Data transmission method and device to reduce complexity of interleaving modulation symbols

    公开(公告)号:US11251997B2

    公开(公告)日:2022-02-15

    申请号:US16822781

    申请日:2020-03-18

    Abstract: This application provides a data transmission method and a device. The method includes: obtaining, by a transmit end device, a modulation symbol sequence in multiple time-frequency resource element groups, wherein a size of the time-frequency resource element group is agreed on in a protocol, or determined based on a transmission parameter; performing, by the transmit end device, interleaving processing on the modulation symbol sequence using the time-frequency resource element group as an interleaving unit, to obtain an order in which the modulation symbol sequence is mapped onto the multiple time-frequency resource element groups, wherein multiple consecutive modulation symbol groups in the modulation symbol sequence are mapped onto at least two of the multiple time-frequency resource element groups; and sending, by the transmit end device, the modulation symbol sequence in the order in which the modulation symbol sequence is mapped onto the multiple time-frequency resource element groups.

    Reference signal transmission technology

    公开(公告)号:US11239969B2

    公开(公告)日:2022-02-01

    申请号:US16576114

    申请日:2019-09-19

    Abstract: Example reference signal transmission methods and apparatus are described. In one example method, a base station divides a transmission bandwidth into a plurality of frequency domain units, and sends reference signal sending configuration information to a terminal. The terminal transmits a reference signal on one or more frequency domain units. The one or more frequency domain units and another frequency domain unit form a part of the transmission bandwidth supported by the base station. The terminal sends the reference signal on the one or more frequency domain units to the base station based on the reference signal sending configuration information.

    Method and apparatus for obtaining downlink channel information

    公开(公告)号:US11363585B2

    公开(公告)日:2022-06-14

    申请号:US16906292

    申请日:2020-06-19

    Abstract: A method and an apparatus for obtaining downlink channel information are provided. The method includes, at least, receiving a first pilot signal sent by user equipment by using N first antenna ports, and determining, based on the received first pilot signal, a downlink channel gain matrix corresponding to the N first antenna ports, determining, based on the downlink channel gain matrix corresponding to the N first antenna ports, a first weight matrix corresponding to the N first antenna ports, and sending a second pilot signal to the user equipment. The method further includes receiving a precoding matrix indicator PMI fed back by the user equipment, determining a second weight matrix based on the PMI, and determining, based on the first weight matrix and the second weight matrix, downlink channel information that corresponds to the N first antenna ports and that corresponds to the M second antenna ports.

    Data processing method and terminal device

    公开(公告)号:US10015306B2

    公开(公告)日:2018-07-03

    申请号:US15505149

    申请日:2014-08-20

    Abstract: A data processing method and a terminal device, where the method includes obtaining a speed of the terminal device, receiving a first communications service, disabling a preset reminder of the first communications service when the speed of the terminal device exceeds a first preset value, and enabling the preset reminder of the first communications service when the speed of the terminal device decreases to a second preset value, where the second preset value is less than or equal to the first preset value. The data processing method and the terminal device are used for a user reminder of a terminal device in a vehicle mode.

    Downlink control information transmission method, apparatus, and system

    公开(公告)号:US11979225B2

    公开(公告)日:2024-05-07

    申请号:US17487397

    申请日:2021-09-28

    CPC classification number: H04J13/004 H04L5/0051 H04W72/0446 H04W72/23

    Abstract: Embodiments of this application provide a downlink control information transmission method in which after receiving one piece of downlink control information (DCI), the terminal device learns whether blind detection of DCI needs to be continued. The method includes: A terminal device receives first DCI, where the first DCI includes first indication information, and the first indication information is used to indicate a first antenna port. The terminal device determines, based on the first antenna port and antenna port configuration information, whether second DCI exists. The configuration information may include an index of a CDM group to which each of a plurality of antenna ports belongs and a maximum quantity of CDM groups that is supported by the terminal device. Alternatively the configuration information may include one or more antenna port groups, and each of the one or more antenna port groups includes one or more antenna ports.

    Communication method and apparatus for indicating beam quality

    公开(公告)号:US11445388B2

    公开(公告)日:2022-09-13

    申请号:US16858327

    申请日:2020-04-24

    Abstract: This disclosure relates to a communication method and apparatus. The method includes: receiving, by a terminal device, a reference signal sent by a network device; measuring the reference signal to obtain at least one piece of beam quality; and reporting specified differential beam quality indication information to the network device, where the specified differential beam quality indication information is used to indicate that beam quality reporting is abnormal, and/or the specified differential beam quality indication information is used to indicate that beam quality corresponding to the specified differential beam quality indication information is a specified value. A corresponding apparatus is further disclosed. According to the solution in this disclosure, specified differential beam quality indication information is used to indicate that beam quality reporting is abnormal or indicate that beam quality is a specified value, so that beam quality can be accurately reported.

    Method and apparatus for sending sounding reference signal SRS

    公开(公告)号:US11233609B2

    公开(公告)日:2022-01-25

    申请号:US16875755

    申请日:2020-05-15

    Abstract: This application provides a method including: receiving first configuration information of a sounding reference signal (SRS) resource from a network device, where the first configuration information includes a repetition factor of the SRS resource, and the repetition factor of the SRS resource is a quantity N of positions at which the SRS resource is mapped to a same subcarrier and mapped to at least one continuous symbol in one time unit, where N≥1 and is an integer; determining at least one first frequency domain resource to which the SRS resource is mapped in a first time unit.

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