DIFFERENTIAL CHANNEL STATE INFORMATION (CSI) REPORTING FOR HIGHER RESOLUTION CSI

    公开(公告)号:US20180278315A1

    公开(公告)日:2018-09-27

    申请号:US15928326

    申请日:2018-03-22

    Abstract: Techniques and apparatus for differential channel state information (CSI) reporting for high resolution CSI are provided. One technique includes receiving a CSI reference signal (CSI-RS). First feedback components associated with first CSI feedback for a first CSI feedback stage are determined based on the CSI-RS, and the first feedback components are reported to a base station. Second feedback components associated with at least one second CSI feedback for at least one second CSI feedback stage are determined based in part on the first feedback components, and the second feedback components are reported to the base station. A precoding for multiple input multiple output (MIMO) communications is determined based on the first feedback components and the second feedback components.

    REPORTING COHERENT JOINT TRANSMISSION TYPE II CHANNEL STATE INFORMATION FEEDBACK

    公开(公告)号:US20250167860A1

    公开(公告)日:2025-05-22

    申请号:US18839217

    申请日:2022-04-29

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive one or more reference signals from a plurality of transmit receive points (TRPs) associated with a network entity. The UE may transmit, to the network entity and based at least in part on the one or more reference signals, a coherent joint transmission (CJT) Type II channel state information (CSI) feedback report. The CJT Type II CSI feedback report may be based at least in part on a two-stage frequency domain (FD) basis reporting irrespective of a quantity of precoding matrix indicator (PMI) subbands. The CJT Type II CSI feedback report may be based at least in part on selecting coefficients from high-priority coefficients and excluding low-priority coefficients irrespective of coefficient strengths associated with the low-priority coefficients. Numerous other aspects are described.

    DETERMINING TRANSMIT PRECODING MATRIX INDICATORS BASED ON DEVICE FEEDBACK

    公开(公告)号:US20250080177A1

    公开(公告)日:2025-03-06

    申请号:US18949792

    申请日:2024-11-15

    Abstract: Methods, systems, and devices for wireless communications are described for enabling a network equipment to reduce interference for downlink (DL) transmissions to a first device by determining a transmit precoding matrix indicator (TPMI) for uplink (UL) transmissions transmitted by a second device based on feedback from the first device. The first device may determine a subset of possible TPMIs that the second device may use for UL transmissions for full-duplex communications. The first device may indicate the subset to the network equipment. Based on the subset indicated by the first device, the network equipment may determine a pairing of the first device and the second device for full-duplex communications. Additionally, the network equipment may determine a TPMI for the second device to use in UL transmissions and indicate the TPMI to the second device.

    PRECODER MATRIX QUANTIZATION FOR COMPRESSED CSI FEEDBACK

    公开(公告)号:US20240333356A1

    公开(公告)日:2024-10-03

    申请号:US18740247

    申请日:2024-06-11

    CPC classification number: H04B7/0626 H04B7/0417 H04B7/0634 H04B7/0658

    Abstract: Certain aspects of the present disclosure provide techniques for precoder matrix quantization for compressed channel state information (CSI) feedback. A method for wireless communications by a user equipment (UE) includes receiving a CSI report configuration for frequency domain compressed precoder matrix feedback. The CSI report configuration configures the UE to report, for a plurality of selected beams at a plurality of time domain taps, a frequency domain compression basis vector and a plurality of linear combination coefficients associated with the frequency domain compression. For each of the beams, the UE groups the time domain taps into at least first and second groups. The groups each can have zero, one, or more than one time domain taps. The UE quantizes the corresponding linear combination coefficients and/or frequency domain compression basis vectors based on the grouping.

    FORWARD ERROR CORRECTION CODE RATE SELECTION FOR A FOUNTAIN CODE SYSTEM

    公开(公告)号:US20240014921A1

    公开(公告)日:2024-01-11

    申请号:US18252648

    申请日:2021-01-19

    CPC classification number: H04L1/0002 H04L1/0041 H04L1/0026

    Abstract: Aspects of the present disclosure relate to selection of a coding rate for forward error correction coding associated with Fountain code encoding. According to some aspects, a wireless device may determine a plurality of block error rates associated with a channel between the wireless device and a second device, the plurality of block error rates being associated with a plurality of coding rates. The wireless device may select a coding rate from the plurality of coding rates for forward error correction coding based on the plurality of block error rates and the plurality of coding rates. The wireless device may encode a source data packet using a Fountain code to produce a codeword, and perform the forward error correction coding on the codeword based on the selected coding rate to produce a transmit signal. The wireless device may transmit the transmit signal to the second device.

    GRADIENT DATASET AWARE CONFIGURATION FOR OVER-THE-AIR (OTA) MODEL AGGREGATION IN FEDERATED LEARNING

    公开(公告)号:US20230413070A1

    公开(公告)日:2023-12-21

    申请号:US18030261

    申请日:2020-12-14

    CPC classification number: H04W24/02 G06N3/098 H04W72/04

    Abstract: A method performed by a user equipment (UE) generates local gradients for a federated learning task. The method calculates a gradient Sum-Power level based on the local gradients. The method receives a mapping between gradient Sum-Power levels and scaling factors for channel inversion coefficients to process a data block into an unencoded uplink signal. The method also determines a channel inversion coefficient based on a scaling factor obtained from the mapping and the calculated gradient Sum-Power level. The method applies analog modulation and the channel inversion coefficient to the data block to form the unencoded uplink signal. The method further transmits, to a network, the unencoded uplink signal on shared uplink resources for an over-the-air computation of global gradients for the federated learning task.

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