公开(公告)号：US10122427B2

公开(公告)日：2018-11-06

申请号：US15834984

申请日：2017-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Yongxing Zhou

IPC: H04B7/00 ,  H04B7/0456 ,  H04B7/06 ,  H04L25/03

Abstract: The present invention relates to a method for determining a precoding matrix indicator, a user equipment (UE), a base station (e.g., eNB), and a system. The method includes: receiving a reference signal sent by a base station; selecting, based on the reference signal, a precoding matrix from a codebook, where a precoding matrix W included in the codebook is a product of two matrices W1 and W2, where W1 is a block diagonal matrix, where each block matrix is a Kronecker product of a matrix Ai and a matrix Bi; and sending a precoding matrix indicator PMI to the base station, where the PMI corresponds to the selected precoding matrix, so that the base station obtains the precoding matrix according to the PMI.

公开(公告)号：US10116363B2

公开(公告)日：2018-10-30

申请号：US15819179

申请日：2017-11-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianguo Wang ,  Yongxing Zhou

IPC: H04B7/06 ,  H04B7/0456 ,  H04W16/28 ,  H04L5/00 ,  H04J13/00

Abstract: A method and an apparatus determine a precoding matrix indicator, user equipment, and a base station. The method includes: determining a precoding matrix indicator PMI, where the PMI corresponds to a precoding matrix W, and the precoding matrix W satisfies a first condition, a second condition, or a third condition; and sending the PMI to a base station. Embodiments of the present invention further provide a corresponding apparatus, and the corresponding user equipment and base station. Technical solutions provided in the embodiments of the present invention can effectively control a beam, especially a beam shape and a beam orientation, in a horizontal direction and a perpendicular direction.

公开(公告)号：US10084519B2

公开(公告)日：2018-09-25

申请号：US15819179

申请日：2017-11-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianguo Wang ,  Yongxing Zhou

IPC: H04B7/06 ,  H04B7/0456 ,  H04W16/28 ,  H04L5/00 ,  H04J13/00

Abstract: A method and an apparatus determine a precoding matrix indicator, user equipment, and a base station. The method includes: determining a precoding matrix indicator PMI, where the PMI corresponds to a precoding matrix W, and the precoding matrix W satisfies a first condition, a second condition, or a third condition; and sending the PMI to a base station. Embodiments of the present invention further provide a corresponding apparatus, and the corresponding user equipment and base station. Technical solutions provided in the embodiments of the present invention can effectively control a beam, especially a beam shape and a beam orientation, in a horizontal direction and a perpendicular direction.

公开(公告)号：US20180234143A1

公开(公告)日：2018-08-16

申请号：US15950820

申请日：2018-04-11

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Jianguo Wang ,  Yongxing Zhou ,  Yong Wu ,  Liang Xia

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

CPC classification number: H04B7/0456 ,  H04B7/0639 ,  H04L5/0048

Abstract: A method for determining a precoding matrix indicator, user equipment, and a base station are disclosed in embodiments of the present invention. The method includes: receiving a first reference signal set sent by a base station, where the first reference signal set is associated with a user equipment-specific matrix or matrix set; selecting a precoding matrix based on the first reference signal set, where the precoding matrix is a function of the user equipment-specific matrix or matrix set; and sending a precoding matrix indicator to the base station, where the precoding matrix indicator corresponds to the selected precoding matrix. In the embodiments of the present invention, CSI feedback precision can be improved without excessively increasing feedback overhead, thereby improving system performance.

公开(公告)号：US20180041323A1

公开(公告)日：2018-02-08

申请号：US15785881

申请日：2017-10-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Yongxing Zhou

IPC: H04L5/00 ,  H04B7/04 ,  H04W72/04

CPC classification number: H04L5/0053 ,  H04B7/04 ,  H04B7/0413 ,  H04L5/0023 ,  H04L5/0048 ,  H04W72/0446

Abstract: Embodiments disclose a reference signal transmission method and an apparatus. The method includes receiving reference signal resource configuration information sent by a base station, where the reference signal resource configuration information includes antenna port quantity information and a resource configuration index. The method also includes determining a reference signal configuration from a reference signal configuration set according to the antenna port quantity information and the resource configuration index. The method also includes obtaining, according to the determined reference signal configuration, positions of the resource elements REs that are used to send the reference signal on the antenna ports in the antenna port set, and receiving reference signals according to the positions of the REs.

