公开(公告)号：US12224822B2

公开(公告)日：2025-02-11

申请号：US18502785

申请日：2023-11-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaohan Wang ,  Huangping Jin ,  Xiaoyan Bi

IPC: H04B7/0456 ,  H04B7/06 ,  H04L5/00

Abstract: This disclosure provides methods and apparatuses for precoding in wireless communications. In an implementation, a method includes: receiving, from a terminal device, first indication information, wherein the first indication information indicates L1 space domain vectors in a space domain vector set, K1 frequency domain vectors in a frequency domain vector set, and T1 space-frequency component matrices, wherein a precoding vector of one or more frequency domain units is determined by a weighted sum of the T1 space-frequency component matrices, wherein the L1 space domain vectors and the K1 frequency domain vectors correspond to M1 space-frequency component matrices that comprise the T1 space-frequency component matrices, and determining the precoding vector of the one or more frequency domain units based on the first indication information.

公开(公告)号：US12206472B2

公开(公告)日：2025-01-21

申请号：US18155205

申请日：2023-01-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping Jin ,  Zhimeng Zhong ,  Haifan Yin ,  Xiaoyan Bi

IPC: H04B7/0456 ,  H04B7/0413 ,  H04W72/23

Abstract: A channel measurement method and a communications apparatus. The method includes: a terminal device receives precoded reference signals from a network device, where the precoded reference signals are obtained by precoding reference signals based on K angle vectors; and generates and sends first indication information, where the first indication information is used to indicate P weighting coefficients corresponding to P angle-delay pairs, the P weighting coefficients are determined based on the precoded reference signals, each of the P angle-delay pairs includes one angle vector and one delay vector corresponding to the angle vector, a delay vector corresponding to each angle vector is preconfigured, each angle vector and the delay vector corresponding to each angle vector are obtained through uplink channel measurement, and the P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix.

公开(公告)号：US20240396590A1

公开(公告)日：2024-11-28

申请号：US18788043

申请日：2024-07-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huan Sun ,  Xiaoyan Bi ,  Lei Dong

IPC: H04B7/04 ,  H04B7/024

Abstract: A communication method and a communication apparatus are provided. The method includes: a terminal device obtains a channel measurement result, wherein the channel measurement result is obtained by the terminal device based on at least two reflections by an antenna element set of an intelligent reflecting surface for a first signal sent by a network device, the first signal is a signal for channel measurement, and the antenna element set includes at least two antenna elements; and the terminal device determines a path difference between the antenna elements of the intelligent reflecting surface based on the channel measurement result.

公开(公告)号：US12143320B2

公开(公告)日：2024-11-12

申请号：US17669801

申请日：2022-02-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenquan Hu ,  Min Zhang ,  Bengt Lindoff ,  Thorsten Schier ,  Han Zhou ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04J13/00 ,  H04W72/20

Abstract: A client device for associating phase tracking reference signal (PTRS) antenna ports to demodulation reference signal (DMRS) antenna ports, the client device being configured obtain configuration information related to a set of PTRS antenna ports, obtain control information indicating at least one of one or more codewords, a set of DMRS antenna ports assigned to the one or more codewords, or transmission configuration indication (TCI) information indicating one or more TCI states, and determine an association between the set of PTRS antenna ports and the set of DMRS antenna ports based on the configuration information related to the set of PTRS antenna ports and the control information.

公开(公告)号：US20240187053A1

公开(公告)日：2024-06-06

申请号：US18440664

申请日：2024-02-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04B7/0456 ,  H04B7/0417 ,  H04L25/02

CPC classification number: H04B7/0456 ,  H04L25/0204 ,  H04B7/0417

Abstract: Embodiments of this application disclose a channel estimation method and apparatus, and relate to the field of communications technologies, to help reduce indication overheads. The method may include: generating and sending indication information, where the indication information is used to indicate M N-dimensional precoding vectors, each precoding vector is applied to one of M frequency bands, the M N-dimensional precoding vectors form a space-frequency matrix, and the space-frequency matrix is generated by performing weighted combination on a plurality of space-frequency component matrices, where the space-frequency matrix is an M×N-dimensional space-frequency vector or an X×Y space-frequency matrix, X and Y are one and the other of M and N, M≥1, N24 2, and both M and N are integers.

