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    TIMING MIS-MATCH CALIBRATION IN DISTRIBUTED MIMO
    21.
    发明公开
    TIMING MIS-MATCH CALIBRATION IN DISTRIBUTED MIMO 审中-公开

    公开(公告)号：US20240171349A1

    公开(公告)日：2024-05-23

    申请号：US18482803

    申请日：2023-10-06

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： R A Nadisanka Perera Rupasinghe ,  Yang Li ,  Gilwon Lee ,  Jianzhong Zhang

    IPC: H04L5/00 ,  H04B7/06 ,  H04W72/0457

    CPC classification number: H04L5/0051 ,  H04B7/0617 ,  H04B7/0626 ,  H04W72/0457

    Abstract: A method of operating a network includes receiving an UL RS, estimating UL channels for a plurality of TRPS based on the UL RS, configuring first DL RS resources from an upper portion of a BWP, transmitting via the plurality of TRPs, a first beamformed DL RS from the upper portion of the BWP, and receiving via one or more of the plurality of TRPs, first CSI feedback based on the first DL RS. The method further includes configuring second DL RS resources from a lower portion of the BWP, transmitting via the plurality of TRPs, a second beamformed DL RS from the lower portion of the BWP, receiving via one or more of the plurality of TRPs, second CSI feedback based on the second DL RS, and determining a timing mis-match between the plurality of TRPs based on the first CSI feedback and the second CSI feedback.

    CODEBOOK FOR AI-ASSISTED CHANNEL ESTIMATION
    22.
    发明公开
    CODEBOOK FOR AI-ASSISTED CHANNEL ESTIMATION 审中-公开

    公开(公告)号：US20240056138A1

    公开(公告)日：2024-02-15

    申请号：US18365874

    申请日：2023-08-04

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yeqing Hu ,  Xiaowen Tian ,  Yang Li ,  Tiexing Wang ,  Jianzhong Zhang

    IPC: H04B7/0456 ,  H04L25/02

    CPC classification number: H04B7/0456 ,  H04L25/0204 ,  H04L25/0256

    Abstract: A method includes identifying ACF information by: obtaining channel information including multiple channels of expected operation scenarios; and based on the channel information for each of the channels, determining MMSE channel estimation (CE) weights expressed in a form of ACFs and an SNR, and covariance matrices. The method includes clustering the MMSE CE weights into K clusters. A center ACF weight of each of the K clusters represents a codeword. The method includes determining a distance metric based on a cluster distance after a re-clustering. The method includes, in response to a determination that cluster distances before and after the clustering differ from each other by a non-negligibly, iteratively re-clustering the ACF information thereby updating the center ACF weights and cluster distances. The method includes generating the codebook to include an index k of each of the K clusters and the center ACF weight of each of the K clusters.

    MOBILITY CLASSIFICATION AND CHANNEL STATE INFORMATION PREDICTION
    23.
    发明公开
    MOBILITY CLASSIFICATION AND CHANNEL STATE INFORMATION PREDICTION 审中-公开

    公开(公告)号：US20240048203A1

    公开(公告)日：2024-02-08

    申请号：US18348266

    申请日：2023-07-06

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Tiexing Wang ,  Umut Demirhan ,  Yang Li

    IPC: H04B7/06

    CPC classification number: H04B7/0626 ,  H04B7/0639 ,  H04B7/0632 ,  H04B7/0634

    Abstract: Methods and apparatuses for mobility classification and channel state information (CSI) prediction. A method for operating a base station includes receiving, from a user equipment (UE), a channel status state information (CSI) report comprising a precoding matrix indicator (PMI), a channel quality information (CQI), and a rank indicator (RI). The method further includes identifying a CSI configuration of the UE and performing a metric smoothing operation on the PMI. The metric smoothing operation results in a smoothed PMI. The metric smoothing operation comprises a scaling function based on the RI and a discrete Fourier transform (DFT) vector length. The method further includes determining a mobility range classification of the UE based on the smoothed PMI, other metrics in the CSI feedback report, and the CSI configuration.

