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    CHANNEL STATE INFORMATION (CSI) PROCESSING FOR PDSCH AND DMRS BASED CSI
    22.
    发明公开
    CHANNEL STATE INFORMATION (CSI) PROCESSING FOR PDSCH AND DMRS BASED CSI 审中-公开

    公开(公告)号：US20230254086A1

    公开(公告)日：2023-08-10

    申请号：US18004540

    申请日：2020-08-14

    Applicant: QUALCOMM Incorporated

    Inventor： Chenxi Hao ,  Yu Zhang ,  Chao Wei ,  Fang Yuan ,  Liangming Wu ,  Wanshi Chen ,  Hao Xu

    IPC: H04L5/00

    CPC classification number: H04L5/0051 ,  H04L5/0064 ,  H04L5/0057

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for transmitting a channel state information (CSI) report from a user equipment (UE). The CSI report may be a UE initiated CSI report or may be based on a downlink grant. The UE may determine to transmit the CSI report based on measurement using a physical downlink control channel (PDSCH) and/or a demodulation reference signal (DMRS). The UE may determine a reference resource for CSI feedback. The UE may calculate a channel quality indicator (CQI) based on the reference resource. The UE may transmit the CQI in the CSI report on an uplink resource.

    Reduced overhead error detection code design for decoding a codeword
    23.
    发明授权
    Reduced overhead error detection code design for decoding a codeword 有权

    公开(公告)号：US11695505B2

    公开(公告)日：2023-07-04

    申请号：US17500347

    申请日：2021-10-13

    Applicant: Qualcomm Incorporated

    Inventor： Changlong Xu ,  Liangming Wu ,  Jian Li ,  Kai Chen ,  Jing Jiang ,  Gabi Sarkis ,  Hao Xu

    IPC: H04L1/00 ,  H04L1/1812

    CPC classification number: H04L1/0052 ,  H04L1/0041 ,  H04L1/0061 ,  H04L1/1812

    Abstract: Methods, systems, and devices for wireless communications are described. An encoder of a wireless device may receive a transport block (TB) for transmission and segment the transport block into a set of multiple, smaller data segments that respectively correspond to a plurality of code blocks of the TB. The encoder may generate a code block level (CB-level) error detection code (EDC) for a subset of the data segments. The encoder may generate a transport block-level (TB-level) EDC for the TB using the data segments. Each of the code blocks (CBs) may be of the same size and may include one of the data segments. A subset of the CBs may include a data segment from the subset of the data segments and one of the CB-level EDCs. The remaining CBs that are not part of the subset may include a remaining data segments and the TB-level EDC.

    PACKET ENCODING BASED ON RAPTOR CODES TO ENABLE ADAPTIVE PHYSICAL LAYER ERROR RATE DETERMINATION OR SELECTION
    24.
    发明公开
    PACKET ENCODING BASED ON RAPTOR CODES TO ENABLE ADAPTIVE PHYSICAL LAYER ERROR RATE DETERMINATION OR SELECTION 审中-公开

    公开(公告)号：US20230198668A1

    公开(公告)日：2023-06-22

    申请号：US17996072

    申请日：2020-04-24

    Applicant: QUALCOMM Incorporated

    Inventor： Kangqi Liu ,  Changlong Xu ,  Liangming Wu ,  Jian Li ,  Hao Xu

    IPC: H04L1/00

    CPC classification number: H04L1/0064 ,  H04L1/0046 ,  H04L1/0041

    Abstract: In one aspect of the disclosure, a method of wireless communication performed by a receiving device includes receiving, from a transmitting device, a plurality of encoded packets each including at least one respective physical (PHY) layer symbol. The method includes decoding the plurality of encoded packets based on a raptor code to generate received data. The method also includes determining a signal-to-interference-plus-noise ratio (SINR) associated with receiving the plurality of encoded packets, receiving an indication from the transmitting device, or determining a channel quality indicator (CQI) or a modulation and coding scheme (MCS) associated with receiving the plurality of encoded packets. The method further includes adaptively determining a PHY packet error rate associated with the plurality of encoded packets based on the SINR, the indication, the CQI, or the MCS. Other aspects and features are also claimed and described.

