公开(公告)号：US20190036581A1

公开(公告)日：2019-01-31

申请号：US16146599

申请日：2018-09-28

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Ruiqi Zhang ,  Xueru Li ,  Di Zhang

IPC: H04B7/0456 ,  H04B7/0413 ,  H04B7/06

Abstract: A channel state information sending method, a channel state information receiving method, and a device are disclosed, to reduce resource overheads required when a terminal device feeds back CSI to a network device in a scenario of a high precision codebook-based precoding matrix. The method includes: determining, by a terminal device, a precoding matrix W; sending, by the terminal device, a signal including CSI to a network device; obtaining, by the network device, an RI and indication information based on the signal including the CSI; obtaining, by the network device, a PMI2 based on the RI and the indication information; and determining, by the network device, the precoding matrix W based on the rank indicator RI and the second precoding matrix indicator PMI2.

公开(公告)号：US11962381B2

公开(公告)日：2024-04-16

申请号：US17371978

申请日：2021-07-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Gao ,  Kunpeng Liu ,  Ruiqi Zhang

IPC: H04B7/06 ,  H04W72/02 ,  H04W72/044 ,  H04W72/0453

CPC classification number: H04B7/0634 ,  H04B7/0639 ,  H04W72/02 ,  H04W72/0453 ,  H04W72/046

Abstract: Embodiments of the present invention disclose a communication method and a device. Configuration information indicating one or more spatial domain beam basis vector groups and Q thresholds is received from a network device, where the Q thresholds correspond one-to-one to spatial domain beam basis vectors in the one or more spatial domain beam basis vector groups. L spatial domain beam basis vectors are selected from a spatial domain beam basis vector group set. K frequency domain basis vectors are selected from a frequency domain basis vector set for each of the L spatial domain beam basis vectors.

公开(公告)号：US11736170B2

公开(公告)日：2023-08-22

申请号：US17745349

申请日：2022-05-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xueru Li ,  Ruiqi Zhang

IPC: H04B7/06 ,  H04L5/00 ,  H04W24/10 ,  H04B7/0456

CPC classification number: H04B7/0626 ,  H04B7/0486 ,  H04B7/0632 ,  H04B7/0639 ,  H04L5/0051 ,  H04L5/0057 ,  H04W24/10

Abstract: This application provides a data transmission method, a terminal device, and a network device. The method includes: determining, by a terminal device, reference information; and sending, by the terminal device, second channel state information (CSI) based on a comparison result of the reference information and a status parameter, where the second CSI includes all parameters in first CSI or includes some parameters in the first CSI, the first CSI is CSI that needs to be reported and that is configured by a network device for the terminal device, and the status parameter includes at least one of a transmission parameter of uplink data, a parameter in the first CSI, and a transmission parameter of the first CSI. The data transmission method, the terminal device, and the network device in embodiments of this application help improve transmission performance of CSI.

公开(公告)号：US11652670B2

公开(公告)日：2023-05-16

申请号：US17081713

申请日：2020-10-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Gao ,  Ruiqi Zhang

IPC: H04L25/02 ,  H04B1/713 ,  H04L1/16 ,  H04L5/00 ,  H04L1/1607

CPC classification number: H04L25/0226 ,  H04B1/713 ,  H04L1/1642 ,  H04L5/005

Abstract: A method for transmitting a sounding reference signal and a terminal device are provided. The method includes: receiving, by the terminal device, SRS configuration information from a network device; determining, based on one or more of an SRS bandwidth configuration parameter, a sequence number nSRS of a quantity of SRS transmissions, a quantity Λ of antenna ports, and the received SRS configuration information, an index α(nSRS) corresponding to an antenna port used to transmit an SRS; selecting the antenna port with the index of α(nSRS) from indexes corresponding to the Λ antenna ports; and transmitting the SRS through the antenna port with the index of α(nSRS) during an nSRSth SRS transmission. nSRS is an integer greater than or equal to 0, Λ is a positive integer greater than or equal to 4, and a symbol * indicates a multiplication operation.

公开(公告)号：US20220369148A1

公开(公告)日：2022-11-17

申请号：US17872549

申请日：2022-07-25

Applicant: Huawei Technologies Co, Ltd.

