公开(公告)号：US09729222B2

公开(公告)日：2017-08-08

申请号：US15229576

申请日：2016-08-05

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：US09577724B2

公开(公告)日：2017-02-21

申请号：US15090446

申请日：2016-04-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming Zhang ,  Qiang Wu ,  Jianghua Liu

IPC: H04B7/04 ,  H04B7/06 ,  H04L25/03 ,  H04B1/04

CPC classification number: H04B7/0417 ,  H04B1/0475 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0639 ,  H04L25/03006

Abstract: The present invention provides a precoding matrix indicator feedback method, a receive end, and a transmit end. The method includes: selecting, by a receive end based on a reference signal, a precoding matrix W from a codebook, where a coefficient α is used to perform phase adjustment on φn in W, φn represents a phase difference between weighted values of a first antenna group and a second antenna group of a transmit end for a transmission signal from a same transmission layer, φ n ∈ { ⅇ j2π ⁢ ⁢ n Q } , and the first antenna group and the second antenna group belong to a same multi-antenna system; and sending, by the receive end, a precoding matrix indicator (PMI) to the transmit end. In this way, using the coefficient α to perform the phase adjustment on φn can increase a size of a codebook set applicable to different antenna configurations, and improve precision of the receive end to feed back a PMI.

Abstract translation: 本发明提供预编码矩阵指示符反馈方法，接收端和发送端。 该方法包括：基于参考信号的接收端选择来自码本的预编码矩阵W，其中使用系数±来对W中的n进行相位调整，Õn表示加权的 对于来自同一传输层的传输信号的发射端的第一天线组和第二天线组的值，n是非负整数，Q是 正整数，第一天线组和第二天线组属于相同的多天线系统; 并且由接收端将发送端的预编码矩阵指示符PMI发送到发送端，使得发送端根据PMI确定W。 以这种方式，使用系数±来执行相位调整可以增加适用于不同天线配置的码本集的大小，并且提高接收端的反馈PMI的精度。

公开(公告)号：US20160381697A1

公开(公告)日：2016-12-29

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

CPC classification number: H04W72/1231 ,  H04B7/0626 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/0029

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.

Abstract translation: 本发明的实施例提供了一种用于反馈信道质量指示符的方法，以及用于发送资源调度信息的方法和装置。 用于反馈信道质量指示符的装置包括：确定模块，被配置为根据系统带宽，CQI反馈模式和由网络设备指定的天线端口数量信息来确定CQI的反馈粒度; 以及反馈模块，被配置为根据CQI的反馈粒度将CQI反馈到网络设备。 用于反馈信道质量指示符的方法，以及用于发送本发明的实施例中提供的资源调度信息的方法和装置用于减少系统开销。

公开(公告)号：US09438328B2

公开(公告)日：2016-09-06

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[vejφv] T，v = [1ejθ]; 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：US09350435B2

公开(公告)日：2016-05-24

申请号：US14924395

申请日：2015-10-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming Zhang ,  Qiang Wu ,  Jianghua Liu

IPC: H04L1/06 ,  H04B7/04 ,  H04B7/06 ,  H04L25/03

CPC classification number: H04B7/0417 ,  H04B1/0475 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0639 ,  H04L25/03006

Abstract: The present invention provides a precoding matrix indicator feedback method, a receive end, and a transmit end. The method includes: selecting, by a receive end based on a reference signal, a precoding matrix W from a codebook, where a coefficient α is used to perform phase adjustment on φn in W, φn represents a phase difference between weighted values of a first antenna group and a second antenna group of a transmit end for a transmission signal from a same transmission layer, φ n ∈ { ⅇ j ⁢ ⁢ 2 ⁢ π ⁢ ⁢ n Q } , and the first antenna group and the second antenna group belong to a same multi-antenna system; and sending, by the receive end, a precoding matrix indicator (PMI) to the transmit end. In this way, using the coefficient α to perform the phase adjustment on φn can increase a size of a codebook set applicable to different antenna configurations, and improve precision of the receive end to feed back a PMI.

Abstract translation: 本发明提供预编码矩阵指示符反馈方法，接收端和发送端。 该方法包括：基于参考信号的接收端选择来自码本的预编码矩阵W，其中使用系数α对W进行相位调整，n表示加权的相位差 来自同一传输层的发送信号的发送端的第一天线组和第二天线组的值， n∈{ⅇj⁢2＆pgr; 笨n Q}，第一天线组和第二天线组属于相同的多天线系统; 并且由接收端将发送端的预编码矩阵指示符（PMI）发送给发送端。 以这种方式，使用系数α来执行相位调整可以增加适用于不同天线配置的码本集的大小，并且提高接收端的反馈PMI的精度。

