公开(公告)号：US20210013937A1

公开(公告)日：2021-01-14

申请号：US17033167

申请日：2020-09-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yi HUANG ,  Huangping JIN ,  Huiying ZHU ,  Yuanjie LI ,  Xiaoyan BI

IPC: H04B7/0456

Abstract: This application provides a communication method and a communications apparatus. The method includes: generating, by a terminal device, first indication information, where the first indication information is used to indicate a precoding matrix, the precoding matrix is applied to at least one antenna panel and includes at least one precoding vector, each precoding vector includes a plurality of subvectors, each subvector corresponds to an antenna port on the antenna panel and includes two polarization vectors, and each polarization vector is generated by performing weighted combination on a plurality of basis vectors; and sending the first indication information. In embodiments of this application, accuracy of a codebook can be improved.

公开(公告)号：US20200067588A1

公开(公告)日：2020-02-27

申请号：US16673395

申请日：2019-11-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping JIN ,  Wei HAN ,  Peng SHANG ,  Peng JIANG

IPC: H04B7/06 ,  H04B7/0456

Abstract: This application describes a data transmission method, a terminal device, and a network device. The method may include determining, by a terminal device, a reporting type of channel state information (CSI), where the reporting type is used to indicate a relationship between CSI of a beam that is currently reported by the terminal device and CSI of a beam that is previously reported by the terminal device in a current reporting period. The method may also include sending, by the terminal device, CSI of N beams to a network device based on a reporting type and a codebook parameter, where the codebook parameter is used to indicate a quantity N of the currently reported beams, and N is an integer greater than or equal to 1. According to the data transmission method, the terminal device, and the network device described in the embodiments of this application, CSI reporting flexibility can be improved, thereby improving system performance.

公开(公告)号：US20190334594A1

公开(公告)日：2019-10-31

申请号：US16503598

申请日：2019-07-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD

Inventor： Huangping JIN ,  Wei HAN ,  Xiaoyan BI ,  Peng SHANG

IPC: H04B7/0456 ,  H04L25/03

Abstract: Embodiments can provide a precoding matrix indicating method, a precoding matrix determining method, a receive end device, and a transmit end device. In the precoding matrix indicating method, component matrices of an ideal precoding matrix and a weight of each component matrix can be determined based on at least one basic codebook. A dimension of each component matrix is the same as a dimension of the ideal precoding matrix, and a column vector of each component matrix is selected from column vectors of one of the at least one basic codebook. A precoding matrix indicator can be sent. The precoding matrix indicator can indicate the component matrices and the weight of each component matrix. With this, an ideal precoding matrix is approximately represented in a form of a weighted sum of a plurality of component matrices so that feedback overheads caused by feeding back a precoding matrix can be reduced.

公开(公告)号：US20190115960A1

公开(公告)日：2019-04-18

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

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：US20240348478A1

公开(公告)日：2024-10-17

申请号：US18749904

申请日：2024-06-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiaxuan CHEN ,  Haicun HANG ,  Yiqun WU ,  Jing LIANG ,  Huangping JIN

IPC: H04L25/02 ,  H03M7/30

CPC classification number: H04L25/0202 ,  H03M7/70

Abstract: This disclosure relates to a communication method and apparatus. A terminal device obtains M channel estimation results corresponding to M time units, where M is greater than 1. The terminal device performs joint compression on the M channel estimation results by using an encoder network, to obtain N pieces of compression information. The terminal device sends the N pieces of compression information to an access network device. Because the terminal device performs joint compression, correlation between downlink channels at different time points is fully utilized. The access network device recovers the N pieces of compression information obtained through joint compression, so that more accurate and effective downlink channel information can be obtained.

