公开(公告)号：US20180343158A1

公开(公告)日：2018-11-29

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 ,  H04L5/00 ,  H04J1/00 ,  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：US10009889B2

公开(公告)日：2018-06-26

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 ,  H04W72/00 ,  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：US10009087B2

公开(公告)日：2018-06-26

申请号：US15014392

申请日：2016-02-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianqin Liu

IPC: H04W4/00 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0413

Abstract: Embodiments of the present invention provide a method for determining a precoding matrix indicator, a receiving device, and a sending device. The method for determining a precoding matrix indicator includes: selecting, by a receive end, a precoding matrix W from a codebook based on a reference signal sent by a transmit end, where the precoding matrix W is a product of two matrices W1 and W2, where the W1 includes NB block matrices Xi, NB≥1, and the W1 is indicated as: W1=diag{X1, . . . , XNB}, where 1≤i≤NB, and a column xi,j of each block matrix Xi is a Kronecker kronecker product of a first vector Aij and a second vector Bij, that is, xij=AijBij; and sending, by the receive end, a precoding matrix indicator PMI corresponding to the precoding matrix W to the transmit end, so that the transmit end obtains the precoding matrix W according to the PMI.

公开(公告)号：US20180091209A1

公开(公告)日：2018-03-29

申请号：US15829206

申请日：2017-12-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianqin Liu ,  Jianghua Liu

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

Abstract: The present application discloses a method for feeding back channel state information (CSI), comprising: acquiring first and second CSI based on a first and a second CSI measurement resource respectively, obtaining a channel quality indicator (CQI) based on the first CSI and the second CSI, wherein the first CSI comprises a first and a second type of precoding matrix indicator (PMI1 and PMI2) and a first rank indicator (Rh), and the second CSI comprises a first and a second type of PMI (PMI3 and PMI4) and a second RI (RI2); and feeding back third CSI to a base station, wherein the third CSI comprises third PMI information, third RI information, and the CQI, wherein the third PMI information is obtained based on at least three of the PMI1, the PMI2, the PMI3, and the PMI4, and the third RI information is obtained based on the RI1 and the RI2.

公开(公告)号：US20180027541A1

公开(公告)日：2018-01-25

申请号：US15705585

申请日：2017-09-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Wu ,  Bingyu Qu ,  Lixia Xue ,  Yongxing Zhou ,  Leiming Zhang ,  Jianqin Liu ,  Kunpeng Liu

IPC: H04W72/04 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08

Abstract: A control information sending method, a base station, and user equipment are provided. The method includes: sending, by a base station, first control information to first user equipment; transceiving, by the base station, first data to/from the first user equipment according to the first control information; and sending, by the base station, first trigger information to the first user equipment, where the first trigger information is used to indicate that the base station transceives second data to/from the first user equipment according to partial information or all information of the first control information.

公开(公告)号：US09860896B2

公开(公告)日：2018-01-02

申请号：US14802585

申请日：2015-07-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Wu ,  Jianqin Liu ,  Jianghua Liu

IPC: H04W72/04 ,  H04L12/26 ,  H04W24/02 ,  H04L5/00 ,  H04W88/08 ,  H04W72/02 ,  H04W72/12

CPC classification number: H04W72/0453 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04L43/50 ,  H04W24/02 ,  H04W72/02 ,  H04W72/12 ,  H04W88/08

Abstract: The present invention discloses an enhanced physical downlink control channel (EPDCCH) candidate determining method and device, and relates to the field of wireless communications, so as to avoid EPDCCH blocking and improve reliability of control information transmission. The method of the present invention includes: determining an EPDCCH resource set p in a subframe k, where the EPDCCH resource set p includes NECCE,p,k=q×r enhanced control channel elements (ECCEs), an EPDCCH candidate of an EPDCCH with an aggregation level being L corresponds to L ECCEs having consecutive reference numerals, and an EPDCCH candidate is capable of carrying an EPDCCH; and determining the number of EPDCCH candidates at the aggregation level L of a carrier corresponding to an index Cellindex and an ECCE corresponding to each EPDCCH candidate, where the ECCE corresponding to each EPDCCH candidate at the aggregation level L is related to the index Cellindex.

公开(公告)号：US20170311298A1

公开(公告)日：2017-10-26

申请号：US15599260

申请日：2017-05-18

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: 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：US20170302410A1

公开(公告)日：2017-10-19

申请号：US15637752

申请日：2017-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianqin Liu ,  Qiang Wu ,  Yongxing Zhou ,  Bingyu Qu

IPC: H04L1/18 ,  H04W76/04 ,  H04W72/04 ,  H04L5/00 ,  H04W88/02

Abstract: A control information transmission method, a base station, and user equipment are disclosed. The transmission method includes: sending, by a base station, first control information on a second carrier, where the first control information is used by the base station to send data on a first carrier according to the first control information; and sending, by the base station, the data on the first carrier according to the first control information; where duration of a transmission time interval of the first carrier is less than duration of a transmission time interval of the second carrier.

公开(公告)号：US09730203B2

公开(公告)日：2017-08-08

申请号：US14599841

申请日：2015-01-19

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/00 ,  H04L5/0053 ,  H04W72/04

Abstract: The present invention provides a method for assigning the number of control channel candidates and the number of blind detection times, a base station, and a user equipment. The method includes determining a first aggregation level set {L1i} and determining the number of EPDCCH candidates corresponding to each aggregation level in the {L1i}. {L1i} is formed by N aggregation levels supported by an EPDCCH. A second aggregation level set {L2j} is determined along with the number of EPDCCH candidates corresponding to each aggregation level in the {L2j}. {L2j} is formed by M aggregation levels supported by an EPDCCH to be detected, {L2j} is a subset of {L1i}, and the number of EPDCCH candidates corresponding to L2j in {L2j} is greater than or equal to the number of EPDCCH candidates corresponding to L2j in {L1i}.

公开(公告)号：US20150201405A1

公开(公告)日：2015-07-16

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: 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.

Abstract translation: 本发明提供一种用于分配与通信场相关的控制信道候选的方法和装置，并且可以将不同聚合级别的控制信道候选分配给K ePDCCH组，并降低由UE执行的盲检测的复杂度。 该方法包括：确定用于发送控制信道的K个集合，其中K个集合中的每个集合包括至少一个物理资源块对; 根据要发送的控制信道支持的聚合级别中的至少一个，与每个聚合级别对应的控制信道候选的数量，K个集合中的至少一个集合级别，将每个聚合级别的控制信道候选分配给K个集合中的至少一个集合 用于发送控制信道和集合的类型。