公开(公告)号：US10554467B2

公开(公告)日：2020-02-04

申请号：US16055353

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 ,  H04L5/00 ,  H04J11/00

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：US10517091B2

公开(公告)日：2019-12-24

申请号：US15659279

申请日：2017-07-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Li ,  Qiang Wu ,  Bingyu Qu ,  Yongxing Zhou

IPC: H04W72/04 ,  H04W4/08 ,  H04L5/00 ,  H04L5/14 ,  H04L25/03

Abstract: The method includes determining a type of a first subframe, where the type of the first subframe is a first-type subframe, a second-type subframe, a third-type subframe, or a fourth-type subframe, where the second-type subframe includes an uplink control channel and a downlink channel, the uplink control channel is located after the downlink channel, and there is a guard period between the uplink control channel and the downlink channel. The fourth-type subframe includes an uplink channel and a downlink control channel, the uplink channel is located after the downlink control channel, and there is a guard period between the uplink channel and the downlink control channel. The method also includes transmitting data in the first subframe according to the type of the first subframe.

公开(公告)号：US10432371B2

公开(公告)日：2019-10-01

申请号：US15403272

申请日：2017-01-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianguo Wang ,  Yongxing Zhou

IPC: H04L5/00 ,  H04W72/04 ,  H04W88/02 ,  H04B7/0417 ,  H04B7/0452

Abstract: Embodiments of the present invention disclose a data transmission method, user equipment, and a base station. The method include: receiving a first reference signal set; obtaining, based on the first reference signal set and a first codeword-to-layer mapping, CSI that includes a rank indicator RI and a channel quality indicator CQI, and sending the CSI; receiving a second reference signal set; and receiving, based on the second reference signal set and a second codeword-to-layer mapping, data, where a quantity of layers to which at least one codeword is mapped in the first codeword-to-layer mapping is less than a quantity of layers to which a codeword is mapped in the second codeword-to-layer mapping. According to the embodiments of the present invention, precision of an MCS used during data transmission may be improved, and a throughput of a communications system may be enhanced.

公开(公告)号：US20190254028A1

公开(公告)日：2019-08-15

申请号：US16393181

申请日：2019-04-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Li ,  Qiang Wu ,  Bingyu Qu ,  Yongxing Zhou

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04W4/08

Abstract: A method includes determining a type of a first subframe, where the type of the first subframe is a first-type subframe, a second-type subframe, a third-type subframe, or a fourth-type subframe, where the second-type subframe includes an uplink control channel and a downlink channel, the uplink control channel is located after the downlink channel, and there is a guard period between the uplink control channel and the downlink channel. The fourth-type subframe includes an uplink channel and a downlink control channel, the uplink channel is located after the downlink control channel, and there is a guard period between the uplink channel and the downlink control channel. The method also includes transmitting data in the first subframe according to the type of the first subframe.

公开(公告)号：US10326506B2

公开(公告)日：2019-06-18

申请号：US15823046

申请日：2017-11-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Yongxing Zhou

IPC: H04B7/0456 ,  H04L1/06 ,  H04W72/04

Abstract: The present disclosure discloses a method, a user equipment and a base station for determining a PMI. The method includes: receiving a reference signal set sent by a base station; based on the reference signal set, selecting a precoding matrix from a codebook, the codebook at least including a non-constant modulus precoding matrix, the non-constant modulus precoding matrix at least including a non-constant modulus column vector, amplitude values of at least two elements of the non-constant modulus column vector forming a symmetrical sequence; and sending a PMI to the base station, the PMI corresponding to the selected precoding matrix. According to the method, the user equipment and the base station for determining PMI, because the non-constant modulus precoding matrix included in the adopted codebook can adjust the shape of a beam, antennas may focus power on a hotspot region, and thus a load balance may be effectively realized.

公开(公告)号：US10263674B2

公开(公告)日：2019-04-16

申请号：US16107653

申请日：2018-08-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04B7/04 ,  H04B7/0456 ,  H04L5/00 ,  H04B7/06

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：US10063296B2

公开(公告)日：2018-08-28

申请号：US15808318

申请日：2017-11-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Yongxing Zhou ,  Jianghua Liu

IPC: H04B7/08 ,  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 abase 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：US10039093B2

公开(公告)日：2018-07-31

申请号：US15722816

申请日：2017-10-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Guan ,  Lixia Xue ,  Yongxing Zhou

IPC: G01R31/08 ,  H04B7/00 ,  H04L12/28 ,  H04J3/00 ,  H04W72/04 ,  H04W72/12 ,  H04W72/00 ,  H04L5/00 ,  H04W76/04 ,  H04W74/08 ,  H04W76/27

CPC classification number: H04W72/042 ,  H04L5/0053 ,  H04W72/005 ,  H04W72/0446 ,  H04W72/1278 ,  H04W74/0833 ,  H04W76/27

Abstract: Embodiments of the present invention provide a control information sending method, receiving method, and device. The control information sending method includes: determining a first subframe of a first radio frame on a first carrier, where the first subframe includes a control region; sending control information in the control region of the first subframe of the first radio frame to a user equipment, where the control information includes a PDCCH; and sending an ePDCCH in a second subframe of the first radio frame to the user equipment. According to the embodiments of the present invention, when control information borne on an ePDCCH cannot be sent in a first radio frame, a PDCCH can still be sent to a user equipment through a control region in a first subframe, thereby achieving purposes of performing uplink/downlink scheduling for the user equipment and downlink feedback for uplink data of the user equipment.

公开(公告)号：US20180191423A1

公开(公告)日：2018-07-05

申请号：US15909732

申请日：2018-03-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bingyu Qu ,  Jianqin Liu ,  Kunpeng Liu ,  Yongxing Zhou

IPC: H04B7/12 ,  H04B7/06 ,  H04B7/26 ,  H04L27/26

CPC classification number: H04B7/12 ,  H04B7/0684 ,  H04B7/26 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2614 ,  H04L27/2621 ,  H04L27/2636 ,  H04L27/3411

Abstract: A signal sending method includes: mapping, by a sending device, a first sequence onto M even-numbered subcarriers in 2M subcarriers, and mapping a second sequence onto M odd-numbered subcarriers in the 2M subcarriers, where the first sequence is one of a third sequence and a fourth sequence, the second sequence is the other of the third sequence and the fourth sequence, the 2M subcarriers are subcarriers on a same time domain symbol, and for elements of a second time domain sequence corresponding to the fourth sequence and a first time domain sequence corresponding to the third sequence at a same moment, when a complex factor is taken out, one of the first time domain sequence and the second time domain sequence is an in-phase component, and the other is a quadrature component; and transforming sequences mapped onto the 2M subcarriers to a time domain to generate transmit signals, and then sending the transmit signals.

公开(公告)号：US20180159673A1

公开(公告)日：2018-06-07

申请号：US15885332

申请日：2018-01-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Jianghua Liu ,  Yongxing Zhou

IPC: H04L5/00 ,  H04L1/00 ,  H04B17/309

CPC classification number: H04L5/0048 ,  H04B17/309 ,  H04L1/0026 ,  H04L5/0023

Abstract: A method and an apparatus for measuring communication quality are disclosed. The method includes: acquiring reference signal resource configuration information, where the reference signal resource configuration information at least includes: reference signal port configuration information, and reference signal power information of at least one port group; or the reference signal resource configuration information at least includes: reference signal port configuration information, and a ratio of a power of a data channel in at least one port group to a power of a reference signal; and sending the acquired reference signal resource configuration information to user equipment. Therefore, in a multi-antenna system, accurate signal quality measurement information is acquired, or more accurate channel state information is acquired.