Channel state information feedback in wireless communication

    公开(公告)号:US11917444B2

    公开(公告)日:2024-02-27

    申请号:US17529076

    申请日:2021-11-17

    CPC classification number: H04W24/10 H04B17/345

    Abstract: Aspects of the disclosure relate to wireless communication using channel state information (CSI) correlation information for determining the validity of a CSI report. A user equipment (UE) can determine the CSI correlation information based on reference signal resources scheduled for measuring CSI and interference on a channel between the UE and a network entity. In some aspects, the CSI correlation information can be determined based on channel correlation information and/or interference correlation information.

    CSI based on code block segmentation

    公开(公告)号:US11909483B2

    公开(公告)日:2024-02-20

    申请号:US17447049

    申请日:2021-09-07

    CPC classification number: H04B7/0626 H04B17/318 H04W24/10

    Abstract: Aspects are provided which allow a base station to segment a code block into individual code block segments and a UE to determine and indicate a quality of the individual code block segments in a CSI report to a base station. The base station transmits a code block to the UE which includes a plurality of code block segments. The UE determines a code block segment quality of each of the code block segments, and sends a CSI report including one or more of the code block segment qualities to the base station. Thus, the code block segment qualities indicated by the UE allow the base station to determine which segments of the code block should be re-transmitted, for example, based on a best RV to be applied for the code block retransmission, thereby improving retransmission performance.

    FEEDBACK CODEBOOK CONSTRUCTION FOR CONTROL CHANNEL CARRIER SWITCHING

    公开(公告)号:US20240056908A1

    公开(公告)日:2024-02-15

    申请号:US17885208

    申请日:2022-08-10

    CPC classification number: H04W36/0055 H04W36/0016 H04W72/0406 H04W72/044

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may generate feedback messages according to a feedback codebook according to a feedback scheme indicating whether the UE is to include, or exclude, feedback information for physical downlink shared channels (PDSCHs) occurring prior to a bandwidth part (BWP) switch. For example, the UE may determine whether to include feedback information for any PDSCHs that occur prior to an uplink BWP switch for a UE that supports cell switching based on the cell in which the uplink BWP switch occurs, the cell in which the feedback message is scheduled for transmission (e.g., the same cell in which the PDSCHs occur, or a different cell), and a mode of PUCCH cell switching (e.g., dynamic or semi-static). The UE may also determine whether to send retransmissions of feedback information after a BWP switch.

    SRS design supporting multiple antennas

    公开(公告)号:US11895047B2

    公开(公告)日:2024-02-06

    申请号:US17069850

    申请日:2020-10-13

    CPC classification number: H04L5/0048 H04W72/1268

    Abstract: A user equipment (UE) sends an indication supported combinations of sounding reference signal (SRS) resources, unsupported combinations of SRS resources, or compatible SRS resources to a base station. The base station selects one or more SRS resources for the UE from the SRS resources that are supported by the UE or are compatible for the UE. In some examples, the UE receives a configuration from the base station for multiple SRS resource sets. After configuring the UE with multiple SRS resource sets, the base station selects one of the SRS resources sets, and may indicate the selected SRS resource set to the UE. The UE transmits a physical uplink shared channel (PUSCH) to the base station using SRS resources from the selected SRS resource set.

    Optimization of channel quality indicator (CQI) feedback for multiple component carriers

    公开(公告)号:US11877173B2

    公开(公告)日:2024-01-16

    申请号:US17303045

    申请日:2021-05-19

    CPC classification number: H04W24/10 H04W72/1268 H04W72/23

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a plurality of communications on a plurality of component carriers. The UE may transmit, to the base station, uplink control information that includes a first portion that indicates respective feedback for the plurality of communications, and a second portion that indicates an average channel quality indicator (CQI) value and respective differential values, relative to the average CQI value, for multiple communications, of the plurality of communications, for which negative acknowledgment feedback is transmitted. Numerous other aspects are provided.

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