    PORT SELECTION CODEBOOK ENHANCEMENTS FOR SPATIAL AND FREQUENCY DOMAIN DENSITY RECIPROCITY
    25.
    发明公开
    PORT SELECTION CODEBOOK ENHANCEMENTS FOR SPATIAL AND FREQUENCY DOMAIN DENSITY RECIPROCITY 审中-公开

    公开(公告)号：US20230170963A1

    公开(公告)日：2023-06-01

    申请号：US18005939

    申请日：2020-09-09

    Applicant: QUALCOMM Incorporated

    Inventor： Liangming Wu ,  Chenxi Hao ,  Yu Zhang ,  Kangqi Liu ,  Min Huang ,  Rui Hu ,  Qiaoyu Li ,  Chao Wei ,  Hao Xu ,  Wanshi Chen

    IPC: H04B7/06 ,  H04W72/23

    CPC classification number: H04B7/0626 ,  H04W72/23

    Abstract: Port selection codebook enhancements are disclosed for spatial and frequency domain density (FDD) reciprocity. A base station may generate and signal a channel state information (CSI) report configuration including configuration of multiple CSI-reference signal (CSI-RS) port groups, wherein each group includes one or more CSI-RS ports, and each group is associated with one or more codebook subset restrictions (CBSRs). Using the configured restrictions of the CBSRs, served user equipments (UEs) may determine linear combination coefficient feedback based on channel measurements of selected port groups and signals the feedback to the base station. Once the base station receives the feedback it may then determine a hybrid CSI-RS codebook using both the configured CSI-RS port groups and the linear combination coefficients. The base station may then transmit downlink data encoded with a precoding matrix selected from the codebook. Other aspects and features are also claimed and described.

    Polar coded hybrid automatic repeat request (HARQ) with incremental channel polarization
    29.
    发明授权
    Polar coded hybrid automatic repeat request (HARQ) with incremental channel polarization 有权

    公开(公告)号：US11387939B2

    公开(公告)日：2022-07-12

    申请号：US15733499

    申请日：2019-01-17

    Applicant: QUALCOMM Incorporated

    Inventor： Kai Chen ,  Liangming Wu ,  Changlong Xu ,  Jian Li ,  Hao Xu

    IPC: H04L1/00 ,  H04L1/18

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may perform a first polar code encoding process on a first transmission of a hybrid automatic repeat request (HARQ) process; generate a second transmission of the HARQ process by relocating a portion of bits in less reliable positions of the first transmission to more reliable positions of the second transmission of the HARQ process, wherein the less reliable positions and the more reliable positions are evaluated based at least in part on a channel transform, wherein the channel transform is based at least in part on the first transmission, the second transmission, the first polar encoding process and a second polar encoding process associated with the second transmission; and transmit the second transmission of the HARQ process. Numerous other aspects are provided.

    Codebook subset restriction design for MIMO
    30.
    发明授权
    Codebook subset restriction design for MIMO 有权

    公开(公告)号：US11381289B2

    公开(公告)日：2022-07-05

    申请号：US16640150

    申请日：2018-09-11

    Applicant: QUALCOMM Incorporated

    Inventor： Liangming Wu ,  Yu Zhang ,  Chenxi Hao ,  Chao Wei ,  Wanshi Chen ,  Hao Xu

    IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/06

    Abstract: Aspects of the present disclosure relate to techniques for codebook subset restriction (CSR). In some cases, a user equipment (UE) receives, from a network entity, codebook subset restriction (CSR) information. The UE determines, based on the CSR information, a restricted beam set for a plurality of antenna panels, determines precoding matrix indicator (PMI) feedback for the antenna panels subject to restricted beam set, and provides the PMI feedback to the network entity.

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