公开(公告)号：US11445396B2

公开(公告)日：2022-09-13

申请号：US16674858

申请日：2019-11-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Han ,  Huangping Jin ,  Ye Wu ,  Xiaoyan Bi

IPC: H04W24/10 ,  H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04W72/04

Abstract: Embodiments of the present invention provide a channel measurement method and an apparatus. The method includes: for a to-be-measured frequency band that includes at least one reporting subband and 0 or more non-reporting subbands, obtaining channel state information of each reporting subband, where the channel state information of each reporting subband is obtained based on channel estimation, and the at least one reporting subband is included in reporting subbands that are contiguous in frequency domain, or the at least one reporting subband is included in reporting subbands that are not contiguous in frequency domain; 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 one or more of the at least one reporting subband.

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：US20220166570A1

公开(公告)日：2022-05-26

申请号：US17669801

申请日：2022-02-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenquan Hu ,  Min Zhang ,  Bengt Lindoff ,  Thorsten Schier ,  Han Zhou ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04J13/00

Abstract: A client device for associating phase tracking reference signal (PTRS) antenna ports to demodulation reference signal (DMRS) antenna ports, the client device being configured obtain configuration information related to a set of PTRS antenna ports, obtain control information indicating at least one of one or more codewords, a set of DMRS antenna ports assigned to the one or more codewords, or transmission configuration indication (TCI) information indicating one or more TCI states, and determine an association between the set of PTRS antenna ports and the set of DMRS antenna ports based on the configuration information related to the set of PTRS antenna ports and the control information.

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：US20210337529A1

公开(公告)日：2021-10-28

申请号：US17372075

申请日：2021-07-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liuliu Ji ,  Shibin Ge ,  Haicun Hang ,  Xiaohan Wang ,  Xiaoyan Bi

IPC: H04W72/04

Abstract: This application provides an information transmission method and apparatus. The method includes: receiving, by a terminal device, a plurality of downlink data channels, where the plurality of downlink data channels are scheduled through a plurality of downlink control channels; determining, by the terminal device based on the plurality of downlink data channels, one or more pieces of feedback information corresponding to at least two downlink data channels; and sending, by the terminal device, the one or more pieces of feedback information through a same uplink control channel.

公开(公告)号：US11159288B2

公开(公告)日：2021-10-26

申请号：US16265791

申请日：2019-02-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yong Liu ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04L1/00 ,  H04W72/04 ,  H04W72/08 ,  H04W72/12

Abstract: A reference signal transmission method, a related device, and a communications system are provided. The method includes: determining a time-frequency resource occupied by at least one reference signal in at least one resource unit, where each of the at least one resource unit includes a first part and a second part, the first part and the second part occupy different symbols, any symbol occupied by the first part is in front of any symbol occupied by the second part; and sending the reference signal by using the determined time-frequency resource. According to the embodiments of the present invention, a receive end device can be more time-effective during data demodulation.

公开(公告)号：US11101909B2

公开(公告)日：2021-08-24

申请号：US16698466

申请日：2019-11-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dageng Chen ,  Shibin Ge ,  Xiaoyan Bi

IPC: H04J11/00

Abstract: This application discloses a scrambling code sequence generation method and apparatus, and belongs to the field of communication technologies. The method includes: determining a scrambling code sequence based on a configuration parameter of a transmission reception point TRP, where different TRPs correspond to different configuration parameters; and scrambling or descrambling data by using the scrambling code sequence. This application is used for data transmission, resolves a problem in a related technology that system performance is relatively poor because user equipment cannot better obtain, from received data, data sent by a TRP, and improves system performance.

公开(公告)号：US11101855B2

公开(公告)日：2021-08-24

申请号：US16664444

申请日：2019-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye Wu ,  Xiaoyan Bi

IPC: H04B7/04 ,  H04B7/0456 ,  H04L5/00

Abstract: This application provides a data sending method, a data receiving method, a network device, and a terminal device, to obtain a diversity gain to a greater extent, improve received signal quality, and improve data transmission reliability. The method includes: performing, by a network device, transmit diversity preprocessing on one modulated symbol stream to obtain at least one transmit diversity spatial stream; performing, by the network device, precoder cycling on the at least one transmit diversity spatial stream to obtain at least one precoded data stream, where each of the at least one transmit diversity spatial stream corresponds to at least two different precoding vectors; and sending, by the network device, the at least one precoded data stream to a first terminal device.

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：US20210075578A1

公开(公告)日：2021-03-11

申请号：US17099219

申请日：2020-11-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye Wu ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04W24/08

Abstract: This application provides a communication method, a terminal device, and a network device, to improve accuracy of CSI measurement. The method includes: receiving, by a terminal device, first indication information from a network device, where the first indication information is used to determine a first transmission scheme assumed for the terminal device to perform interference measurement; and sending, by the terminal device, channel state information (CSI), where the CSI is obtained by performing CSI measurement based on at least the first transmission scheme and a second transmission scheme, and the second transmission scheme is a transmission scheme assumed for the terminal device to perform channel measurement.