公开(公告)号：US10454537B2

公开(公告)日：2019-10-22

申请号：US15630303

申请日：2017-06-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kunpeng Liu ,  Jianghua Liu ,  Leiming Zhang

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

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：US10447522B2

公开(公告)日：2019-10-15

申请号：US16055334

申请日：2018-08-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianqin Liu ,  Jianghua Liu ,  Qiang Wu ,  Yongxing Zhou

IPC: H04L27/26 ,  H04J1/00 ,  H04J11/00 ,  H04L5/00

Abstract: The present invention provides a signal sending apparatus, a signal detection apparatus, a signal sending and detection system, a signal sending method, and a signal detection method. The apparatus determines a time unit that is in each time window and that is used to transmit a synchronization signal, and transmits the synchronization signal in the determined time unit in each time window. Therefore, a synchronization signal is always located in a time unit that has a fixed location in each time window, so that a device at a receive end needs to perform detection only in a fixed time unit in each time window, thereby reducing complexity of designing and detecting the synchronization signal.

公开(公告)号：US10447356B2

公开(公告)日：2019-10-15

申请号：US16058636

申请日：2018-08-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Yongxing Zhou ,  Jianghua Liu

IPC: H04L1/02 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0417

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：US20190230636A1

公开(公告)日：2019-07-25

申请号：US16371681

申请日：2019-04-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianqin Liu ,  Kunpeng Liu ,  Qiang Wu ,  Jianghua Liu

IPC: H04W72/04 ,  H04L5/00

Abstract: In a system and method of control channel transmission in the communications field, REs, except those used for transmitting a DMRS, are grouped in each physical resource block pair of L physical resource block pairs. The L physical resource block pairs are determined to be used to transmit a control channel into N eREGs. The number of valid REs are calculated except other overheads in each eREG of the N eREGs. Each of the eCCEs are mapped onto M eREGs according to the number of valid REs included in each eREG of the N eREGs of each physical resource block pair. The eCCE is sent in the REs included in the eREG.

公开(公告)号：US10326504B2

公开(公告)日：2019-06-18

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

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：US20190173539A1

公开(公告)日：2019-06-06

申请号：US16272428

申请日：2019-02-11

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu

IPC: H04B7/0456 ,  H04L1/06 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/04 ,  H04L1/00

Abstract: Embodiments of the present invention disclose a signal transmission method, a system, and a device. When measuring a reference signal and determining channel quality, UE obtains a difference between codeword to CSI-RS mapping relationships by using a channel quality measurement model, may calculate an optimized mapping relationship by means of measurement, and determines at least one mapping relationship from these mapping relationships, to adjust a codeword to CSI-RS mapping relationship of a channel, thereby improving system flexibility and increasing channel resource utilization.

公开(公告)号：US10305571B2

公开(公告)日：2019-05-28

申请号：US15686692

申请日：2017-08-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianqin Liu ,  Yongxing Zhou ,  Jianghua Liu ,  Qiang Wu

IPC: H04B7/06 ,  H04L5/00 ,  H04L27/26 ,  H04W16/28 ,  H04W36/00

Abstract: A data transmission method, apparatus, and system, and user equipment are provided. The data transmission method may include determining configuration information of a first time unit in a radio time window, where the first time unit includes multiple sub-time units, a switching time period and a transmission time period are reserved in a first sub-time unit at an interval of at least N sub-time units in the first time unit, the switching time period is used to perform analog beam switching for a common channel and/or a common reference signal, and N is a natural number. The method also includes transmitting the common channel and/or the common reference signal in the first sub-time unit in the first time unit according to the configuration information of the first time unit, where the common channel and/or the common reference signal are/is transmitted in the transmission time period.

公开(公告)号：US10256951B2

公开(公告)日：2019-04-09

申请号：US14611743

申请日：2015-02-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Jianghua Liu

IPC: H04L5/00 ,  H04L27/26

Abstract: Disclosed a method and an apparatus for configuring and transmitting a pilot, the method includes: a UE determines, according to a partitioned resource set, a parameter for generating an initial value of a demodulation pilot sequence; generates an initial value of the demodulation pilot sequence on the first resource set according to the first parameter, and generates an initial value on the second resource set according to the second parameter; and obtains the demodulation pilot sequence according to the initial value. In embodiments of the present invention, since parameters for calculating the initial value of the demodulation pilot sequence are respectively configured according to a pre-partitioned resource set, the initial value can be calculated according to the resource set to which the E-PDCCH belongs and the set parameter, thus obtaining the demodulation pilot sequence for demodulating the E-PDCCH, so as to improve demodulation performance of the E-PDCCH.

公开(公告)号：US10237864B2

公开(公告)日：2019-03-19

申请号：US15988220

申请日：2018-05-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianqin Liu ,  Jianghua Liu ,  Qiang Wu ,  Chi Gao

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

Abstract: The present application provides a method and an apparatus for allocating control channel candidates, which relate to the communications field, and can allocate control channel candidates at different aggregation levels to K ePDCCH sets and reduce complexity of blind detection performed by a UE. The method includes: determining K sets for transmitting a control channel, where each set in the K sets includes at least one physical resource block pair; and allocating control channel candidates at each aggregation level to at least one set in the K sets according to at least one of aggregation levels supported by the control channel to be transmitted, the number of control channel candidates corresponding to each aggregation level, the K sets for transmitting the control channel, and types of the sets.

公开(公告)号：US10148406B2

公开(公告)日：2018-12-04

申请号：US15410774

申请日：2017-01-20

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Junwei Wang ,  Xiaoan Fan ,  Jianghua Liu

IPC: H04L5/14 ,  H04L12/931 ,  H04L5/00 ,  H04L5/22 ,  H04W72/00 ,  H04W72/04 ,  H04W4/06 ,  H04W72/02 ,  H04J11/00

Abstract: A method and device for transmitting a multimedia broadcast multicast service are disclosed. A base station sends to a user equipment device position information of specific radio frames in a time unit, and position information of a specific subframe in each of the specific radio frames in the time unit. The time unit includes 2M radio frames, and the specific radio frames are two or more of the 2M radio frames comprised in the time unit, where M is a nonnegative integer. The base station sends the multimedia broadcast multicast service carried in the specific subframe.