公开(公告)号：US11916705B2

公开(公告)日：2024-02-27

申请号：US17408009

申请日：2021-08-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yu Sun ,  Yi Qin ,  Zhongfeng Li ,  Leiming Zhang ,  Shengyue Dou

IPC: H04L25/03 ,  H04L5/00 ,  H04L1/00 ,  H04L25/02 ,  H04L27/26 ,  H04W72/1273

CPC classification number: H04L25/03821 ,  H04L1/0003 ,  H04L5/0051 ,  H04L5/0092 ,  H04L25/0226 ,  H04L27/261 ,  H04W72/1273

Abstract: Embodiments of the present invention disclose a reference signal transmission method, including: sending, by a terminal, a first reference signal and a second reference signal; and correspondingly, receiving, by a network device, the first reference signal and the second reference signal, where the first reference signal is mapped to a plurality of symbols and is used for estimation of channel state information, the second reference signal is mapped to at least two of the plurality of symbols and is used for phase tracking, and a subcarrier to which the second reference signal is mapped on one of the at least two symbols has a same frequency-domain location as a subcarrier to which the second reference signal is mapped on the rest of the at least two symbols. With the foregoing solution, accuracy of channel state information estimation can be improved.

公开(公告)号：US11889513B2

公开(公告)日：2024-01-30

申请号：US17200359

申请日：2021-03-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xianda Liu ,  Kunpeng Liu ,  Xu Zhang ,  Leiming Zhang ,  Xiang Gao ,  Yongxing Zhou

IPC: H04W72/23 ,  H04L5/00 ,  H04W72/1273 ,  H04L1/00 ,  H04W72/0453

CPC classification number: H04W72/23 ,  H04L1/0072 ,  H04L5/0053 ,  H04W72/1273 ,  H04L1/0013 ,  H04W72/0453

Abstract: This application provides an example communication method and an example apparatus. The method includes a first network device generates first indication information to indicate a first downlink resource. Second indication information indicates a second downlink resource. Because the first indication information may indicate whether the second indication information exists, if a terminal device detects the first indication information in the first time unit, and the first indication information indicates that the second indication information does not exist in the first time unit, the terminal device may stop a blind detection process on the second indication information in advance.

公开(公告)号：US11509376B2

公开(公告)日：2022-11-22

申请号：US17007261

申请日：2020-08-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongxing Zhou ,  Jianguo Wang ,  Leiming Zhang ,  Jianghua Liu

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/0408 ,  H04L27/26 ,  H04W72/00

Abstract: A base station, user equipment, and communication signal transmitting and receiving methods. A communication signal transmitting apparatus includes a transmitter; a processor, and non-transitory computer-readable storage medium storing a program for execution by the processor, the program including instructions to determine at least two different resource element groups to use to transmit a synchronization signal, each different resource element group of the at least two different resource element groups used to separately transmit the synchronization signal, and transmit the synchronization signal to user equipment on each of the resource element groups, where, for each resource element group, the synchronization signal transmitted on the respective resource element group carries at least one piece of same information, the same information is cell specific information, and the synchronization signals transmitted on the at least two resource element groups using different beams.

公开(公告)号：US11483111B2

公开(公告)日：2022-10-25

申请号：US16368607

申请日：2019-03-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiheng Guo ,  Leiming Zhang ,  Xinqian Xie ,  Xingqing Cheng

IPC: H04L5/00 ,  H04W72/12 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

Abstract: A data transmission method includes determining, by a base station, a first phase noise compensation reference signal (PCRS) port set and a second PCRS port set in a first scheduling period, where the first PCRS port set includes at least one port used to transmit a PCRS, but the second PCRS port set does not include a port used to transmit a PCRS in the first scheduling period; determining, by the base station, a first time-frequency resource element corresponding to the at least one port used to transmit a PCRS in the first PCRS port set; if a quantity of first time-frequency resource elements is greater than or equal to 1, sending, by the base station, a PCRS to user equipment on the first time-frequency resource element; and sending, by the base station, data to the user equipment on a second time-frequency resource element corresponding to the second PCRS port set.

公开(公告)号：US11234138B2

公开(公告)日：2022-01-25

申请号：US16455999

申请日：2019-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leiming Zhang ,  Yifan Liu ,  Ming Lei

IPC: H04W16/28 ,  H04B7/06 ,  H04W72/04 ,  H04W80/08

Abstract: A data transmission method, a transmitting device, and a receiving device are disclosed. The method is applicable to a wireless communications system including a plurality of beams, and includes: determining, by a transmitting device, beam indication information and at least one transmit beam used for sending data to a receiving device; sending, by the transmitting device, the beam indication information to the receiving device; and transmitting, by the transmitting device, the data by using the at least one transmit beam. The transmitting device sends the beam indication information to indicate, to the receiving device, a corresponding receive beam used for receiving the data transmitted by the transmitting device.