates a spatial domain vector, a frequency domain vector, and a weighting coefficient that are used to construct a precoding matrix. When a value of a rank Z is greater than 2, Z transport layers include at least one first-type transport layer, and a maximum quantity M1 of frequency domain vectors reported for the first-type transport layer satisfies: M 1 = ⌊ p 1 × N 3 R ⌋ , wherein p1 is a preconfigured coefficient for determining the maximum quantity of frequency domain vectors reported for the first-type transport layer, 1≥p1>0, R is a preconfigured value, N3 is a length of a frequency domain vector, Z>2, and R, N3, and Z are all positive integers.

公开(公告)号：US20240356615A1

公开(公告)日：2024-10-24

申请号：US18759146

申请日：2024-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ting Li ,  Xiaohan Wang ,  Huangping Jin

IPC: H04B7/06

CPC classification number: H04B7/0639 ,  H04B7/0617 ,  H04B7/0634

Abstract: This application discloses a channel state information feedback method and apparatus, a medium, and a program product. A terminal obtains a long-period reporting amount of a precoding matrix indicator (PMI) in channel state information. N1 characteristic subspace beams are represented by a linear combination of M1 DFT base vectors in a first group of DFT base vectors, and N2 characteristic subspace beams are represented by a linear combination of M2 DFT base vectors in a second group of DFT base vectors. The long-period reporting amount includes indication information of the M1 DFT base vectors, indication information of the M2 DFT base vectors, a linear combination coefficient of the M1 DFT base vectors, and a linear combination coefficient of the M2 DFT base vectors. The terminal sends the long-period reporting amount of the PMI to an access network device.

公开(公告)号：US12015464B2

公开(公告)日：2024-06-18

申请号：US17541997

申请日：2021-12-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ren ,  Xiaohan Wang ,  Huangping Jin ,  Xiaoyan Bi

IPC: H04B7/06 ,  H04B7/0456

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04B7/0639

Abstract: A channel measurement method and a communications apparatus, the method including generating, by a terminal device, first indication information, where the first indication information indicates one or more component features of a time-varying feature, and further indicates a weighting coefficient of each component feature of the one or more component features, and the one or more component features and the weighting coefficient of each component feature represent the time-varying feature of a channel, and sending, by the terminal device, the first indication information to a network device.

公开(公告)号：US20230379020A1

公开(公告)日：2023-11-23

申请号：US18362982

申请日：2023-08-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaohan Wang ,  Huangping Jin ,  Haicun Hang

IPC: H04B7/0456 ,  H04L5/00

CPC classification number: H04B7/0456 ,  H04L5/0048

Abstract: This disclosure provides a precoding method and apparatus, to improve precision of an uplink precoding matrix. The method includes: receiving a plurality of precoded downlink reference signals; measuring the plurality of downlink reference signals and determining an uplink precoding vector corresponding to an uplink data stream. This can reduce signal interference between multiple users, and improve signal quality.