Data sending and receiving method and communication apparatus

    公开(公告)号:US11956794B2

    公开(公告)日:2024-04-09

    申请号:US17246236

    申请日:2021-04-30

    CPC classification number: H04W72/23 H04W72/1273

    Abstract: This application provides a data sending and receiving method. The method includes: receiving, by a terminal device, a first PDCCH and a second PDCCH, where the first PDCCH is used to schedule a first PDSCH, and the first PDSCH is used to transmit first data; determining, based on the first PDCCH and the second PDCCH, a first resource used to transmit the first data, where the first resource is a part or all of a resource of the first PDSCH; and receiving, by the terminal device, the first data from a network device on the first resource. The first resource is determined with reference to the first PDCCH and the second PDCCH, to avoid a problem that receiving performance of the first PDSCH and the second PDCCH may deteriorate when a resource of the second PDCCH overlaps the resource of the first PDSCH.

    Channel estimation method and apparatus

    公开(公告)号:US11929801B2

    公开(公告)日:2024-03-12

    申请号:US18304132

    申请日:2023-04-20

    CPC classification number: H04B7/0456 H04L25/0204 H04B7/0417

    Abstract: Embodiments of this application provide a channel estimation method and apparatus, and relate to the field of communications technologies, to help reduce indication overheads. The method includes: generating and sending indication information, wherein the indication information is used to indicate M N-dimensional precoding vectors, each precoding vector is applied to one of M frequency bands, the M N-dimensional precoding vectors form a space-frequency matrix, and the space-frequency matrix is generated by performing weighted combination on a plurality of space-frequency component matrices, wherein the space-frequency matrix is an M×N-dimensional space-frequency vector or an X×Y space-frequency matrix, X and Y are one and the other of M and N, M≥1, N≥2, and both M and N are integers.

    Search space blind detection method and communication apparatus

    公开(公告)号:US11804924B2

    公开(公告)日:2023-10-31

    申请号:US17408941

    申请日:2021-08-23

    CPC classification number: H04L1/0038

    Abstract: A search space blind detection method and a communication apparatus. The method includes: a terminal receives indication information that corresponds to a first search space set and that is sent by a network device, where the indication information is used to indicate one or more search space groups, one search space group includes at least two search spaces having an association relationship, and at least one search space in one search space group belongs to the first search space set; and then, the terminal determines, based on the indication information, a quantity of blind detection times corresponding to the first search space set. The quantity of blind detection times corresponding to the first search space set is determined by considering an association relationship between a plurality of search spaces.

    CHANNEL ESTIMATION METHOD AND APPARATUS
    54.
    发明公开

    公开(公告)号:US20230299820A1

    公开(公告)日:2023-09-21

    申请号:US18304132

    申请日:2023-04-20

    CPC classification number: H04B7/0456 H04L25/0204 H04B7/0417

    Abstract: Embodiments of this application disclose a channel estimation method and apparatus, and relate to the field of communications technologies, to help reduce indication overheads. The method may include: generating and sending indication information, where the indication information is used to indicate M N-dimensional precoding vectors, each precoding vector is applied to one of M frequency bands, the M N-dimensional precoding vectors form a space-frequency matrix, and the space-frequency matrix is generated by performing weighted combination on a plurality of space-frequency component matrices, where the space-frequency matrix is an M×N-dimensional space-frequency vector or an X×Y space-frequency matrix, X and Y are one and the other of M and N, M≥1, N≥2, and both M and N are integers.

    Channel estimation method and apparatus

    公开(公告)号:US11736157B2

    公开(公告)日:2023-08-22

    申请号:US17873393

    申请日:2022-07-26

    CPC classification number: H04B7/0417 H04B7/046 H04B7/0634 H04L25/0204

    Abstract: Embodiments of this application disclose a channel estimation method and apparatus, and relate to the field of communications technologies. One example method include: generating and sending indication information, where the indication information is used to indicate L space-frequency basis vectors for constructing an M×N-dimensional space-frequency vector; the space-frequency vector includes M N-dimensional precoding vectors, each precoding vector is used in one of M frequency bands, and the space-frequency vector is generated by performing a weighted combination on L space-frequency component vectors; each of the L space-frequency component vectors is a vector including M×N elements that are in one of the L space-frequency basis vectors, and each of the L space-frequency basis vectors is an Nf×N-dimensional vector; the space-frequency basis vector is a three-dimensional oversampled (DFT) vector; and L≥2, Nf≥M≥1, N≥2, and L, M, N, and Nf are all integers.

    Method for indicating vectors used to construct precoding vector and communications apparatus

    公开(公告)号:US11581925B2

    公开(公告)日:2023-02-14

    申请号:US17361708

    申请日:2021-06-29

    Abstract: This application provides a methods and apparatuses for generating precoding vectors. One method comprises: generating a channel state information (CSI) report, wherein the CSI report indicates a quantity of space-frequency vector pairs to be reported for each of a quantity of R transport layers, wherein a size of an overhead for indicating the quantity of the space-frequency vector pairs is unrelated to the quantity of R, wherein each of the space-frequency vector pairs comprises one spatial domain vector and one frequency domain vector, wherein for each of the R transport layers, one or more frequency domain units associated with the transport layer correspond to one or more precoding vectors, and wherein each of the one or more precoding vectors is constructed by one or more space-frequency vector pairs to be reported for the corresponding transport layer in the R transport layers; and transmitting the CSI report.

    Data transmission method, receive end device, and non-transitory computer-readable storage medium

    公开(公告)号:US11463207B2

    公开(公告)日:2022-10-04

    申请号:US16810716

    申请日:2020-03-05

    Abstract: A data transmission method between a plurality of transmit end devices and a receive end device includes receiving at least one piece of transmission control information. The at least one piece of transmission control information includes transmission control information received by the receive end device from at least one of the plurality of transmit end devices, and transmission control information from each of the plurality of transmit end devices includes a retransmission process identifier. The transmission control information controls data transmission between transmit and receive end devices. The method also includes for each of the at least one piece of transmission control information, determining the transmit end device configured to send the piece of transmission control information, and performing a retransmission control operation on the data transmission received by the receive end device. The retransmission control operation includes the retransmission process identifier included in the piece of transmission control information.

    Channel Measurement Method and Communications Apparatus

    公开(公告)号:US20220094412A1

    公开(公告)日:2022-03-24

    申请号:US17541997

    申请日:2021-12-03

    Abstract: A channel measurement method and a communications apparatus, the method including generating, by a terminal device, first indication information, where the first indication information indicates one or more component features of a time-varying feature, and further indicates a weighting coefficient of each component feature of the one or more component features, and the one or more component features and the weighting coefficient of each component feature represent the time-varying feature of a channel, and sending, by the terminal device, the first indication information to a network device.

    Channel estimation method and apparatus

    公开(公告)号:US11133847B2

    公开(公告)日:2021-09-28

    申请号:US17094252

    申请日:2020-11-10

    Abstract: This application discloses a channel estimation method and apparatus, and relates to the field of communications technologies, to help reduce indication overheads. The method may include: generating and sending indication information. The indication information indicates K N-dimensional spatial-domain component vectors, L M-dimensional frequency-domain component vectors, and a weight matrix, for constructing an M×N-dimensional spatial-frequency matrix, or an M×N or N×M spatial-frequency matrix.

Patent Agency Ranking