公开(公告)号：US11290906B2

公开(公告)日：2022-03-29

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：US20220094412A1

公开(公告)日：2022-03-24

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

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：US11239895B2

公开(公告)日：2022-02-01

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：US11153055B2

公开(公告)日：2021-10-19

申请号：US16568681

申请日：2019-09-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Han ,  Jinyao Liang ,  Ruiqi Zhang ,  Ting Wang ,  Huangping Jin ,  Shengyue Dou ,  Yuanjie Li

IPC: H04L5/00 ,  H04B17/309 ,  H04W72/04

Abstract: One example method for measuring a channel state information reference signal includes receiving, from a network device, a partial channel state information reference signal resource sets selected from a plurality of channel state information reference signal resource sets and indication information indicating one or more resource sets for channel measurement, which are from the partial channel state information reference signal resource sets, and performing channel measurement by using the one of the one or more resource sets for channel measurement indicated by the indication information.

公开(公告)号：US11146317B2

公开(公告)日：2021-10-12

申请号：US16810750

申请日：2020-03-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04B7/0456 ,  H04B7/0417 ,  H04B7/06 ,  H04L5/00

Abstract: A method includes generating, by a processor, first indication information based on N reference signals, where N is an integer and N≥2. The first indication information indicates a plurality of component vectors for constructing a precoding matrix and a superposition coefficient of each component vector of each of M precoding vectors for constructing the precoding matrix upon which a precoding of M reference signals is based, where M is an integer and 1≤M

公开(公告)号：US11133847B2

公开(公告)日：2021-09-28

申请号：US17094252

申请日：2020-11-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaohan Wang ,  Huangping Jin ,  Xiaoyan Bi

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

Abstract: This application discloses a channel estimation method and apparatus, and relates to the field of communications technologies, to help reduce indication overheads. The method may include: generating and sending indication information. The indication information indicates K N-dimensional spatial-domain component vectors, L M-dimensional frequency-domain component vectors, and a weight matrix, for constructing an M×N-dimensional spatial-frequency matrix, or an M×N or N×M spatial-frequency matrix.

公开(公告)号：US10778299B2

公开(公告)日：2020-09-15

申请号：US16520045

申请日：2019-07-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping Jin ,  Wei Han ,  Peng Shang ,  Xiaoyan Bi

IPC: H04B7/0456 ,  H04B7/0417 ,  H04B7/04 ,  H04B7/06

Abstract: The present invention belongs to the field of communications technologies, and discloses a channel state information CSI feedback method and an apparatus. The method includes: determining a codebook of at each transport layer CSI of user equipment UE, where the codebook of the CSI at each transport layer of the UE is: W=W1×W2, an element Xi in W2 is a weighting coefficient corresponding to each codeword in W1, and i is an integer greater than or equal to 1 and less than or equal to K; determining a quantity Ni of bits occupied by a quantized value of an ith element in W2, where quantized values of at least two elements in W2 occupy different quantities of bits; and feeding back the quantized value of the ith element to a network device based on Ni.

公开(公告)号：US10601543B2

公开(公告)日：2020-03-24

申请号：US16540086

申请日：2019-08-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jian Wang ,  Huangping Jin ,  Shengchen Dai ,  Rong Li ,  Yinggang Du ,  Jun Wang ,  Yiqun Ge

IPC: H04L12/28 ,  H04L1/00 ,  H04B7/06 ,  H04J1/16

Abstract: The application provides manner for communicating channel state information (CSI) in a communication network. A preset length is used for equalizing lengths of CSI to be reported. The preset length is determined based on a quantity of CSI-reference signal (RS) ports. A communication device determines whether a total length of one or more indication information items to be included in the CSI is less than the preset length. If the total length of the one or more indication information items to be included in the CSI is less than the preset length, the communication device adds one or more padding bits, to obtain a CSI bit sequence including the one or more indication information items and the one or more padding bits. A total length of the CSI bit sequence is consistent with the preset length. The communication device then outputs the CSI bit sequence.

公开(公告)号：US20190181929A1

公开(公告)日：2019-06-13

申请号：US16237509

申请日：2018-12-31

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Shibin Ge ,  Wei Han ,  Xiaoyan Bi ,  Hongzhe Shi ,  Ye Wu ,  Huangping Jin

IPC: H04B7/0456 ,  H04B7/06

Abstract: This application provides a technical solution for rank indication, and especially when a CQI number is not configured or a CQI number is 1, a network device configures a rank indication restriction parameter as that at least one of ranks whose index numbers are 0, 1, 2, and 3 is allowed to be reported by the terminal device; or even if the network device does not perform the foregoing configuration, and none of the ranks whose index numbers are 0, 1, 2, and 3 is allowed to be reported, the terminal device may select at least one rank for RI reporting, so as to resolve a problem that a system cannot work. In addition, according to embodiments of this application, bit overheads required for RI reporting may further be reduced.

公开(公告)号：US20250047525A1

公开(公告)日：2025-02-06

申请号：US18919867

申请日：2024-10-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiaxuan Chen ,  Haicun Hang ,  Huangping Jin ,  Jing Liang

IPC: H04L25/02

Abstract: A terminal device obtains M channel estimation results. The terminal device jointly compresses the M channel estimation results by using a first encoder network, to obtain N pieces of compressed information and first state information, where the first state information represents downlink channel information, the downlink channel information includes information about downlink channels corresponding to the M channel estimation results, and the first state information is used to determine next input information of the first encoder network. The terminal device sends the N pieces of compressed information to an access network device. Downlink channels are correlated in time domain. When compressed information is obtained, in addition to a current downlink channel, a historical downlink channel is also referenced.