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：US20250125996A1

公开(公告)日：2025-04-17

申请号：US19002908

申请日：2024-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hanqing WANG ,  Xiaohan WANG ,  Huangping JIN

IPC: H04L25/02 ,  H04L5/00

Abstract: A reference signal indication method and an apparatus are disclosed. The method includes: a terminal device receives a plurality of pieces of first information from a plurality of network devices, where each of the plurality of pieces of first information indicates that at least one reference signal of the corresponding network device is for estimating a joint equivalent channel; receives a plurality of pieces of second information from the plurality of network devices, where each of the plurality of pieces of the second information indicates a port of the at least one reference signal; receives a plurality of pieces of coherent joint transmission data from the plurality of network devices, where one of the plurality of pieces of coherent joint transmission data includes at least one data stream and the at least one corresponding reference signal; and determines at least one joint equivalent channel based on the at least one reference signal of the plurality of network devices.

公开(公告)号：US20250096976A1

公开(公告)日：2025-03-20

申请号：US18928807

申请日：2024-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun XU ,  Junhui GAO ,  Huangping JIN

IPC: H04L5/00 ,  H04W72/1263

Abstract: A demodulation reference signal (DMRS) sending method and an apparatus, and relates to the communication field. The method includes: a terminal device receives indication information, where the indication information indicates an expansion manner of DMRS ports in at least one of a plurality of code division multiplexing (CDM) groups corresponding to one DMRS configuration type; and sends DMRSs via DMRS ports obtained through expansion in the at least one CDM group, where the DMRS ports in the at least one CDM group include legacy DMRS ports and expanded DMRS ports.

公开(公告)号：US20240322885A1

公开(公告)日：2024-09-26

申请号：US18735520

申请日：2024-06-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Junhui GAO ,  Huangping JIN

IPC: H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0626 ,  H04B7/06968 ,  H04L5/0051

Abstract: Embodiments of this application relate to the field of communication technologies and provide a channel state information feedback method, and an apparatus, to improve interaction efficiency of a communication system and reduce air interface signaling overheads. The method includes the following operations: A network device determines configuration information, where the configuration information indicates resources of N reference signals for channel measurement, and N is a positive integer greater than 1. The network device sends the configuration information and the N reference signals to a terminal device. The network device receives channel state indication information sent by the terminal device, where the indication information is obtained by the terminal device by measuring the N reference signals based on the configuration information.

公开(公告)号：US20240107509A1

公开(公告)日：2024-03-28

申请号：US18509898

申请日：2023-11-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haicun HANG ,  Xiaohan WANG ,  Liuliu JI ,  Huangping JIN ,  Xiang REN

IPC: H04W72/0453 ,  H04L1/1607 ,  H04L5/00 ,  H04W72/12

CPC classification number: H04W72/0453 ,  H04L1/1614 ,  H04L5/0051 ,  H04W72/12

Abstract: A resource scheduling method and a communication apparatus. In the method, a terminal device receives first indication information for determining a quantity of layers to be scheduled corresponding to each frequency domain unit in a plurality of frequency domain units, or for determining a quantity of layers to be scheduled corresponding to each frequency domain unit group in one or more frequency domain unit groups, where one frequency domain unit group includes one or more frequency domain units, one frequency domain unit includes one or more frequency domain resources with a same quantity of layers to be scheduled; and determines, based on the first indication information, a quantity of layers to be scheduled that are on frequency domain resources for data transmission, where at least two of the frequency domain resources for data transmission have different quantities of layers to be scheduled.

公开(公告)号：US20220407616A1

公开(公告)日：2022-12-22

申请号：US17891267

申请日：2022-08-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping JIN ,  Shi JIN ,  Xiang REN ,  Xiaoyan BI

IPC: H04B17/373 ,  H04W24/08

Abstract: A method for predicting channel state information includes determining, by a user equipment, channel prediction information based on a reference signal from a network device, and sending channel prediction information. The channel prediction information is useable to predict the channel information.

公开(公告)号：US20220329305A1

公开(公告)日：2022-10-13

申请号：US17852957

申请日：2022-06-29

Applicant: HUAWEI TECHNOLOGIES CO, LTD.

Inventor： Xiang REN ,  Huangping JIN ,  Xiaohan WANG ,  Shibin GE ,  Yiling YUAN

IPC: H04B7/06

Abstract: This application describes a channel information feedback method and a communication apparatus. The method includes a terminal device that receives configuration information sent by a network device, where the configuration information is used to configure a feedback mode of channel information. The terminal device may feed back current channel information to the network device when the feedback mode configured by using the configuration information is a first mode. The terminal device may alternatively feeds back predicted channel information to the network device when the feedback mode configured by using the configuration information is a second mode. System performance is therefore improved by the method described in this application because channel information feedback requirements in different scenarios can be met. In particular, a problem that data transmission performance deteriorates because channel information expires in a moving scenario can be resolved by feeding back the predicted channel information.