公开(公告)号：US11431384B2

公开(公告)日：2022-08-30

申请号：US17157318

申请日：2021-01-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping Jin ,  Xiaohan Wang ,  Xiaoyan Bi

IPC: H04B7/0417 ,  H04B7/0456 ,  H04B7/06 ,  H04L25/02

Abstract: Embodiments of this application disclose a channel estimation method and apparatus, and relate to the field of communications technologies. The method may include: generating and sending indication information, where the indication information is used to indicate L space-frequency basis vectors for constructing an M×N-dimensional space-frequency vector; the space-frequency vector includes M N-dimensional precoding vectors, each precoding vector is used in one of M frequency bands, and the space-frequency vector is generated by performing a weighted combination on L space-frequency component vectors; each of the L space-frequency component vectors is a vector including M×N elements that are in one of the L space-frequency basis vectors, and each of the L space-frequency basis vectors is an Nf×N-dimensional vector; the space-frequency basis vector is a three-dimensional oversampled (DFT) vector; and L≥2, Nf≥M≥1, N≥2, and L, M, N, and Nf are all integers.

公开(公告)号：US11239950B2

公开(公告)日：2022-02-01

申请号：US16697115

申请日：2019-11-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Han ,  Yong Liu ,  Shibin Ge ,  Huangping Jin ,  Xiaoyan Bi ,  Xiang Ren

IPC: H04L1/06 ,  H04L5/00 ,  H04B7/06 ,  H04L1/00

Abstract: An apparatus and method are provided for a quantity and size of subbands in a channel state information (CSI) reporting band for flexibility and reduced complexity of terminal addressing. The method includes: determining a channel state information subband size based on a bandwidth part (BWP), determining a quantity of channel state information subbands included in a channel state information reporting band based on (i) a carrier bandwidth (CC bandwidth), (ii) the BWP bandwidth or (iii) a channel state information reference signal (CSI-RS) bandwidth and the channel state information subband size. The method further includes determining an actual quantity of resource blocks included in a starting subband and an actual quantity of resource blocks in an ending subband in the channel state information subband.

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：US10917149B2

公开(公告)日：2021-02-09

申请号：US16506995

申请日：2019-07-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Han ,  Lu Wu ,  Huangping Jin

IPC: H04B7/0456 ,  H04B7/06

Abstract: Embodiments of the present application provide a parameter indication method and parameter determining method, a receive device, and a transmit device. The parameter indication method includes: generating indication information for each of a plurality of antenna panels, where the indication information is used to indicate an adjustment parameter of the antenna panel, and the adjustment parameter includes at least one of an amplitude adjustment parameter and a phase adjustment parameter; and sending the indication information. The embodiments of the present application further provide a parameter determining method, a receive device, and a transmit device. In the technical solutions provided in the embodiments of the present application, adjustment parameters of the plurality of antenna panels are fed back to adjust the plurality of antenna panels, so that a precoding vector constructed based on the plurality of antenna panels is more accurate.

公开(公告)号：US20200322081A1

公开(公告)日：2020-10-08

申请号：US16824658

申请日：2020-03-19

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

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

IPC: H04L1/00 ,  H04B7/06

Abstract: The application provides method for communicating channel state information (CSI) in a communication network. The method is as follows: An apparatus determines whether a length of CSI is less than a preset length; and adds a padding bit to the CSI when determining that the length of the CSI is less than the preset length, where a length of CSI obtained by adding the padding bit is consistent with the predetermined length. The CSI obtained by adding the padding bit is communicated in the communication network.

公开(公告)号：US20200260312A1

公开(公告)日：2020-08-13

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：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：US10594369B2

公开(公告)日：2020-03-17

申请号：US16504354

申请日：2019-07-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Han ,  Huangping Jin ,  Xiaoyan Bi

IPC: H04B7/0417 ,  H04B7/06

Abstract: Embodiments of the present invention provide a channel information feedback method, a channel information determining method, a receive end device, and a transmit end device. The channel information feedback method includes: generating at least one piece of description information for each of a plurality of subbands included in a wideband, where each piece of description information is used to describe a description vector of a channel matrix corresponding to the subband, the description information includes at least one of a vector parameter and a weighting parameter; and sending the at least one piece of description information. The embodiments of the present invention further provide a channel information determining method, a receive end device, and a transmit end device. A precoding effect can be improved when precoding is performed based on the description vector fed back in the technical solutions provided in the embodiments of the present invention.

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.