公开(公告)号：US11277176B2

公开(公告)日：2022-03-15

申请号：US17039475

申请日：2020-09-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi Zhang ,  Xiang Gao

IPC: H04B7/0456 ,  H04L27/26

Abstract: This application provides an example communication method and apparatus. The communication method is performed in a communications system, where N antenna ports are configured for the terminal device, N is an integer greater than or equal to 2, the N antenna ports correspond to T antenna port combination modes, each antenna port combination mode corresponds to M antenna ports in the N antenna ports, and each antenna port combination mode set includes at least one antenna port combination mode. The communication method includes receiving, by the network device, first indication information from the terminal device, where the first indication information is used to indicate a first antenna port combination mode set. The method also includes determining, by the network device, K antenna ports in the N antenna ports based on the first antenna port combination mode set and sending, by the network device, second indication information to the terminal device.

公开(公告)号：US11139936B2

公开(公告)日：2021-10-05

申请号：US16673111

申请日：2019-11-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xianda Liu ,  Kunpeng Liu ,  Ruiqi Zhang ,  Xueru Li

IPC: H04W4/00 ,  H04L5/00 ,  H04B7/0456 ,  H04W72/04 ,  H04W72/12

Abstract: This application provides a data transmission method, terminal device, and network device. The method includes: sending, by a terminal device, at least one precoded reference signal on at least one reference signal resource corresponding to a first PRG, where different precoding matrixes are used for different reference signals, and the first PRG is a PRG used to transmit a reference signal; receiving, by the terminal device, resource indication information, where the resource indication information indicates a reference signal resource that is corresponding to a second PRG and that is in the at least one reference signal resource, and the second PRG is a PRG used to transmit a physical uplink shared channel (PUSCH); and sending, by the terminal device, a precoded PUSCH on the second PRG based on the resource indication information, where a precoding matrix used for the PUSCH is a precoding matrix used for a reference signal sent on the reference signal resource corresponding to the second PRG. In this way, a precoding matrix used to transmit the PUSCH on the second PRG can be effectively selected.

公开(公告)号：US11101941B2

公开(公告)日：2021-08-24

申请号：US16369067

申请日：2019-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi Zhang ,  Jianqin Liu

IPC: H04L1/18 ,  H04W76/27 ,  H04L1/00 ,  H04W72/12 ,  H04L27/00 ,  H04L27/26 ,  H04L5/00

Abstract: The present disclosure relates to reference symbol indication methods, devices, and systems. One example method includes receiving, by a user equipment, a target parameter including a target reference symbol indication sent by a base station, determining a target transmission mode and target reference symbol information based on the target parameter and a preset reference symbol mapping relationship, generating a target reference symbol based on the target reference symbol information, and demodulating data based on the target reference symbol and the target transmission mode, where the preset reference symbol mapping relationship includes a mapping relationship among a reference symbol indication, reference symbol information, and a transmission mode.

公开(公告)号：US10965355B2

公开(公告)日：2021-03-30

申请号：US16935549

申请日：2020-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xueru Li ,  Ruiqi Zhang

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

Abstract: This application discloses a precoding matrix index (PMI) reporting method, and related communications apparatus and medium. The method includes: determining an rank indicator (RI) and a PMI, where the PMI is used to determine R precoding matrices W1, . . . , WR. An rth precoding matrix Wr in the R precoding matrices satisfies Wr×W1×W2, r, where an lth row of W2, r is obtained by performing DFT transform on an lth row of a matrix V2,rand R is indicated by the RI. The PMI includes first indication information and second indication information. The first indication information includes location index information. The location index information is used to indicate Km,r element locations tr,m,1, . . . , tr,m,Kmj∈{1, . . . , T} on an mth row of V2,r. The second indication information is used to indicate Km,r complex coefficients ar,m,tr,mj at the element locations tr,m,1, . . . , tr,m,kmj on the mth row of V2,r. V2,r is determined based on the Km,r element locations and the Km,r complex coefficients.

