公开(公告)号：US11246050B2

公开(公告)日：2022-02-08

申请号：US16452892

申请日：2019-06-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leiming Zhang ,  Jianghua Liu ,  Yifan Liu

IPC: H04W24/10 ,  H04B17/336 ,  H04B7/0456 ,  H04L5/00 ,  H04B7/06 ,  H04W72/04 ,  H04W88/02

Abstract: The present disclosure discloses a method for transmitting an uplink measurement reference signal. The method is applied to a network-side device and includes the following operations: first, receiving, by the network-side device, an uplink measurement reference signal sent by user equipment, where the uplink measurement reference signal carries downlink interference information of a downlink channel of the network-side device; and then, performing downlink interference estimation on the uplink measurement reference signal, to obtain the downlink interference information. Compared with the prior art in which a base station cannot obtain downlink interference information of a downlink channel used by user equipment, in the present disclosure, the network-side device can effectively schedule the user equipment based on the downlink interference information, thereby improving scheduling efficiency, and improving data transmission efficiency of the downlink channel.

公开(公告)号：US10972245B2

公开(公告)日：2021-04-06

申请号：US16453562

申请日：2019-06-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leiming Zhang ,  Yifan Liu ,  Ming Lei

IPC: H04W72/04 ,  H04L5/00

Abstract: A method for measurement pilot signal is provided. The method includes: determining, by a first device from a plurality of subbands included in system bandwidth, a first subband that is used to transmit a measurement pilot signal, where one subband includes at least one physical resource block; sending, by the first device, identifier information of the first subband to a second device; and transmitting the measurement pilot signal in at least one physical resource block corresponding to the first subband to the second device.

公开(公告)号：US10897300B2

公开(公告)日：2021-01-19

申请号：US16566202

申请日：2019-09-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leiming Zhang ,  Yifan Liu ,  Ming Lei

IPC: H04B7/06 ,  H04B7/024

Abstract: Embodiments of the present invention disclose an interference coordination method and apparatus. The method includes: receiving direction restriction information, where the direction restriction information includes angle restriction information, and the angle restriction information is used to indicate a restricted transmission direction; determining a signal preprocessing manner, where a transmission direction formed based on the signal preprocessing manner does not include the restricted transmission direction; and feeding back the signal preprocessing manner. According to the embodiments of the present invention, signaling overheads can be reduced, and an interference coordination application scenario can be expanded.

公开(公告)号：US10205497B2

公开(公告)日：2019-02-12

申请号：US15382206

申请日：2016-12-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu

IPC: H04B7/04 ,  H04B7/06 ,  H04L1/06 ,  H04B7/0417 ,  H04B7/0456

Abstract: Embodiments of the present invention disclose a signal transmission method, a system, and a device. When measuring a reference signal and determining channel quality, UE obtains a difference between codeword to CSI-RS mapping relationships by using a channel quality measurement model, may calculate an optimized mapping relationship by means of measurement, and determines at least one mapping relationship from these mapping relationships, to adjust a codeword to CSI-RS mapping relationship of a channel, thereby improving system flexibility and increasing channel resource utilization.

公开(公告)号：US20190020389A1

公开(公告)日：2019-01-17

申请号：US16125276

申请日：2018-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Qiang Wu ,  Leiming Zhang

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

CPC classification number: H04B7/0486 ,  H04B7/0417 ,  H04B7/06 ,  H04B7/0626 ,  H04L5/0026

Abstract: A transmit diversity method, a device, and a system are described herein. The method includes: measuring, by a second network device, channel state information based on a pilot signal, and sending rank index information and precoding matrix index information to a first network device based on the channel state information; receiving, by the first network device, the rank index information and the precoding matrix index information that are sent by the second network device; determining a diversity coding scheme based on the rank index information; determining a precoding matrix based on the precoding matrix index information; and performing transmission processing on to-be-transmitted data based on the diversity coding scheme and the precoding matrix.

