Method and apparatus for obtaining channel state information

    公开(公告)号:US10447369B2

    公开(公告)日:2019-10-15

    申请号:US15858969

    申请日:2017-12-29

    Abstract: Embodiments of the present disclosure provide a method for obtaining channel state information, including: sending, by a base station, one or multiple pieces of downlink signaling to user equipment, where the one or multiple pieces of downlink signaling instruct the user equipment to feed back channel dimension information, where the channel dimension information includes an effective dimension of a channel subspace of a statistical channel between the base station and the user equipment, and the effective dimension of the channel subspace is less than a quantity of reference signal ports used to measure channel state information; and receiving, by the base station, the channel dimension information fed back by the user equipment.

    TRANSMISSION CONTROL METHOD, APPARATUS, AND SYSTEM, AND STORAGE MEDIUM

    公开(公告)号:US20190261334A1

    公开(公告)日:2019-08-22

    申请号:US16401788

    申请日:2019-05-02

    Inventor: Ye Wu Xiaoyan Bi

    Abstract: This application discloses a transmission control method, apparatus, and system, and a storage medium, and belongs to the field of communications technologies. The method includes: generating target control format indicator information, where the target control format indicator information is used to indicate a target time-frequency resource occupied by a downlink control channel; and sending the target control format indicator information. According to this application, a problem that a time-frequency resource occupied by a downlink control channel cannot be adjusted can be resolved, and the time-frequency resource occupied by the downlink control channel can be flexibly adjusted. This application is used for transmission control.

    RANK INDICATION METHOD, RANK INDICATION REPORTING METHOD, DEVICE AND SYSTEM, AND STORAGE MEDIUM

    公开(公告)号:US20190181929A1

    公开(公告)日:2019-06-13

    申请号:US16237509

    申请日:2018-12-31

    Abstract: This application provides a technical solution for rank indication, and especially when a CQI number is not configured or a CQI number is 1, a network device configures a rank indication restriction parameter as that at least one of ranks whose index numbers are 0, 1, 2, and 3 is allowed to be reported by the terminal device; or even if the network device does not perform the foregoing configuration, and none of the ranks whose index numbers are 0, 1, 2, and 3 is allowed to be reported, the terminal device may select at least one rank for RI reporting, so as to resolve a problem that a system cannot work. In addition, according to embodiments of this application, bit overheads required for RI reporting may further be reduced.

    METHOD AND APPARATUS FOR OBTAINING CHANNEL STATE INFORMATION

    公开(公告)号:US20180123671A1

    公开(公告)日:2018-05-03

    申请号:US15858969

    申请日:2017-12-29

    Abstract: Embodiments of the present disclosure provide a method for obtaining channel state information, including: sending, by a base station, one or multiple pieces of downlink signaling to user equipment, where the one or multiple pieces of downlink signaling instruct the user equipment to feed back channel dimension information, where the channel dimension information includes an effective dimension of a channel subspace of a statistical channel between the base station and the user equipment, and the effective dimension of the channel subspace is less than a quantity of reference signal ports used to measure channel state information; and receiving, by the base station, the channel dimension information fed back by the user equipment.

    PRECODING INFORMATION OBTAINING APPARATUS, METHOD, AND SYSTEM

    公开(公告)号:US20170214449A1

    公开(公告)日:2017-07-27

    申请号:US15481845

    申请日:2017-04-07

    Abstract: Embodiments of the present invention provide a precoding information obtaining apparatus. The apparatus includes: a determining module, configured to determine a transformation quantity according to a steering vector of an antenna form and a departure-angle range; a sending module, configured to send, to a terminal, information about the transformation quantity determined by the determining module, where the information about the transformation quantity is used by the terminal to determine a PMI according to the information about the transformation quantity, a codebook used for obtaining channel information, and a pilot measurement result; and a receiving module, configured to receive the PMI reported by the terminal. A network node sends a transformation quantity containing antenna information to a terminal, and the terminal feeds back a PMI according to the transformation quantity.

    COMMUNICATION METHOD AND COMMUNICATION APPARATUS

    公开(公告)号:US20250080268A1

    公开(公告)日:2025-03-06

    申请号:US18951683

    申请日:2024-11-19

    Abstract: A communication method and a communication apparatus are provided. The method includes: a first device first checks a first bit sequence based on a cyclic redundancy check (CRC) code, to obtain a second bit sequence; then divides the second bit sequence into P bit sequences; and generates Q codewords based on the P bit sequences, and sends the Q codewords to a second device through P transport layers. P represents a quantity of transport layers of the first device, P is greater than or equal to 2, and Q is an integer greater than or equal to 2. The first device first checks the first bit sequence based on the CRC code, and then divides the second bit sequence into the P bit sequences, that is, performs code rate allocation.

    Frequency domain resource allocation method and apparatus

    公开(公告)号:US12238021B2

    公开(公告)日:2025-02-25

    申请号:US17672495

    申请日:2022-02-15

    Abstract: Example frequency domain resource allocation methods and apparatus are described. One example method includes determining M frequency domain resources according to a predetermined frequency domain resource allocation rule, and performing communication on one or more of the M frequency domain resources. Any two of the M frequency domain resources do not overlap. Each of the M frequency domain resources is associated with one piece of quasi-colocation (QCL) information, and any two of the M frequency domain resources are associated with different QCL information.

    Communication method and communications apparatus

    公开(公告)号:US12200521B2

    公开(公告)日:2025-01-14

    申请号:US17672531

    申请日:2022-02-15

    Abstract: This disclosure provides a communication method to implement a function of a hybrid automatic repeat request (HARQ) feedback codebook in a multi-station scenario. A terminal device receives a configuration group identifier, determines a physical downlink shared channel (PDSCH) reception occasion corresponding to the configuration group identifier, and transmits feedback information of the PDSCH reception occasion based on the configuration group identifier corresponding to the PDSCH reception occasion and according to a predetermined rule of feedback sorting.

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