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    WIRELESS SENSING USING CLASSIFIER PROBING AND REFINEMENT
    1.
    发明申请
    WIRELESS SENSING USING CLASSIFIER PROBING AND REFINEMENT 有权

    公开(公告)号：US20250124110A1

    公开(公告)日：2025-04-17

    申请号：US18991632

    申请日：2024-12-22

    Applicant: Sai Deepika Regani ,  Beibei Wang ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    Inventor： Sai Deepika Regani ,  Beibei Wang ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    IPC: G06F18/241

    Abstract: Wireless sensing using classifier probing and refinement is described. In one example, a described method comprises: computing output analytics by a classifier based on input data constructed based on raw measurement data; mapping each output analytics to a respective mapped outcome; identifying at least one reference input data each associated with a reference output analytics and a reference mapped outcome; each reference input data being one of the input data for the classifier for which a respective reference outcome is available and is different from the reference mapped outcome; and for each reference input data for the classifier: computing a respective plurality of perturbed output analytics by the classifier, generating selected perturbed input data based on the plurality of perturbed output analytics; and re-training the classifier based on the selected perturbed input data and the associated reference outcome.

    Method, apparatus, and system for wireless sensing based on linkwise motion statistics
    3.
    发明授权
    Method, apparatus, and system for wireless sensing based on linkwise motion statistics 有权

    公开(公告)号：US12216190B2

    公开(公告)日：2025-02-04

    申请号：US17838244

    申请日：2022-06-12

    Applicant: Yuqian Hu ,  Beibei Wang ,  Sai Deepika Regani ,  Peng Zan ,  Chenshu Wu ,  Dan Bugos ,  Xiaolu Zeng ,  Hung-Quoc Duc Lai ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    Inventor： Yuqian Hu ,  Beibei Wang ,  Sai Deepika Regani ,  Peng Zan ,  Chenshu Wu ,  Dan Bugos ,  Xiaolu Zeng ,  Hung-Quoc Duc Lai ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    IPC: G01S13/00 ,  G01S13/56

    Abstract: Methods, apparatus and systems for wireless sensing based on linkwise motion statistics (link-MS) are described. In one example, a described method comprises: determining a plurality of heterogeneous wireless devices of a wireless sensing system in a venue; determining a plurality of device-links each of comprises two of the heterogeneous wireless devices, one functioning as a transmitter and the other functioning as a receiver; for each respective device-link of the plurality of device-links, transmitting a respective wireless signal from a respective transmitter of the respective device-link through a wireless multipath channel of the venue, wherein the wireless multipath channel is impacted by a motion of an object in the venue, receiving the respective wireless signal by a respective receiver of the respective device-link through the wireless multipath channel, wherein the respective received wireless signal differs from the respective transmitted wireless signal due to the wireless multipath channel of the venue and the motion of the object, obtaining a respective time series of channel information (TSCI) of the wireless multipath channel based on the respective received wireless signal of the respective device-link, computing a respective link-MS for the respective device-link based on the respective TSCI; performing a sensing task associated with the motion of the object based on at least one of: all the TSCI or all the link-MS; and computing a location in the venue associated with the sensing task based on all the link-MS.

    Method, apparatus, and system for wireless vital monitoring using high frequency signals
    7.
    发明授权
    Method, apparatus, and system for wireless vital monitoring using high frequency signals 有权

    公开(公告)号：US12004838B2

    公开(公告)日：2024-06-11

    申请号：US17945995

    申请日：2022-09-15

    Applicant: Fengyu Wang ,  Beibei Wang ,  Xiaolu Zeng ,  Chenshu Wu ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    Inventor： Fengyu Wang ,  Beibei Wang ,  Xiaolu Zeng ,  Chenshu Wu ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    IPC: A61B5/00 ,  A61B5/024 ,  A61B5/0507 ,  G01S13/88

    CPC classification number: A61B5/0015 ,  A61B5/0026 ,  A61B5/02405 ,  A61B5/0507 ,  A61B5/7207 ,  G01S13/88

    Abstract: Methods, apparatus and systems for wireless vital sign monitoring are described. In one example, a described system comprises: a transmitter configured to transmit a wireless signal through a wireless channel of a venue; a receiver configured to receive the wireless signal through the wireless channel that is being impacted by an object motion of an object in the venue; and a processor. At least one of the transmitter or the receiver comprises an array of antennas used to transmit or receive the wireless signal. The object motion comprises at least one non-periodic body motion of the object and at least one periodic vital-sign motion of the object. The processor is configured for: segmenting space around the venue into a plurality of sectors based on a beamforming and the received wireless signal, wherein each sector of the plurality of sectors is associated with a spatial direction relative to the array of antennas, obtaining a plurality of time series of channel information (CI) of the wireless channel based on the beamforming, wherein each time series of CI (TSCI) of the plurality of TSCI is associated with a respective sector of the plurality of sectors, isolating the object motion of the object in the plurality of TSCI to generate a plurality of isolated TSCI, compensating for the at least one non-periodic body motion of the object in the plurality of isolated TSCI to generate a plurality of compensated TSCI, and monitoring the at least one periodic vital-sign motion of the object based on the plurality of compensated TSCI.