公开(公告)号：US10020856B2

公开(公告)日：2018-07-10

申请号：US15700909

申请日：2017-09-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu

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

CPC classification number: H04B7/0456 ,  H04B7/04 ,  H04B7/0673 ,  H05K999/99

Abstract: A method and an apparatus for measuring and feeding back channel information are disclosed. In an embodiment the method includes receiving, by a first network device, a reference signal and measuring the reference signal to obtain a measurement result. The method further includes selecting a first codebook from a first codebook set according to the measurement result, wherein the first codebook set comprises at least two first codebooks, a sub-vector Wx of each first codebook is formed by a zero vector and a non-zero vector, wherein the vectors forming the Wx correspond to different groups of antenna ports, and sending a codebook index to a second network device, wherein the codebook index corresponds to the first codebook selected from the first codebook set.

公开(公告)号：US09954589B2

公开(公告)日：2018-04-24

申请号：US15416561

申请日：2017-01-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianghua Liu ,  Leiming Zhang ,  Yongxing Zhou

IPC: H04B7/02 ,  H04B7/06 ,  H04L5/00 ,  H04J11/00

CPC classification number: H04B7/06 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639 ,  H04J11/00 ,  H04L5/0048

Abstract: The present invention discloses a method for feeding back channel state information, a method for receiving channel state information, and a device. The method includes: selecting, by a terminal, a precoding matrix from a preset codebook subset for each subband in N subbands according to a configured reference signal, where each precoding matrix in the codebook subset is identified by a first PMI, a second PMI, and a third PMI that is used to indicate a phase relationship, first PMIs corresponding to the precoding matrices selected by the terminal for all subbands in the N subbands are the same, the precoding matrix selected for each subband in the N subbands corresponds to one second PMI, and third PMIs corresponding to the precoding matrices for all subbands in the N subbands are the same; and reporting, by the terminal, the first PMI, the second PMI, and the third PMI.

公开(公告)号：US20180063779A1

公开(公告)日：2018-03-01

申请号：US15804182

申请日：2017-11-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Yongxing Zhou ,  Leiming Zhang

IPC: H04W48/20 ,  H04W72/00

CPC classification number: H04W48/20 ,  H04L5/0026 ,  H04L12/1881 ,  H04W16/28 ,  H04W48/10 ,  H04W48/12 ,  H04W72/005 ,  H04W74/08 ,  H04W74/0833

Abstract: Embodiments of the present invention provide a signal transmission method and a network device. The signal transmission method includes: sending, by a first network device, a first signal before performing cell selection; and sending, by the first network device, a second signal after performing cell selection, where resources used by the first network device to send the first signal and the second signal are different, and the second signal is a random access signal.

公开(公告)号：US20180041949A1

公开(公告)日：2018-02-08

申请号：US15716763

申请日：2017-09-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Yongxing Zhou ,  Leiming Zhang

IPC: H04W48/16 ,  H04W74/08

Abstract: A wireless access method and apparatus, the method including sending N first signal sets on N first resources, where N is an integer greater than 1, receiving Z response signals from a terminal for the N first signal sets, where each response signal of the response signals comprises indication information of a resource on which the respective first signal set of the N first signal sets is located, Z is an integer greater than or equal to 1, and Z is less than or equal to N, and sending M second signal sets on M second resources according to the Z response signals, where M is an integer greater than or equal to 1, and each second signal set of the M second signal sets corresponds to at least one of the N first signal sets.

公开(公告)号：US09843366B1

公开(公告)日：2017-12-12

申请号：US15371840

申请日：2016-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Wu ,  Leiming Zhang ,  Jianghua Liu

IPC: H04B7/02 ,  H04L1/02 ,  H04B7/0456 ,  H04L1/06 ,  H04B7/0417 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0639 ,  H04L1/06

Abstract: Embodiments disclose a method for transmitting a 4-antenna precoding matrix, a user equipment, and a base station. The method includes determining a rank used for indicating the number of transmission layers, determining a first precoding matrix in a codebook set corresponding to the rank, determining a first PMI and a second PMI used for indicating the first precoding matrix, and sending the first PMI and the second PMI used for indicating the first precoding matrix to a base station.