公开(公告)号：US09794818B2

公开(公告)日：2017-10-17

申请号：US14593423

申请日：2015-01-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongxing Zhou ,  Jianguo Wang

IPC: H04W24/10 ,  H04L1/00 ,  H04L27/26 ,  H04W24/08

CPC classification number: H04W24/10 ,  H04L1/00 ,  H04L1/0026 ,  H04L1/0031 ,  H04L27/2627 ,  H04W24/08

Abstract: This application relates to a method for acquiring a CQI, a user equipment, an eNB and a system. The method includes: calculating CQIs of at least two subbands, where there is an overlapped resource block between the subbands; and transmitting the subband CQIs to an eNB. In the method for acquiring a channel quality indicator, the user equipment, the evolved node B and the system of the present application, there is an overlapped resource block between adjacent subbands, and meanwhile the channel quality of the resource block of the subband is obtained by using different subbands, thus the feedback accuracy of the channel quality of the resource block of each subband, especially the channel quality of the resource block in the subband overlapping area, thereby improving the granularity of frequency-selective scheduling, and improving the frequency-selective scheduling and the link adaptation, and therefore, the system throughput is increased.

公开(公告)号：US09681319B2

公开(公告)日：2017-06-13

申请号：US14560847

申请日：2014-12-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Yongxing Zhou

IPC: H04W24/08 ,  H04B17/318 ,  H04L5/00 ,  H04B17/10 ,  H04B17/382

CPC classification number: H04W24/08 ,  H04B17/102 ,  H04B17/318 ,  H04B17/382 ,  H04L5/0048 ,  H04L5/0053

Abstract: Embodiments of the present invention disclose a method, a user equipment, a base station and a system for measuring signal received power, wherein the method includes: obtaining, by a user equipment (UE), reference signal resource; obtaining, by the user equipment (UE), a reference signal subset and a precoding matrix, wherein the reference signal subset is a subset of a reference signal port set configured in the reference signal resource, and the precoding matrix is used for precoding the reference signal subset; and obtaining, by the user equipment (UE), signal received power according to the reference signal subset and the precoding matrix. The signal received power may be obtained under an circumstance that a tilt angle of a base station antenna (e.g., AAS) is controlled flexibly, thereby being beneficial to achieve independent uplink power control and selection of a cell or a node under a scenario of the above-mentioned antenna configuration.

公开(公告)号：US20170163321A1

公开(公告)日：2017-06-08

申请号：US15439686

申请日：2017-02-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Yongxing Zhou ,  Jianghua Liu

IPC: H04B7/0456 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0473 ,  H04B7/0626 ,  H04B7/0639

Abstract: Embodiments of the present invention provide a method includes: receiving a reference signal sent by a base station; selecting, based on the reference signal, a precoding matrix from a codebook, where a precoding matrix W included in the codebook is a product of three matrices being w1, Z, and w2, that is, w=w1zw2, where both w1 and Z are block diagonal matrices, w1=a formula (I), Z=a formula (II), each of w1 and Z includes at least one block matrix, that is, NB≧1, and each column of each block matrix zi in the matrix Z has the following structure formula (III); and sending a precoding matrix indicator (PMI) to the base station, where the PMI corresponds to the selected precoding matrix, and is used by the base station to obtain the selected precoding matrix W according to the PMI.

公开(公告)号：US20160344465A1

公开(公告)日：2016-11-24

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.

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：US09467262B2

公开(公告)日：2016-10-11

申请号：US14149499

申请日：2014-01-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianguo Wang ,  Xingqing Cheng ,  Yongxing Zhou

IPC: H04L12/26 ,  H04L5/00 ,  H04W24/10 ,  H04W16/26 ,  H04W84/04

CPC classification number: H04L5/0048 ,  H04W16/26 ,  H04W24/10 ,  H04W84/047

Abstract: The present invention provides a method for configuring a reference signal, a UE, and an eNB. The method includes: determining, by a UE, a reference signal configuration priority set, and sending information of the reference signal configuration priority set to an eNB; and receiving, by the UE, a reference signal configuration measurement set sent by the eNB, where the reference signal configuration measurement set is configured by the eNB according to the information of the reference signal configuration priority set, and the reference signal configuration measurement set is used for the UE to measure and feed back channel state information. In embodiments of the present invention, a reference signal configuration matched with an optimal actual channel of a UE can be selected when an RRH or a base station is geographically separated, so that the UE can acquire a good channel condition.

Abstract translation: 本发明提供了一种用于配置参考信号，UE和eNB的方法。 该方法包括：由UE确定参考信号配置优先级集合，并将设置的参考信号配置优先级信息发送给eNB; 并由UE接收由eNB发送的参考信号配置测量集，其中参考信号配置测量集由eNB根据参考信号配置优先级设置的信息配置，并且参考信号配置测量集合是 用于UE测量和反馈信道状态信息。 在本发明的实施例中，当RRH或基站在地理上分离时，可以选择与UE的最佳实际信道匹配的参考信号配置，使得UE可以获得良好的信道条件。