公开(公告)号：US20170141827A1

公开(公告)日：2017-05-18

申请号：US15416561

申请日：2017-01-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianghua LIU ,  Leiming ZHANG ,  Yongxing ZHOU

IPC: H04B7/06 ,  H04L5/00

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：US20240187292A1

公开(公告)日：2024-06-06

申请号：US18538375

申请日：2023-12-13

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：US20210204260A1

公开(公告)日：2021-07-01

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: H04W72/04 ,  H04W72/12 ,  H04L5/00

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：US20190222386A1

公开(公告)日：2019-07-18

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

CPC classification number: H04L5/0048 ,  H04W72/04 ,  H04W72/12 ,  H04W88/02 ,  H04W88/08

Abstract: A data transmission method, including: determining, by a base station, a first 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：US20180034613A1

公开(公告)日：2018-02-01

申请号：US15729400

申请日：2017-10-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng LIU ,  Leiming ZHANG ,  Qiang WU

IPC: H04L5/00 ,  H04W24/10

Abstract: The present invention relates to the communications field, and provides a channel measurement method, a base station, and UE, to perform channel measurement without affecting downlink data transmission. The method includes: obtaining, by UE, a reference signal resource mapping diagram, and obtaining a reference signal according to the reference signal resource mapping diagram; performing, by the UE, channel measurement according to the reference signal to determine channel state information, and feeding back the channel state information to a base station, where the reference signal resource mapping diagram is a location to which a time-frequency resource of the reference signal is mapped, the reference signal resource mapping diagram is a first reference signal resource mapping diagram or a second reference signal resource mapping diagram.

公开(公告)号：US20170012684A1

公开(公告)日：2017-01-12

申请号：US15274240

申请日：2016-09-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leiming ZHANG ,  Qiang WU ,  Jianghua LIU

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0478 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0639 ,  H04B7/065 ,  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.

Abstract translation: 本发明的实施例公开了一种预编码矩阵指示器反馈方法，接收方法和装置。 用户设备UE接收基站发送的参考信号; 基于参考信号，UE从码本的系统传输带宽中选择N个第一子带的每个第一子带的预编码矩阵，其中码本包括至少两个预编码矩阵，并且每个预编码矩阵由至少一个 第一预编码矩阵指示符PMI和第二PMI，其中N个第一子带的每个第一子带对应于第二PMI，并且M个第二子带的每个第二子带对应于第一PMI; 并且UE将与每个第二子带相对应的第一PMI反馈给基站，并将与每个第一子带对应的第二PMI反馈给基站。

公开(公告)号：US20160050000A1

公开(公告)日：2016-02-18

申请号：US14924395

申请日：2015-10-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming ZHANG ,  Qiang WU ,  Jianghua LIU

IPC: H04B7/04 ,  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 ∈ {  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 来自同一传输层的传输信号的发射端的第一天线组和第二天线组的值; n∈{j2＆pgr; 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：US20150381249A1

公开(公告)日：2015-12-31

申请号：US14844714

申请日：2015-09-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming ZHANG ,  Qiang WU ,  Jianghua LIU ,  Jianguo WANG

IPC: H04B7/04 ,  H04L1/00 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0469 ,  H04B7/0639 ,  H04B7/0691 ,  H04L1/0026

Abstract: The present disclosure provides a method for feeding back a precoding matrix indicator, a receive end and a transmit end, where the method includes: selecting, by a receive end, a precoding matrix W from a codebook based on a reference signal, where W ∈ [ X 1  ( θ 1 )  X 2  ( θ 2 , ϕ n ) ] , the θ1 and the θ2 indicate a phase difference of weighted values for signal transmission between two neighboring antennas in a first antenna group of a transmit end and a phase difference of weighted values for signal transmission between two neighboring antennas in a second antenna group of the transmit end, the φn indicates a phase difference of weighted values for signal transmission between the first antenna group and the second antenna group, where the signal transmission between the first antenna group and the second antenna group is for a same transmission layer, ϕ n =  j   2  π   n M , and sending, by the receive end, a precoding matrix indicator PMI to the transmit end.

Abstract translation: 本公开提供了一种用于反馈预编码矩阵指示符，接收端和发送端的方法，其中该方法包括：基于参考信号从码本中选择预编码矩阵W，其中W∈ [X 1（＆Thetas; 1）X 2（＆Thetas; 2，＆phis; n）]，＆amp; t; 1和＆amp; t; 2表示第一个相邻天线之间的信号传输的加权值的相位差 发送端的天线组和发送端的第二天线组中的两个相邻天线之间的信号传输的加权值的相位差，＆amp; n表示第一天线组和第一天线组之间的信号传输的加权值的相位差 第二天线组，其中第一天线组和第二天线组之间的信号传输用于相同的传输层， n =j2 2＆pgr 并且由接收端向发送端发送预编码矩阵指示符PMI。

公开(公告)号：US20150304010A1

公开(公告)日：2015-10-22

申请号：US14788191

申请日：2015-06-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming ZHANG ,  Yongxing ZHOU ,  Jianghua LIU ,  Qiang WU ,  Jianguo WANG

IPC: H04B7/06 ,  H04B7/04 ,  H04L5/00

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0621 ,  H04B7/0639 ,  H04L1/0026 ,  H04L5/005 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0246 ,  H04L25/03343 ,  H04L25/03898 ,  H04W88/02 ,  H04W88/08

Abstract: A channel state information (CSI) reporting method is provided. A reference signal is received from a base station. A precoding matrix is selected, based on the reference signal, from a codebook, where the codebook includes a precoding matrix W and W=αSV, where a matrix V is an N×ν matrix, N is the number of reference signal ports, ν≦N, S is a row selection matrix used to select one or more row vectors from the matrix V, and α is a constant. CSI is sent to the base station, where the CSI includes a precoding matrix indicator PMI and the PMI is corresponding to the selected precoding matrix. A suitable precoding matrix can be selected according to an interference situation, so as to select an antenna for transmitting data and power of the antenna.

Abstract translation: 提供了一种信道状态信息（CSI）报告方法。 从基站接收参考信号。 基于参考信号从码本中选择预编码矩阵，其中码本包括预编码矩阵W和W =αSV，其中矩阵V是N×＆ngr; 矩阵，N是参考信号端口的数量，＆ngr;＆nlE; N，S是用于从矩阵V中选择一个或多个行向量的行选择矩阵，α是常数。 将CSI发送到基站，其中CSI包括预编码矩阵指示符PMI，并且PMI对应于所选择的预编码矩阵。 可以根据干扰情况选择合适的预编码矩阵，以便选择用于发送天线的数据和功率的天线。

公开(公告)号：US20220174613A1

公开(公告)日：2022-06-02

申请号：US17672477

申请日：2022-02-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye LIU ,  Leiming ZHANG ,  Kunpeng LIU

IPC: 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.