公开(公告)号：US10270499B2

公开(公告)日：2019-04-23

申请号：US15727889

申请日：2017-10-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming Zhang ,  Kunpeng Liu ,  Yongxing Zhou

IPC: H04B7/0413 ,  H04B7/04 ,  H04L1/06 ,  H04B7/06 ,  H04W4/02

Abstract: The present invention provides a data transmission method and device. The method includes: performing, by the first communications equipment, multi-stream data transmission with the second communications equipment according to a first antenna port, where the first antenna port is an antenna port, of the first communications equipment, satisfying a condition for multi-stream data transmission between the first communications equipment and the second communications equipment. The method provided in embodiments of the present invention improves applicability of a multi-stream data transmission system for line of sight propagation.

公开(公告)号：US10194455B2

公开(公告)日：2019-01-29

申请号：US15263165

申请日：2016-09-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Wu ,  Weijun Sun ,  Leiming Zhang ,  Jianghua Liu

IPC: H04W72/12 ,  H04B7/06 ,  H04L1/00

Abstract: Embodiments of the present invention provide a method for feeding back a channel quality indicator, and a method and an apparatus for sending resource scheduling information. An apparatus for feeding back a channel quality indicator includes: a determining module, configured to determine a feedback granularity of a CQI according to a system bandwidth, a CQI feedback mode, and antenna port quantity information specified by a network device; and a feedback module, configured to feed back the CQI to the network device according to the feedback granularity of the CQI. The method for feeding back a channel quality indicator, and the method and the apparatus for sending resource scheduling information provided in the embodiments of the present invention are used to reduce system overheads.

公开(公告)号：US20180309485A1

公开(公告)日：2018-10-25

申请号：US16015831

申请日：2018-06-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu

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

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

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：US20150304008A1

公开(公告)日：2015-10-22

申请号：US14753490

申请日：2015-06-29

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.

Abstract translation: 本发明的实施例提供了一种用于反馈信道状态信息，用户设备和基站的方法，以提高信道状态信息的反馈精度。 该方法包括：接收由基站发送的参考信号; 根据参考信号从码本中选择预编码矩阵W，其中预编码矩阵W的列向量可以表示为α[v ej＆phgr; v] T，v = [1 ej＆thetas;]; 并向基站发送预编码矩阵指示符PMI，其中PMI对应于所选择的预编码矩阵W.本发明可以进一步提高量化精度并实现开销和量化精度之间的平衡。 基站根据反馈预编码矩阵指示符对发送的信号进行预编码，这可以提高预编码精度，从而提高数据传输速率和系统吞吐量。

公开(公告)号：US12127134B2

公开(公告)日：2024-10-22

申请号：US17672477

申请日：2022-02-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye Liu ,  Leiming Zhang ,  Kunpeng Liu

IPC: H04W52/18 ,  H04W52/24

CPC classification number: H04W52/24

Abstract: Example signal sending methods and apparatus are described. One example method includes obtaining a first insertion loss corresponding to a first resource and a second insertion loss corresponding to a second resource, where the first insertion loss is different from the second insertion loss. A first transmit power corresponding to the first resource is determined based on the first insertion loss. A second transmit power corresponding to the second resource is determined based on the second insertion loss. A first signal is sent on the first resource based on the first transmit power. A second signal is sent on the second resource based on the second transmit power.

公开(公告)号：US12075275B2

公开(公告)日：2024-08-27

申请号：US17670139

申请日：2022-02-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xianda Liu ,  Kunpeng Liu ,  Leiming Zhang

IPC: H04W24/10 ,  H04B7/0456

CPC classification number: H04W24/10 ,  H04B7/0456

Abstract: This application relates to a communications method and apparatus, and a device. The communications method includes: A terminal device determines a first codeword set, where the first codeword set includes a first codeword, the first codeword is a 4×1 matrix, and each element in the matrix is a non-zero element.

公开(公告)号：US11894963B2

公开(公告)日：2024-02-06

申请号：US17318644

申请日：2021-05-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kunpeng Liu ,  Mingxin Gong ,  Leiming Zhang

IPC: H04L27/26 ,  H04J13/10 ,  H04L5/00

CPC classification number: H04L27/2613 ,  H04J13/10 ,  H04L5/0048 ,  H04L27/2614

Abstract: This application discloses a sequence generating method and apparatus, and relates to the field of communications technologies, to resolve a problem that a PAPR of a DMRS symbol is higher than that of a data symbol. An initialization factor of a first sequence is obtained, where the initialization factor is associated with a first parameter; and the first sequence is generated based on the initialization factor. In addition, the first parameter is a port number, or the first parameter is a code division multiplexing CDM group identity.

公开(公告)号：US20230209571A1

公开(公告)日：2023-06-29

申请号：US18177001

申请日：2023-03-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaoqing Liu ,  Yongping Zhang ,  Zheng Yu ,  Tie Li ,  Leiming Zhang

IPC: H04W72/232 ,  H04L5/00

CPC classification number: H04W72/232 ,  H04L5/0048

Abstract: Embodiments of this application provide a reference signal (RS) sending method and a communication apparatus, which may be applied to a scenario in which an RS is sent based on aperiodic time-domain behavior. The method may include: A terminal device obtains downlink control information (DCI); determines first time information based on the DCI; determines, based on the first time information and a time unit in which the DCI is located, a time unit for sending an RS; and sends the RS in the determined time unit for sending the RS. Correspondingly, a network device determines the first time information based on the DCI; determines, based on the first time information and the time unit in which the DCI is located, a time unit for receiving the RS; and receives the RS in the determined time unit for receiving the RS.

公开(公告)号：US11405858B2

公开(公告)日：2022-08-02

申请号：US16997431

申请日：2020-08-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Yongxing Zhou ,  Leiming Zhang

IPC: H04W48/16 ,  H04W74/08 ,  H04W56/00

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：US11190312B2

公开(公告)日：2021-11-30

申请号：US16665875

申请日：2019-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yong Liu ,  Xiaoyan Bi ,  Leiming Zhang

IPC: H04L5/00 ,  H04W76/27 ,  H04L25/02 ,  H04W72/04

Abstract: Embodiments of this application disclose a parameter configuration method and apparatus, relate to the field of communications technologies, and specifically provide a method and an apparatus for setting a resource unit bundling size, to help improve accuracy of a channel estimation result. The method may include: generating parameter configuration signaling, and sending the parameter configuration signaling. The parameter configuration signaling is used to indicate the resource unit bundling size. The resource unit bundling size may be applied to at least two inconsecutive time-frequency resources in frequency domain, and each time-frequency resource includes at least one consecutive resource unit in frequency domain; or may be applied to at least two inconsecutive time-frequency resources in time domain, and each time-frequency resource includes at least one consecutive resource unit in time domain.