Inventor： Jialing Liu ,  Weimin Xiao ,  Qian Cheng ,  Ruiqi Zhang

IPC: H04W24/10 ,  H04L1/00 ,  H04L5/00

Abstract: An embodiment method, by a user equipment (UE), includes performing a channel measurement (CM) on a first subset of a set of non-zero-power (NZP) CSI reference signal (CSI-RS) resources and an interference measurement (IM) on at least a second subset of the set of NZP CSI-RS resources. The second subset includes one or more NZP CSI-RS ports. The IM is performed according to assumptions: each NZP CSI-RS port in the second subset corresponds to an interference transmission layer, the IM being in accordance with a set of energy per resource element ratios each associated with one NZP CSI-RS resource in the second subset; and other interference not associated with the interference transmission layers is on the first and second subsets. The method includes generating a channel state information (CSI) report based on the CM and IM and transmitting the CSI report to a network.

公开(公告)号：US11283569B2

公开(公告)日：2022-03-22

申请号：US16788007

申请日：2020-02-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ruiqi Zhang ,  Jianqin Liu

IPC: H04L5/00

Abstract: This application provides a data transmission method, a network device, and a terminal device. The method includes: generating, by the network device, first information, where a value of a bit included in the first information is used to indicate a demodulation reference symbol (DMRS) port combination in a second set, each DMRS port combination in the second set belongs to a first set, the first set includes a plurality of DMRS port combinations, the DMRS port combination includes at least one DMRS port, and a quantity of DMRS port combinations included in the second set is less than a quantity of DMRS port combinations included in the first set; and sending, by the network device, the first information to the terminal device. According to embodiments of this application, signaling overheads can be reduced.

公开(公告)号：US11265045B2

公开(公告)日：2022-03-01

申请号：US16811002

申请日：2020-03-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ruiqi Zhang ,  Yongxing Zhou

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

Abstract: A method in the embodiments of this application includes: generating, by a terminal device, first information, where the first information includes parameters q, m1, m2, . . . , mL, and indication information of a vector V; q is an integer, and q 1; 0≤ml≤N−1, and 1≤l≤L; L>1, N, L, and l are integers, and N is a quantity of subbands in a frequency domain bandwidth; and the vector V includes L elements and satisfies V=Fq×C, where C is a vector formed by N elements c1, . . . , cN, C=[c1 c2 . . . cN]T, ck is used to indicate channel state information on a kth frequency domain subband, ck is a complex number, a modulus of ck is |ck|≤1, and 1≤k≤N; and sending, by the terminal device, the first information to a network device.

公开(公告)号：US11196466B2

公开(公告)日：2021-12-07

申请号：US17214175

申请日：2021-03-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi Zhang ,  Xueru Li

IPC: H04B7/02 ,  H04B7/0456

Abstract: Embodiments of this application provide a precoding matrix indication method, a communications apparatus, and a storage medium. A precoding matrix of each of K frequency-domain units satisfies W=W1×W2, and elements in W2 in the K frequency-domain units are represented by P elements that are relatively few. A terminal device reports third indication information, where the third indication information includes first indication information and the second indication information, and the first indication information and the second indication information are independently encoded. The first indication information is used to indicate the P elements, and the second indication information is used to indicate P. Therefore, the terminal device can adjust a quantity of information bits of the second indication information based on a channel condition change, thereby improving precoding matrix reporting efficiency.

公开(公告)号：US10778301B2

公开(公告)日：2020-09-15

申请号：US16696334

申请日：2019-11-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi Zhang ,  Xueru Li ,  Di Zhang

IPC: H04B7/02 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0413

Abstract: A channel state information sending method, a channel state information receiving method, and a device are disclosed, to reduce resource overheads required when a terminal device feeds back CSI to a network device in a scenario of a high precision codebook-based precoding matrix. The method includes: determining, by a terminal device, a precoding matrix W; sending, by the terminal device, a signal including CSI to a network device; obtaining, by the network device, an RI and indication information based on the signal including the CSI; obtaining, by the network device, a PMI2 based on the RI and the indication information; and determining, by the network device, the precoding matrix W based on the rank indicator RI and the second precoding matrix indicator PMI2.

公开(公告)号：US10756801B2

公开(公告)日：2020-08-25

申请号：US16360446

申请日：2019-03-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Di Zhang ,  Ruiqi Zhang

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0456 ,  H04L25/02 ,  H04L25/03 ,  H04L5/00 ,  H04L1/00

Abstract: The present disclosure provide a method and an apparatus for transmitting channel state information. A terminal device receives a reference signal from a network device, obtains a precoding matrix based on the reference signal. The terminal device determines first amplitude information and second amplitude information of the precoding matrix. The first amplitude information is used to indicate amplitude quantization information of a wideband, and the second amplitude information is used to indicate amplitude quantization information of N subbands of the wideband. The terminal device sends the first amplitude information and the second amplitude information to the network device.