公开(公告)号：US11943014B2

公开(公告)日：2024-03-26

申请号：US17541668

申请日：2021-12-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haifan Yin ,  Huangping Jin ,  Shibin Ge ,  Xiaoyan Bi

IPC: H04B1/10 ,  H04B7/0417 ,  H04B7/0456

CPC classification number: H04B7/0417 ,  H04B7/0456

Abstract: This application provides a channel measurement method and a communications apparatus. The method includes: A terminal device generates first indication information and sends the first indication information to a network device, where the first indication information is determined based on received precoded reference signals of P ports and is used to indicate Q ports in the P ports; the P ports correspond to P angle-delay pairs; each angle-delay pair includes one angle vector and one delay vector; the precoded reference signal of each of the P ports is obtained by precoding a reference signal based on one angle vector and one delay vector; and the Q ports correspond to Q angle-delay pairs in the P angle-delay pairs.

公开(公告)号：US11929801B2

公开(公告)日：2024-03-12

申请号：US18304132

申请日：2023-04-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04L25/02 ,  H04B7/0417 ,  H04B7/0456

CPC classification number: H04B7/0456 ,  H04L25/0204 ,  H04B7/0417

Abstract: Embodiments of this application provide a channel estimation method and apparatus, and relate to the field of communications technologies, to help reduce indication overheads. The method includes: generating and sending indication information, wherein the indication information is used to indicate M N-dimensional precoding vectors, each precoding vector is applied to one of M frequency bands, the M N-dimensional precoding vectors form a space-frequency matrix, and the space-frequency matrix is generated by performing weighted combination on a plurality of space-frequency component matrices, wherein the space-frequency matrix is an M×N-dimensional space-frequency vector or an X×Y space-frequency matrix, X and Y are one and the other of M and N, M≥1, N≥2, and both M and N are integers.

公开(公告)号：US11804924B2

公开(公告)日：2023-10-31

申请号：US17408941

申请日：2021-08-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haicun Hang ,  Shibin Ge ,  Liuliu Ji ,  Xiaohan Wang ,  Xiaoyan Bi

IPC: H04J3/14 ,  H04L1/00

CPC classification number: H04L1/0038

Abstract: A search space blind detection method and a communication apparatus. The method includes: a terminal receives indication information that corresponds to a first search space set and that is sent by a network device, where the indication information is used to indicate one or more search space groups, one search space group includes at least two search spaces having an association relationship, and at least one search space in one search space group belongs to the first search space set; and then, the terminal determines, based on the indication information, a quantity of blind detection times corresponding to the first search space set. The quantity of blind detection times corresponding to the first search space set is determined by considering an association relationship between a plurality of search spaces.

公开(公告)号：US11777683B2

公开(公告)日：2023-10-03

申请号：US17666318

申请日：2022-02-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ren ,  Yong Liu ,  Shibin Ge ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04L5/02 ,  H04L5/10

CPC classification number: H04L5/0051 ,  H04L5/0092 ,  H04L5/023 ,  H04L5/10

Abstract: Embodiments of this application disclose a method and an apparatus for transmitting a DMRS, and relate to the field of communications technologies. The method and the apparatus are applicable to an NR system. The method for transmitting a DMRS may include: determining a time-frequency resource used to carry a DMRS; and then sending the DMRS by using the time-frequency resource.

公开(公告)号：US20230299820A1

公开(公告)日：2023-09-21

申请号：US18304132

申请日：2023-04-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04B7/0456 ,  H04L25/02

CPC classification number: H04B7/0456 ,  H04L25/0204 ,  H04B7/0417

Abstract: Embodiments of this application disclose a channel estimation method and apparatus, and relate to the field of communications technologies, to help reduce indication overheads. The method may include: generating and sending indication information, where the indication information is used to indicate M N-dimensional precoding vectors, each precoding vector is applied to one of M frequency bands, the M N-dimensional precoding vectors form a space-frequency matrix, and the space-frequency matrix is generated by performing weighted combination on a plurality of space-frequency component matrices, where the space-frequency matrix is an M×N-dimensional space-frequency vector or an X×Y space-frequency matrix, X and Y are one and the other of M and N, M≥1, N≥2, and both M and N are integers.