公开(公告)号：US20240137082A1

公开(公告)日：2024-04-25

申请号：US18526282

申请日：2023-12-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hongzhe SHI ,  Min CHENG ,  Wenkai ZHANG ,  Jing LIANG ,  Zhitang CHEN ,  Yiqun WU ,  Huangping JIN

IPC: H04B7/0456 ,  H04B7/0452

CPC classification number: H04B7/0456 ,  H04B7/0452

Abstract: A communication method and apparatus. A terminal device determines channel state information based on S indexes of S vectors. Each of the S vectors is included in a first vector quantization dictionary. The first vector quantization dictionary includes N1 vectors, where N1 and S are both positive integers. The terminal device sends the channel state information to a network device. Because a vector included in the vector quantization dictionary usually has a relatively large dimension, quantizing channel information by using the first vector quantization dictionary is equivalent to performing dimension expansion on the channel information or maintaining a relatively high dimension. High-precision feedback is implemented by using relatively low signaling overheads.

公开(公告)号：US20240048216A1

公开(公告)日：2024-02-08

申请号：US18486283

申请日：2023-10-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye WU ,  Liuliu JI ,  Huangping JIN

IPC: H04B7/06 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04B7/06968 ,  H04L5/0048 ,  H04L25/0226

Abstract: Embodiments of this application provide a communication method and a communication apparatus, to support flexible configuration of QCL information of different reference signal ports, improve a success rate of performing channel estimation or channel measurement on a transport layer by the reference signal port, and improve communication efficiency. In the method, a transmit end determines first indication information, where the first indication information is used to configure a first reference signal port, and the configuration indicates first quasi co-location QCL information of the first reference signal port; and then the transmit end sends the first indication information to a receive end.

公开(公告)号：US20230361836A1

公开(公告)日：2023-11-09

申请号：US18352896

申请日：2023-07-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yiling YUAN ,  Shibin GE ,  Li FAN ,  Jie WANG ,  Huangping JIN

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

CPC classification number: H04B7/0626 ,  H04L5/0048 ,  H04B7/0456 ,  H04B7/0639

Abstract: This application provides a channel information obtaining method and a related device. In the method, first indication information may be received, where the first indication information indicates one of a plurality of parameter configuration combinations of a reference signal, and the plurality of parameter configuration combinations are associated with a same codebook. A terminal device may feed back channel state information based on the indicated parameter configuration combination.

公开(公告)号：US20230122302A1

公开(公告)日：2023-04-20

申请号：US18068863

申请日：2022-12-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mingzhe WANG ,  Xiang REN ,  Huangping JIN ,  Xiaoyan BI

IPC: H04W24/10 ,  H04W16/28 ,  H04L5/00

Abstract: Embodiments of this application provide a measurement reporting method and apparatus, to improve poor data transmission performance caused by inaccurate channel state information feedback. The method includes: performing channel measurement based on a downlink reference signal from a network device, and reporting a measurement result to the network device. The measurement result indicates T resource elements and a superposition coefficient, and the resource element is determined based on at least one of the following base vectors: a time domain base vector and a receive side spatial domain base vector, and T is an integer greater than 0. In embodiments of this application, a channel feature of a channel in an angle domain can be more accurately indicated by using the receive side spatial domain base vector, and a time variant feature of the channel can be reflected by using the time domain base vector.

公开(公告)号：US20230064117A1

公开(公告)日：2023-03-02

申请号：US17982239

申请日：2022-11-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhimeng ZHONG ,  Huangping JIN ,  Haifan YIN ,  Xiaoyan BI ,  Li FAN

IPC: H04B7/0456 ,  H04L5/00 ,  H04L25/02

Abstract: Example channel measurement methods and communications apparatus are described. One example method includes receiving a precoded reference signal by a terminal device, where the precoded reference signal is obtained by precoding a reference signal based on K angle vectors and L delay vectors. First indication information is generated and sent, where the first indication information indicates P weighting coefficients corresponding to P angle-delay pairs. The P weighting coefficients are determined by using the precoded reference signal. The P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix. Each angle-delay pair includes one of the K angle vectors and one of the L delay vectors. The K angle vectors and the L delay vectors are determined based on uplink channel measurement.