公开(公告)号：US10056950B2

公开(公告)日：2018-08-21

申请号：US15637636

申请日：2017-06-29

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04B7/0417 ,  H04W72/04 ,  H04B7/0456 ,  H04L5/00

CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04L5/0048 ,  H04W72/0413 ,  H04W88/08

Abstract: In a 3D MIMO scenario with 16 antenna ports, antenna ports can be extended in different directions because of different configuration manners of the antenna ports. An apparatus and method where different antenna port counting manners are determined in different configurations are provided, so that in different configurations, a matrix whose dimension is 8 and a matrix whose dimension is 2 are determined in a precoding codebook, and a value of a PMI is fed back to indicate a precoding matrix.

公开(公告)号：US09980261B2

公开(公告)日：2018-05-22

申请号：US14972864

申请日：2015-12-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Chi Gao ,  Jianghua Liu

IPC: H04W72/04 ,  H04W48/16 ,  H04W74/00 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04W48/16 ,  H04W74/006

Abstract: Embodiments of the present invention provide methods for detecting and sending downlink control information and devices. The method for detecting downlink control information includes: acquiring a pilot port determining parameter that corresponds to downlink control information needing to be detected; determining, according to the pilot port determining parameter, a first-type pilot port that corresponds to the downlink control information; and detecting the downlink control information according to the first-type pilot port. In the embodiments of the present invention, user equipment can correctly detect downlink control information.

公开(公告)号：US09941947B2

公开(公告)日：2018-04-10

申请号：US14951397

申请日：2015-11-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianghua Liu ,  Anahid Robert Safavi ,  Branislav Popovic

IPC: H04B7/04 ,  H04L5/00 ,  H04L25/03 ,  H04B7/06 ,  H04J13/00

CPC classification number: H04B7/0486 ,  H04B7/0621 ,  H04J13/00 ,  H04L5/0001 ,  H04L25/03942

Abstract: The invention concerns a method for precoding in an open loop transmission communications system. The method includes precoding data at each of M REs with a precoding matrix, precoding each of DM-RSs with one column of a precoding matrix which is same as that used for precoding M data REs. The method is distinguished by using at least L≥2 different precoding matrices from a set of precoding matrices W to precode the M REs and the E allocated REs such that REs precoded with a first precoding matrix are interleaved with REs precoded with at least one additional, different precoding matrix and the number of used precoding matrices L is adapted to the transmission rank r and number N of available DM-RS.

公开(公告)号：US09876550B2

公开(公告)日：2018-01-23

申请号：US14621350

申请日：2015-02-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mattias Frenne ,  Jianghua Liu

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/10 ,  H04B7/04 ,  H04W72/04

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/066 ,  H04B7/10 ,  H04W72/0453

Abstract: A mobile station is connected to a multi-carrier cellular communication system having a plurality of sub-carriers. The sub-carriers are classified into K frequency sub-bands, channel state information (CSI) of the frequency sub-bands is represented by matrices Wi (i=0 . . . K−1), where K is an integer grater than 1. The mobile station determines a first sub-index k1 for the K matrices Wi (i=0 . . . K−1), and a second sub-index k2 for each one of the K matrices Wi (i=0 . . . K−1). The first sub-index k1 is common for all frequency sub-bands, and the second sub-index k2 is specific for the indexed matrix that corresponds to one frequency sub-band. The mobile station reports to a base station of the multi-carrier cellular communication system the first sub-index k1 and at least one second sub-index k2.

公开(公告)号：US20170373734A1

公开(公告)日：2017-12-28

申请号：US15700909

申请日：2017-09-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu

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

CPC classification number: H04B7/0456 ,  H04B7/04 ,  H04B7/0673

Abstract: A method and an apparatus for measuring and feeding back channel information are disclosed. In an embodiment the method includes receiving, by a first network device, a reference signal and measuring the reference signal to obtain a measurement result. The method further includes selecting a first codebook from a first codebook set according to the measurement result, wherein the first codebook set comprises at least two first codebooks, a sub-vector Wx of each first codebook is formed by a zero vector and a non-zero vector, wherein the vectors forming the Wx correspond to different groups of antenna ports, and sending a codebook index to a second network device, wherein the codebook index corresponds to the first codebook selected from the first codebook set.

公开(公告)号：US20170310372A1

公开(公告)日：2017-10-26

申请号：US15637636

申请日：2017-06-29

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04B7/0417 ,  H04B7/0456 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04L5/0048 ,  H04W72/0413 ,  H04W88/08

Abstract: In a 3D MIMO scenario with 16 antenna ports, antenna ports can be extended in different directions because of different configuration manners of the antenna ports. An apparatus and method where different antenna port counting manners are determined in different configurations are provided, so that in different configurations, a matrix whose dimension is 8 and a matrix whose dimension is 2 are determined in a precoding codebook, and a value of a PMI is fed back to indicate a precoding matrix.

公开(公告)号：US20170289975A1

公开(公告)日：2017-10-05

申请号：US15623188

申请日：2017-06-14

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/0053 ,  H04W72/04

Abstract: A method and an apparatus for allocating control channel candidates is provided, which 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：US09699773B2

公开(公告)日：2017-07-04

申请号：US14668506

申请日：2015-03-25

Applicant: Huawei Technologies Co., Ltd.

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

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

CPC classification number: H04W72/042 ,  H04L5/0053 ,  H04W72/04

Abstract: The present invention 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：US09674827B2

公开(公告)日：2017-06-06

申请号：US14610879

申请日：2015-01-30

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/0053 ,  H04L5/0064 ,  H04W72/0406

Abstract: Embodiments of the present invention relate to the communications field and provide a control channel transmission method and apparatus. The method includes: grouping REs except a DMRS in each physical resource block pair of L determined physical resource block pairs used to transmit a control channel into N eREGs, and calculating the number of valid REs except other overheads in each eREG of the N eREGs; and then mapping each of the eCCEs onto M eREGs according to the number of valid REs included in each eREG of the N eREGs of each physical resource block pair, and sending the eCCE by using the resource elements included in the eREG.

公开(公告)号：US09660781B2

公开(公告)日：2017-05-23

申请号：US14148269

申请日：2014-01-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianghua Liu ,  Kunpeng Liu

IPC: H04L5/00 ,  H04L1/00

CPC classification number: H04L5/0053 ,  H04L1/0073

Abstract: Embodiments of the present invention disclose methods and related devices for sending and receiving uplink control signaling. On a terminal side, the terminal performs data processing and resource mapping separately for the uplink control signaling and uplink data that are scheduled by a base station, so as to obtain a frequency domain signal, where the performing resource mapping separately refers to mapping the data-processed uplink control signaling and uplink data to different resource block groups in a system bandwidth separately; and the terminal performs frequency-to-time conversion for the obtained frequency domain signal to obtain a time domain signal, and then sends the signal to the base station.