公开(公告)号：US20210135726A1

公开(公告)日：2021-05-06

申请号：US17144626

申请日：2021-01-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xueru LI ,  Ruiqi ZHANG

IPC: H04B7/06

Abstract: A channel state information reporting method and apparatus are described. The method can include a terminal device obtaining first indication information and sending the first indication information to a network device. The network device receives the first indication information, where the first indication information indicates a differential value between channel state information of a first antenna port set and channel state information of a second antenna port set. The first antenna port set includes x antenna ports of the terminal device, the second antenna port set includes m antenna ports of the terminal device, and the first antenna port set is different from the second antenna port set. The channel state information reporting method and apparatus in embodiments of this application help improve accuracy of channel state information obtained by a network device, and improve data transmission performance.

公开(公告)号：US20200119787A1

公开(公告)日：2020-04-16

申请号：US16696334

申请日：2019-11-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi ZHANG ,  Xueru LI ,  Di ZHANG

IPC: 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：US20190393941A1

公开(公告)日：2019-12-26

申请号：US16559354

申请日：2019-09-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi ZHANG ,  Xueru LI

IPC: H04B7/0456 ,  H04B7/06 ,  H04L1/00 ,  H04L5/00

Abstract: This application provides a method for determining a precoding matrix set, so as to avoid a case in which a relatively large quantity of precoding matrices in a precoding matrix set cannot be used, thereby improving system performance. A terminal device receives indication information from a network device, and determines a second precoding matrix set front a first precoding matrix set whose rank is R based on the indication information. Each precoding matrix W in the first precoding matrix set satisfies W=W1×W2, the second precoding matrix set is a proper subset of the first precoding matrix set, and the second precoding matrix set does not include W=W1×W2 that satisfies the specific condition in the first precoding matrix set.

公开(公告)号：US20190149206A1

公开(公告)日：2019-05-16

申请号：US16248344

申请日：2019-01-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi ZHANG ,  Jianqin LIU

IPC: H04B7/0456 ,  H04L1/06

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 and determines a precoding matrix W in a precoding matrix set corresponding to a rank indication. W satisfies W=W1×W2×W3, where W1, W2 and W3 are 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.

公开(公告)号：US20180213527A1

公开(公告)日：2018-07-26

申请号：US15934336

申请日：2018-03-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianqin LIU ,  Ruiqi ZHANG ,  Kunpeng LIU

IPC: H04W72/04 ,  H04W72/08 ,  H04W24/10

CPC classification number: H04W72/0413 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/10 ,  H04W24/10 ,  H04W72/044 ,  H04W72/048 ,  H04W72/085

Abstract: Embodiments of the present invention disclose a resource selection method and apparatus. The method includes: configuring a CSI process for a second device, where the CSI process is corresponding to configuration information of K reference signal resources or configuration information of K reference signal antenna port groups; and sending a reference signal to the second device according to the configuration information corresponding to the CSI process, so that the second device obtains a corresponding channel quality measurement result by measuring the reference signal, where the channel quality measurement result includes a precoding matrix indicator (PMI), the PMI is used to indicate a serial number of a precoding matrix selected by the second device, the selected precoding matrix is a matrix in a preset precoding matrix set, and the preset precoding matrix set is determined according to K and a quantity T of beams that need to be selected.

公开(公告)号：US20230087165A1

公开(公告)日：2023-03-23

申请号：US17992644

申请日：2022-11-22

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. The terminal device can determine 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, M is a positive integer greater than or equal to 1, 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：US20220385435A1

公开(公告)日：2022-12-01

申请号：US17745349

申请日：2022-05-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xueru LI ,  Ruiqi ZHANG

IPC: H04L5/00 ,  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：US20210336677A1

公开(公告)日：2021-10-28

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 ,  H04W72/04

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：US20210306184A1

公开(公告)日：2021-09-30

申请号：US17340975

申请日：2021-06-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ruiqi ZHANG

IPC: H04L25/02 ,  H04L5/00

Abstract: Embodiments of this application provide an SRS sending method, an SRS receiving method, and a device. A manner of determining an antenna used to send an SRS is provided. In addition, a case in which one subframe includes a plurality of symbols is considered by using a quantity of first time units that are used by a terminal device to send an SRS in one uplink subframe and a case in which one antenna is enabled to implement continuous sending as much as possible is also considered by using a quantity of first time units that are consecutively used to send the SRS in one subframe by using a same antenna.

公开(公告)号：US20200007299A1

公开(公告)日：2020-01-02

申请号：US16568681

申请日：2019-09-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei HAN ,  Jinyao LIANG ,  Ruiqi ZHANG ,  Ting WANG ,  Huangping JIN ,  Shengyue DOU ,  Yuanjie LI

IPC: H04L5/00 ,  H04W72/04 ,  H04B17/309

Abstract: One example method for measuring a channel state information reference signal includes receiving, from a network device, a partial channel state information reference signal resource sets selected from a plurality of channel state information reference signal resource sets and indication information indicating one or more resource sets for channel measurement, which are from the partial channel state information reference signal resource sets, and performing channel measurement by using the one of the one or more resource sets for channel measurement indicated by the indication information.