公开(公告)号：US11012948B2

公开(公告)日：2021-05-18

申请号：US16523752

申请日：2019-07-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming Zhang ,  Ming Lei ,  Yifan Liu

IPC: H04W52/32 ,  H04W52/14 ,  H04W52/24 ,  H04W52/36 ,  H04L5/00 ,  H04L25/02

Abstract: An uplink measurement reference signal power control method, a network device, and a terminal device are provided. The method includes: generating, by the network device, power control information of an uplink measurement reference signal, where the power control information includes at least one of a transmit power target value, a transmit power adjustment value, or path loss information; and sending, by the network device, the power control information to the terminal device. According to the method provided in the embodiments of this application, the network device generates the power control information, and the power control information includes at least one of the foregoing three types of information and is indicated to the terminal device.

公开(公告)号：US10951276B2

公开(公告)日：2021-03-16

申请号：US16567882

申请日：2019-09-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Jianghua Liu ,  Leiming Zhang

IPC: H04B7/0417 ,  H04B7/06 ,  H04B7/0452 ,  H04L1/20 ,  H04B7/0456 ,  H04L5/00 ,  H04W24/08

Abstract: Embodiments of the present invention provide a channel measurement and feedback method, a network device, and a system, and relate to the field of communications technologies. The method includes: receiving, by a first network device, pilot port configuration information sent by a second network device, where the pilot port configuration information is used to describe at least two pilot ports; measuring, by using the at least two pilot ports, a pilot signal sent by the second network device, and determining first information, where the first information includes at least one of second information of the first network device or third information of a third network device when it is assumed that the first network device and the third network device communicate with the second network device by performing spatial multiplexing on a same time frequency resource.

公开(公告)号：US10609639B2

公开(公告)日：2020-03-31

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 ,  H04W74/08 ,  H04W16/28 ,  H04W72/00 ,  H04W48/10 ,  H04W48/12 ,  H04L5/00 ,  H04L12/18

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：US10560162B2

公开(公告)日：2020-02-11

申请号：US16125276

申请日：2018-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Qiang Wu ,  Leiming Zhang

IPC: H04B7/06 ,  H04B7/0456 ,  H04B7/0417 ,  H04L5/00

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：US20190334682A1

公开(公告)日：2019-10-31

申请号：US16504036

申请日：2019-07-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming Zhang ,  Yifan Liu ,  Ming Lei

IPC: H04L5/00 ,  H04W72/04

Abstract: A method for configuring a resource of a downlink measurement reference signal and an apparatus are disclosed. In the method, the base station may notify a terminal device of a resource pool by using configuration information of the resource pool that is determined based on the basic pattern or available resources, so that resource configuration of a downlink measurement reference signal is implemented.

公开(公告)号：US10461916B2

公开(公告)日：2019-10-29

申请号：US15675060

申请日：2017-08-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Leiming Zhang

IPC: H04L5/16 ,  H04W72/04 ,  H04L5/00

Abstract: The embodiments discloses a data transmission method and device. The method includes: separately configuring, by an eNodeB in different time units on a specific frequency band according to a TDD mode or an FDD mode, an uplink frequency resource used for transmitting uplink data and a downlink frequency resource used for transmitting downlink data; and sending, by the eNodeB, downlink data to user equipment UE by using the configured downlink frequency resource, and receiving, by using the configured uplink frequency resource, uplink data sent by the UE, so that an uplink frequency resource and a downlink frequency resource are configured in different time units on a same frequency band according to both a TDD mode and an FDD mode.

公开(公告)号：US20190319761A1

公开(公告)日：2019-10-17

申请号：US16456416

申请日：2019-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming Zhang ,  Yifan Liu ,  Ming Lei

IPC: H04L5/00 ,  H04W72/12

Abstract: An uplink transmission process and method in a wireless communications system, the including determining, by a base station, forming information that is from an uplink measurement reference signal port to an antenna port, and sending, to user equipment, the forming information that is from the uplink measurement reference signal port to the antenna port. The user equipment may obtain the forming information that is from the uplink measurement reference signal port to the antenna port. The forming information may be used for performing forming processing on a transmission signal during uplink transmission.

公开(公告)号：US10367556B2

公开(公告)日：2019-07-30

申请号：US16015831

申请日：2018-06-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu

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

Abstract: A method for measuring and feeding back channel information and a corresponding apparatus are provided. In an embodiment the method includes determining, by a first network device, a first codebook from a first codebook set, wherein the first codebook set comprises at least two first codebooks, wherein a sub-vector Wx of each first codebook is formed by a zero vector and a non-zero vector, wherein vectors forming the Wx are associated with different groups of antenna ports, wherein each first codebook comprises at least one first sub-vector   [ V a 0 0 V a 1 0 ] and/or at least one second sub-vector   [ 0 V b 0 0 V b 1 ] , and wherein Va0 and Va1 are elements in the vector Va, and Vb0 and Vb1 are elements in the vector Vb and sending a codebook index to a second network device, wherein the codebook index is associated with the first codebook selected from the first codebook set.

公开(公告)号：US20190173550A1

公开(公告)日：2019-06-06

申请号：US16268284

申请日：2019-02-05

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Jianguo Wang ,  Yongxing Zhou ,  Leiming Zhang

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  G06F17/16 ,  H04B7/0413 ,  H04B7/0634 ,  H04B7/0639 ,  H04N19/124

Abstract: Embodiments of the present invention provide a method for feeding back channel state information, a user equipment, and a base station, to improve feedback precision of channel state information. The method includes: receiving a reference signal sent by a base station; selecting a precoding matrix W from a codebook according to the reference signal, where a column vector of the precoding matrix W may be expressed as α[v ejϕv]T, v=[1 ejθ]; and sending a precoding matrix indicator PMI to the base station, where the PMI is corresponding to the selected precoding matrix W. The present invention may further improve quantization precision and achieve balance between overheads and the quantization precision. The base station performs precoding on a sent signal according to a fed back precoding matrix indicator, which can improve precoding precision, thereby improving a data transmission rate and system throughput.

公开(公告)号：US10305558B2

公开(公告)日：2019-05-28

申请号：US15274240

申请日：2016-09-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leiming Zhang ,  Qiang Wu ,  Jianghua Liu

IPC: H04B7/0456 ,  H04B7/06 ,  H04W88/02

Abstract: Embodiments of the present invention disclose a precoding matrix indicator feedback method, receiving method, and apparatus. User equipment UE receives a reference signal sent by a base station; the UE selects, based on the reference signal, a precoding matrix for each first subband of N first subbands in a system transmission bandwidth from a codebook, where the codebook includes at least two precoding matrixes, and each precoding matrix is denoted by at least a first precoding matrix indicator PMI and a second PMI, where each first subband of the N first subbands corresponds to a second PMI, and each second subband of M second subbands corresponds to a first PMI; and the UE feeds back the first PMI corresponding to each second subband to the base station, and feeds back the second PMI corresponding to each first subband to the base station.