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    Channel state information feedback in full-duplex
    101.
    发明授权
    Channel state information feedback in full-duplex 有权

    公开(公告)号：US12155437B2

    公开(公告)日：2024-11-26

    申请号：US17595106

    申请日：2020-05-18

    Applicant: QUALCOMM Incorporated

    Inventor： Min Huang ,  Chao Wei ,  Yu Zhang ,  Qiaoyu Li ,  Liangming Wu

    IPC: H04W24/10 ,  H04B7/06 ,  H04L5/00 ,  H04W24/02 ,  H04W72/23 ,  H04B7/0452

    Abstract: Certain aspects of the present disclosure provide techniques for a user equipment (UE) to determine channel state information (CSI) to feedback to a base station (BS) in a full-duplex wireless communications system while considering UE-to-UE interference and for the BS to configure the UE to provide the CSI to the BS. In an exemplary method, a UE receives, from a base station (BS) in a full-duplex communications system, a channel state information (CSI) report configuration including at least a first indicator of a first associated set of sounding reference signal (SRS) resources; and transmits to the BS a CSI report including CSI and zero or more second indicators of sets of measured SRS resources.

    Inter-stream interference measurement for non-linear precoding techniques
    102.
    发明授权
    Inter-stream interference measurement for non-linear precoding techniques 有权

    公开(公告)号：US12126418B2

    公开(公告)日：2024-10-22

    申请号：US18002797

    申请日：2020-09-02

    Applicant: QUALCOMM Incorporated

    Inventor： Min Huang ,  Chao Wei ,  Hao Xu

    IPC: H04B7/06 ,  H04B7/0456 ,  H04L25/02 ,  H04L27/26

    CPC classification number: H04B7/0632 ,  H04B7/0456 ,  H04B7/0626 ,  H04L25/0228 ,  H04L27/261 ,  H04L27/2691

    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a base station may configure multiple types of resources at a user equipment (UE) for interference management processing at the UE in examples in which the base station employs a non-linear precoding technique. The multiple types of resources configured by the base station may include a first resource type configured for measuring channel gain at the UE, a second resource type configured for measuring non-linear interference at the UE arising from lower-layer data streams, and a third resource type configured for measuring linear interference at the UE arising from higher-layer data streams. The base station may transmit one or more reference signals to the UE over each of the multiple resource types and the UE may determine both a non-linear interference measurement and a linear interference measurement based on receiving the reference signals.

    Feedback for type II channel state information
    105.
    发明授权
    Feedback for type II channel state information 有权

    公开(公告)号：US12047989B2

    公开(公告)日：2024-07-23

    申请号：US17309580

    申请日：2020-01-09

    Applicant: QUALCOMM Incorporated

    Inventor： Chao Wei ,  Chenxi Hao ,  Liangming Wu ,  Qiaoyu Li ,  Min Huang

    IPC: H04W72/542 ,  H04B7/0417 ,  H04B7/0456 ,  H04W72/21

    CPC classification number: H04W72/542 ,  H04B7/0417 ,  H04B7/0486 ,  H04W72/21

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may perform channel state information (CSI) measurements on one or more reference signal transmissions from a base station; determine, based at least in part on the CSI measurements, a set of non-zero linear combination complex coefficients for weighting and co-phasing for a linear combination of a plurality of frequency domain basis vectors and a plurality of spatial domain basis vectors; and transmit a CSI feedback, wherein a first part of the CSI feedback includes at least an indication of a number of the set of non-zero linear combination complex coefficients with regard to all layers of a communication link between the UE and the base station. Numerous other aspects are provided.

    Scalable process for indicating beam selection
    108.
    发明授权
    Scalable process for indicating beam selection 有权

    公开(公告)号：US12003307B2

    公开(公告)日：2024-06-04

    申请号：US17744373

    申请日：2022-05-13

    Applicant: QUALCOMM Incorporated

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

    IPC: H04B7/06 ,  H04B7/0456

    CPC classification number: H04B7/0695 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0626

    Abstract: Methods, systems, and devices for wireless communication are described. In wireless systems supporting multiple-input, multiple-output (MIMO) transmissions, devices may implement beam-forming to improve reliability of communications. A user equipment (UE) may select a set of beams, and corresponding beam indices, for communication based on reference signals received from a base station. The UE may determine values corresponding to each of the beam indices using a scalable set of tables. For example, the UE may select a subset of the tables based on the number of selected beams, and may determine the values based on these tables. In this way, the UE may efficiently store sets of tables for multiple different configurations. The UE may sum the corresponding values to obtain a combination index value, and may transmit the combination index value to the base station. The base station may determine the selected beams based on this combination index value.

    Basis subset feedback for channel state information enhancement
    109.
    发明授权
    Basis subset feedback for channel state information enhancement 有权

    公开(公告)号：US12003298B2

    公开(公告)日：2024-06-04

    申请号：US17296608

    申请日：2019-12-06

    Applicant: Qualcomm Incorporated

    Inventor： Chao Wei ,  Liangming Wu ,  Chenxi Hao ,  Qiaoyu Li ,  Min Huang

    IPC: H04W72/04 ,  H04B7/06 ,  H04W28/06

    CPC classification number: H04B7/0626 ,  H04B7/0634 ,  H04W28/06

    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may report basis subset selection for a set of beams, where the basis vectors are used for frequency domain compression. To reduce reporting overhead, the UE may transmit two reports indicating the basis vectors. The first report may include first information for the basis vectors and is of a known payload size to both the UE and a base station, while the second report may include second information for the basis vectors and may have a payload size dependent on the first information. The base station may decode the first report and may use the decoded first information to decode the second report. Based on the first and second information, the base station may determine the reported set of basis vectors to use for frequency domain compression and may determine non-zero precoding coefficients.

    Beamforming for multi-aperture orbital angular momentum multiplexing based communication
    110.
    发明授权
    Beamforming for multi-aperture orbital angular momentum multiplexing based communication 有权

    公开(公告)号：US12003296B2

    公开(公告)日：2024-06-04

    申请号：US17997213

    申请日：2020-07-01

    Applicant: QUALCOMM Incorporated

    Inventor： Min Huang ,  Chao Wei ,  Hao Xu

    IPC: H04B7/06

    CPC classification number: H04B7/0617 ,  H04B7/0695

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver of orbital angular momentum (OAM) multiplexing based communication may receive, from a transmitter of the OAM multiplexing based communication, a plurality of reference signals corresponding to a plurality of aperture pairs, wherein a reference signal of the plurality of reference signals corresponds to an OAM mode of a corresponding aperture pair; transmit, to the transmitter, a feedback message comprising beamforming information based at least in part on the plurality of reference signals; and receive, from the transmitter, a plurality of data streams that are beamformed based at least in part on the beamforming information. Numerous other aspects are provided.

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