公开(公告)号：US10855358B2

公开(公告)日：2020-12-01

申请号：US15931749

申请日：2020-05-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi Zhang ,  Kunpeng Liu ,  Xueru Li

IPC: H04B7/06 ,  H04L1/06 ,  H04B7/0456

Abstract: This application provides a channel state information feedback method and an apparatus. The method includes: generating first frequency domain indication information and M1 pieces of first precoding indication information, where the first frequency domain indication information is used to indicate L1 frequency domain subbands in T frequency domain subbands, the T frequency domain subbands are a system bandwidth or a part of the system bandwidth, 1≤L1

公开(公告)号：US20200178285A1

公开(公告)日：2020-06-04

申请号：US16786968

申请日：2020-02-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hao Sun ,  Bingyu Qu ,  Ruiqi Zhang

IPC: H04W72/12 ,  H04L1/18 ,  H04L5/00

Abstract: In various embodiments, uplink scheduling information can be received by a terminal from a network device in a time cell n. The uplink scheduling information can be used to obtain a maximum quantity of first downlink data packets sent by the network device to the terminal device from a time cell n−k3 to a time cell n+k2. Acknowledgement information of the first downlink data packet can be sent by the terminal to the network device on a physical uplink shared channel in a time cell n+k1 based on the maximum quantity of the first downlink data packets. In this way, when the acknowledgement information is sent on the PUSCH, a data reception error caused by a case in which the base station does not know, when decoding the data, a quantity of pieces of acknowledgement information actually sent by the terminal is avoided.

公开(公告)号：US10511367B2

公开(公告)日：2019-12-17

申请号：US16279329

申请日：2019-02-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi Zhang ,  Xueru Li ,  Di Zhang

IPC: H04B7/02 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0413

Abstract: A channel state information sending method, a channel state information receiving method, and a device are disclosed, to reduce resource overheads required when a terminal device feeds back CSI to a network device in a scenario of a high precision codebook-based precoding matrix. The method includes: determining, by a terminal device, a precoding matrix W; sending, by the terminal device, a signal including CSI to a network device; obtaining, by the network device, an RI and indication information based on the signal including the CSI; obtaining, by the network device, a PMI2 based on the RI and the indication information; and determining, by the network device, the precoding matrix W based on the rank indicator RI and the second precoding matrix indicator PMI2.

公开(公告)号：US20190007108A1

公开(公告)日：2019-01-03

申请号：US16126331

申请日：2018-09-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ruiqi Zhang ,  Bingyu Qu

IPC: H04B7/0417 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/06

Abstract: Embodiments of the present invention disclose a channel quality index measurement method and apparatus. The method includes: determining, by a base station, a target CSI-RS on each of time-frequency resources corresponding to resource numbers of a terminal, where the target CSI-RS is a precoded CSI-RS, and the time-frequency resource is a resource element used to transmit the CSI-RS or the target CSI-RS; sending, by the base station, the target CSI-RS on each of the time-frequency resources corresponding to the resource numbers to the terminal on the time-frequency resource; sending, by the base station to the terminal, indication information used to indicate the resource numbers of the terminal; and receiving, by the base station, a CQI that is sent by the terminal and that is used to indicate channel quality.

公开(公告)号：US12075422B2

公开(公告)日：2024-08-27

申请号：US17992644

申请日：2022-11-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xueru Li ,  Ruiqi Zhang

IPC: H04W72/21 ,  H04L1/1829 ,  H04L5/00 ,  H04W72/044

CPC classification number: H04W72/21 ,  H04L1/1861 ,  H04L5/0055 ,  H04W72/044

Abstract: One example method includes determining, by a terminal device, that at least two physical uplink control channel (PUCCH) resources collide in a time unit n, where n is an integer, and the at least two PUCCH resources include a first resource configured for first uplink control information (UCI) and a second resource configured for second UCI. The terminal device can determine the first resource and a third resource in the time unit n, where the third resource is one of M PUCCH resources, the first resource and the third resource do not include a same orthogonal frequency division multiplexing (OFDM) symbol in time domain, M is a positive integer greater than or equal to 1, the first resource is used to carry a part or all of the first UCI, and the third resource is used to carry a part or all of the second UCI.

公开(公告)号：US11923940B2

公开(公告)日：2024-03-05

申请号：US17144626

申请日：2021-01-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xueru Li ,  Ruiqi Zhang

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0663

Abstract: A channel state information reporting method and apparatus are described. The method can include a terminal device obtaining first indication information and sending the first indication information to a network device. The network device receives the first indication information, where the first indication information indicates a differential value between channel state information of a first antenna port set and channel state information of a second antenna port set. The first antenna port set includes x antenna ports of the terminal device, the second antenna port set includes m antenna ports of the terminal device, and the first antenna port set is different from the second antenna port set. The channel state information reporting method and apparatus in embodiments of this application help improve accuracy of channel state information obtained by a network device, and improve data transmission performance.