    LOW COMPLEXITY MACHINE LEARNING BASED CHANNEL CLASSIFIER
    25.
    发明申请
    LOW COMPLEXITY MACHINE LEARNING BASED CHANNEL CLASSIFIER 有权

    公开(公告)号：US20230082795A1

    公开(公告)日：2023-03-16

    申请号：US17932274

    申请日：2022-09-14

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Tiexing Wang ,  Yeqing Hu ,  Yang Li ,  Rui Wang ,  Junmo Sung ,  Jianzhong Zhang

    IPC: H04L5/00 ,  H04L25/02 ,  H04L27/26

    Abstract: A method includes storing multiple signals received from a user equipment (UE) in a queue. The method also includes estimating a sounding reference signal (SRS) signal-to-noise-ratio (SNR) and determining a filtered SNR based on the received signals. The method also includes computing one or more features based on the filtered SNR and at least some of the received signals in the queue. The method also includes determining (i) a channel condition of the UE and (ii) a speed range of the UE based on the one or more computed features, wherein the channel condition of the UE comprises line-of-sight (LoS) or non-line-of-sight (NLoS). The method also includes determining a transmission configuration based on the channel condition of the UE and the speed range of the UE.

    Control for mobility channel prediction
    26.
    发明授权
    Control for mobility channel prediction 有权

    公开(公告)号：US11516689B2

    公开(公告)日：2022-11-29

    申请号：US17129797

    申请日：2020-12-21

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yeqing Hu ,  Yang Li ,  Tiexing Wang ,  Junmo Sung ,  Rui Wang ,  Jianzhong Zhang

    IPC: H04L12/00 ,  H04W24/10 ,  H04W24/08

    Abstract: A method for operating a base station comprises receiving channel information from a plurality of UEs; determining, based on the channel information, one or more UEs on which to base a channel prediction; computing a first set of metrics and a second set of metrics corresponding to the plurality of UEs, wherein computing the first set of metrics has a lower complexity than computing the second set of metrics; performing a selection process on the plurality of UEs based on the first and second set of metrics associated with the plurality of UEs; selecting a first subset of UEs from the plurality of UEs based on a first set of metrics; selecting, from the first subset, a second subset of UEs based on a second set of metrics; and performing the channel prediction based on the second subset of UEs.

    MULTIPLE ANTENNA CHANNEL TRACKING UNDER PRACTICAL IMPAIRMENT
    27.
    发明申请
    MULTIPLE ANTENNA CHANNEL TRACKING UNDER PRACTICAL IMPAIRMENT 有权

    公开(公告)号：US20220271852A1

    公开(公告)日：2022-08-25

    申请号：US17481048

    申请日：2021-09-21

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yeqing Hu ,  Yang Li ,  Rui Wang ,  Junmo Sung ,  Tiexing Wang ,  Jianzhong Zhang

    IPC: H04B17/391

    Abstract: Methods and apparatuses for a BS in a communication system. The method comprises: identifying antenna groups; identifying channel coefficients for each of the antenna groups to perform a channel tracking and prediction operation; receiving, from a user equipment (UE), an uplink signal to perform the channel tracking and prediction operation; and performing, based at least in part on the received uplink signal, a channel coefficient tracking operation for the channel coefficients of the antenna groups, respectively, the channel coefficient tracking operation including a channel subspace parameter tracking operation and a subspace coefficient tracking operation.

    Method and apparatus for transmitting and receiving reference signals in wireless communication
    28.
    发明授权
    Method and apparatus for transmitting and receiving reference signals in wireless communication 有权

    公开(公告)号：US11038557B2

    公开(公告)日：2021-06-15

    申请号：US15472212

    申请日：2017-03-28

    Applicant: Samsung Electronics Co., Ltd

    Inventor： Young-Han Nam ,  Boon Loong Ng ,  Yang Li ,  Sudhir Ramakrishna ,  Md. Saifur Rahman

    IPC: H04B7/024 ,  H04B7/06 ,  H04L5/00

    Abstract: A base station includes a controller configured to configure an MRS resource set comprising a group of MRS resources, each MRS resource comprising a set of MRS antenna ports. If at least two MRS antenna ports belong to a same MRS resource, then the at least two MRS antenna ports are quasi co-located with respect to a first set of QCL parameters, else if the at least two MRS antenna ports belong to a same MRS resource set, then the at least two MRS antenna ports are quasi co-located with respect to a second set of QCL parameters, and else the at least two MRS antenna ports are not quasi co-located with respect to either the first set or the second set of QCL parameters. The MRS is a CSI-RS for estimating a CSI and at least one of the first set and the second set of QCL parameters.

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