公开(公告)号：US10419090B2

公开(公告)日：2019-09-17

申请号：US16148296

申请日：2018-10-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi Zhang ,  Jianqin Liu

IPC: H04B7/02 ,  H04B7/0456 ,  H04L1/06 ,  H04B7/06 ,  H04W84/04

Abstract: A method and apparatus for precoding matrix indicator feedback reduce a quantity of bits in the feedback. In the method, a terminal device receive a reference signal from a base station, determines a precoding matrix W in a precoding matrix set corresponding to a rank indication. W satisfies W=W1×W2×W3, W1, W2 and W3 and matrices and respectively corresponding to a first, second and third precoding matrix indicator. None of W1, W2, and W3 is an identity matrix, and the 2M columns in W1 comprise every column in W1×W2. The terminal device transmits the rank indication, the first precoding matrix indicator, the second precoding matrix indicator, and the third precoding matrix indicator to the base station. Therefore, a quantity of to-be-selected vectors is reduced by using a first-stage feedback and a second-stage feedback, thereby reducing calculation complexity of third-stage feedback, and reducing a quantity of bits in the third-stage feedback.

公开(公告)号：US20190181931A1

公开(公告)日：2019-06-13

申请号：US16279329

申请日：2019-02-19

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：US20230422073A1

公开(公告)日：2023-12-28

申请号：US18335698

申请日：2023-06-15

Applicant: Huawei Technologies Co., Ltd.

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

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

CPC classification number: H04W24/10 ,  H04L1/0026 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/0053 ,  H04L5/005 ,  H04L5/001 ,  H04L25/02

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：US11728934B2

公开(公告)日：2023-08-15

申请号：US17653075

申请日：2022-03-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xueru Li ,  Ruiqi Zhang ,  Hao Sun

IPC: H04W72/04 ,  H04L1/1607 ,  H04L1/00 ,  H04L5/00 ,  H04L5/10 ,  H04W24/10 ,  H04L27/26 ,  H04W72/21 ,  H04W72/23

CPC classification number: H04L1/1671 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0051 ,  H04L5/10 ,  H04L27/261 ,  H04L27/2602 ,  H04W24/10 ,  H04W72/21 ,  H04W72/23 ,  H04L5/0048

Abstract: This application provides an information transmission method and apparatus. The method includes: receiving, by a terminal device, a plurality of pieces of downlink control information DCI, where each of the plurality of pieces of DCI is used to trigger reporting of one piece of UCI and indicate a physical uplink control channel PUCCH resource carrying the UCI, the UCI includes at least one piece of channel state information CSI and response information, and PUCCH resources indicated by the plurality of pieces of downlink DCI occupy at least one same orthogonal frequency division multiplexing OFDM symbol; and sending, by the terminal device, target UCI on a target PUCCH resource, where the target UCI includes UCI triggered by the plurality of pieces of DCI, and the target PUCCH resource is one of the PUCCH resources indicated by the plurality of pieces of DCI.

公开(公告)号：US11716647B2

公开(公告)日：2023-08-01

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 ,  H04L25/02

CPC classification number: H04W24/10 ,  H04L1/0026 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/001 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0053 ,  H04L25/02

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：US11540259B2

公开(公告)日：2022-12-27

申请号：US16992779

申请日：2020-08-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xueru Li ,  Ruiqi Zhang

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00

Abstract: One example method includes determining, by a terminal device, that at least two physical uplink control channel (PUCCH) resources collide in a time unit n, where n is an integer, and the at least two PUCCH resources include a first resource configured for first uplink control information (UCI) and a second resource configured for second UCI; and determining, by the terminal device, the first resource and a third resource in the time unit n, where the third resource is one of M PUCCH resources, the first resource and the third resource do not include a same orthogonal frequency division multiplexing (OFDM) symbol in time domain, and M is a positive integer greater than or equal to 1, and the first resource is used to carry a part or all of the first UCI, and the third resource is used to carry a part or all of the second UCI.

公开(公告)号：US11483854B2

公开(公告)日：2022-10-25

申请号：US17062208

申请日：2020-10-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hao Sun ,  Yongzhao Cao ,  Hua Li ,  Ruiqi Zhang ,  Lixia Xue

IPC: H04W72/12 ,  H04L1/18 ,  H04L5/00

Abstract: This application discloses methods an apparatuses for sending and receiving uplink control information in the field of communications technology. In some implementations, a terminal device may receive first downlink control information (DCI) from a network device; determine, based on the received first DCI, that an uplink shared channel scheduled by using the first DCI is used to send only uplink control information (UCI); and send first UCI to the network device through the uplink shared channel scheduled by using the first DCI. In other words, the network device indicates to the terminal device by using DCI so that the terminal device can determine, based on an indication of the network device, whether the uplink shared channel scheduled by using the DCI is used to send only the UCI.

公开(公告)号：US11381291B2

公开(公告)日：2022-07-05

申请号：US16715821

申请日：2019-12-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi Zhang ,  Xueru Li ,  Di Zhang

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/0413 ,  H04W24/08 ,  H04W24/10

Abstract: The present disclosure relates to channel state measurement methods and apparatus. One example method includes selecting, by a network device from N channel state information reference signal (CSI-RS) resources, a target CSI-RS resource and a target channel state information-interference measurement (CSI-IM) resource group associated with the target CSI-RS resource, where an ith CSI-RS resource in the N CSI-RS resources is associated with ni CSI-IM resource groups, and a kth CSI-IM resource group in the ni CSI-IM resource groups includes xik CSI-RS resources in the N CSI-RS resources except the ith CSI-RS resource, and sending, by the network device, first indication information by using first signaling, where the first indication information indicates the target CSI-RS resource and the target CSI-IM resource group.

公开(公告)号：US11349541B2

公开(公告)日：2022-05-31

申请号：US16714244

申请日：2019-12-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xueru Li ,  Ruiqi Zhang

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

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 indicating a threshold associated with a quantity of resource elements (REs) configured for all or a portion of channel state information (CSI) on an uplink channel; and sending, by the terminal device, the all or the portion of the CSI based on a comparison result of the reference information and a status parameter, wherein the status parameter indicates a quantity of REs occupied by the CSI on the uplink channel.

公开(公告)号：US11290164B2

公开(公告)日：2022-03-29

申请号：US16943347

申请日：2020-07-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi Zhang ,  Xueru Li

IPC: H04B7/0456

Abstract: Embodiments of a channel state information (CSI) reporting method and apparatus are disclosed. A method includes: receiving, by a first communications apparatus, reference signals from a second communications apparatus; and performing, by the first communications apparatus, channel measurement based on the reference signals, and sending first CSI to the second communications apparatus in a time unit whose identifier is m, where the first CSI is used to indicate a channel state in a first reference time unit and a channel state in a second reference time unit, where an identifier of the first reference time unit is m−n1, an identifier of the second reference time unit is m−n1−n2, where m, n1, and n2 are integers, and n2 is not equal to 0. This way, matching is improved between CSI applied by a network device and a channel that is at a current moment.