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING MEASUREMENT AND REPORTING
    8.
    发明公开
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING MEASUREMENT AND REPORTING 审中-公开

    公开(公告)号：US20240183936A1

    公开(公告)日：2024-06-06

    申请号：US18395539

    申请日：2023-12-23

    Applicant: Oscar Chi-Lim Au ,  Beibei Wang ,  K. J. Ray Liu ,  Hung-Quoc Duc Lai

    Inventor： Oscar Chi-Lim Au ,  Beibei Wang ,  K. J. Ray Liu ,  Hung-Quoc Duc Lai

    IPC: G01S7/00 ,  G01S13/00 ,  H04L67/12 ,  H04L67/147 ,  H04W84/12

    CPC classification number: G01S7/006 ,  G01S13/003 ,  H04L67/12 ,  H04L67/147 ,  H04W84/12

    Abstract: Methods, apparatus and systems for wireless sensing are described. In one example, a described system in a wireless data communication network comprises: a transmitter configured to transmit a time series of at least one wireless sounding signal (WSS) based on a standard wireless network protocol associated with the wireless data communication network, and a receiver. The wireless data communication network comprises a physical (PHY) layer, a medium access control (MAC) layer, and at least one higher layer. The receiver is configured to: receive the time series of at least one WSS (TSWSS) based on the standard wireless network protocol through a wireless channel of a venue, and perform a plurality of wireless sensing measurements based on the received TSWSS to obtain sensing measurement results based on the standard wireless network protocol. The PHY layer or the MAC layer of the receiver provides the sensing measurement results locally to the at least one higher layer of the receiver based on the standard wireless network protocol. The sensing measurement results are available to the at least one higher layer of the receiver for performing a sensing-based task based on the sensing measurement results.

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING MEASUREMENT AND REPORTING
    9.
    发明公开
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING MEASUREMENT AND REPORTING 审中-公开

    公开(公告)号：US20240129778A1

    公开(公告)日：2024-04-18

    申请号：US18395543

    申请日：2023-12-23

    Applicant: Oscar Chi-Lim Au ,  Beibei Wang ,  K. J. Ray Liu ,  Hung-Quoc Duc Lai

    Inventor： Oscar Chi-Lim Au ,  Beibei Wang ,  K. J. Ray Liu ,  Hung-Quoc Duc Lai

    IPC: H04W24/10

    CPC classification number: H04W24/10 ,  H04W88/182

    Abstract: Methods, apparatus and systems for wireless sensing are described. In one example, a described system in a wireless data communication network comprises: a transmitter configured to transmit a time series of at least one wireless sounding signal (WSS) based on a standard wireless network protocol associated with the wireless data communication network, and a receiver. The wireless data communication network comprises a physical (PHY) layer, a medium access control (MAC) layer, and at least one higher layer. The receiver is configured to: receive the time series of at least one WSS (TSWSS) based on the standard wireless network protocol through a wireless channel of a venue, and perform a plurality of wireless sensing measurements based on the received TSWSS to obtain sensing measurement results based on the standard wireless network protocol. The PHY layer or the MAC layer of the receiver provides the sensing measurement results locally to the at least one higher layer of the receiver based on the standard wireless network protocol. The sensing measurement results are available to the at least one higher layer of the receiver for performing a sensing-based task based on the sensing measurement results.

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS HUMAN AND NON-HUMAN MOTION DETECTION
    10.
    发明公开
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS HUMAN AND NON-HUMAN MOTION DETECTION 审中-公开

    公开(公告)号：US20240125888A1

    公开(公告)日：2024-04-18

    申请号：US18391529

    申请日：2023-12-20

    Applicant: Guozhen Zhu ,  Beibei Wang ,  Yuqian Hu ,  Chenshu Wu ,  Xiaolu Zeng ,  K.J. Ray Liu ,  Oscar Chi-Lim Au

    Inventor： Guozhen Zhu ,  Beibei Wang ,  Yuqian Hu ,  Chenshu Wu ,  Xiaolu Zeng ,  K.J. Ray Liu ,  Oscar Chi-Lim Au

    IPC: G01S5/02

    CPC classification number: G01S5/0273 ,  G01S5/0278

    Abstract: Methods, apparatus and systems for wireless human-nonhuman motion detection are described. For example, a described method comprises: transmitting a wireless signal through a wireless multipath channel of a venue; receiving the wireless signal through the wireless multipath channel, wherein the received wireless signal differs from the transmitted wireless signal due to the wireless multipath channel that is impacted by a motion of an object in the venue; obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the received wireless signal; computing an autocorrelation function (ACF) based on the TSCI; computing at least one ACF feature of the ACF or a function of the ACF; computing an ACF statistics, a motion statistics, a speed statistics, and a gait statistics based on the at least one ACF feature of the ACF or the function of the ACF; and in response to a determination that the motion is detected, classifying the object associated with the detected motion as a human or a non-human, based on: the ACF statistics, the motion statistics, the speed statistics, and the gait statistics.

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