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：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：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：US10516462B2

公开(公告)日：2019-12-24

申请号：US16188791

申请日：2018-11-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lu Wu ,  Wei Han ,  Peng Shang ,  Jin Liu ,  Xiaoyan Bi ,  Shibin Ge ,  Dageng Chen

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

Abstract: A radio access node (RAN) and method of operation of the RAN are provided. The RAN includes a massive multiple-input-multiple-output (MIMO) antenna array. The RAN includes a processing hardware configured to carry out a communication method that includes receiving a digital data stream for transmission on a time-frequency resource. The RAN precodes the digital data stream using a digital beamforming stage to render a precoded digital downlink data stream for downlink data stream signal transmission to a user equipment. The digital beamforming stage includes a first precoding stage configured according to a long-term matrix, and a second precoding stage configured according to a short-term matrix. The RAN is further configured to generate a downlink data stream transmission signal to the user equipment in accordance with the precoded digital downlink data stream.

公开(公告)号：US10985824B2

公开(公告)日：2021-04-20

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：US10979113B2

公开(公告)日：2021-04-13

申请号：US17005921

申请日：2020-08-28

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 disclosure relates to channel state information (CSI) receiving methods and apparatus. One example method includes transmitting a pilot, and receiving feedback of W1 and W2 for each transport layer which are determined based on the pilot, where W1 and W2 are used to form a combined vector W for each transport layer, W=W1×W2, W1=[b1 b2 . . . bK], bi is a vector to be combined, W2=[X1 X2 . . . XK]T, Xi is a weighting coefficient corresponding to bi, K is a quantity of vectors in W1, K is a positive integer which is greater than 1, i is an integer, 1≤i≤K, and quantities of bits for feeding back at least two elements in W2 are different from each other.

公开(公告)号：US10938460B2

公开(公告)日：2021-03-02

申请号：US16263984

申请日：2019-01-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Peng Shang ,  Lu Wu ,  Xiaoyan Bi

IPC: H04W4/00 ,  H04B7/06 ,  H04W72/04 ,  H04W16/28 ,  H04W24/10 ,  H04B7/0413

Abstract: The present invention discloses an inter-base station beam configuration and management method, a base station, user equipment, and a system. The method includes: receiving, by user equipment, a beam signal sent by a base station; determining, by the user equipment, a receive beam based on the sent beam signal; receiving, by the base station, a beam signal sent by a terminal device; determining, by the base station, a receive beam based on the sent beam signal; performing dynamic selection and fast beam switching between base stations in combination with a coordinated multi-point technology; and performing fast beam alignment between the base station end with the user equipment end. This application can effectively implement fast beam switching and alignment between base stations and support dynamic base station selection, thereby improving link reliability.

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：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.