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92 条记录 (耗时 0.026 秒)

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING MEASUREMENT AND REPORTING
    31.
    发明公开
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING MEASUREMENT AND REPORTING 审中-公开

    公开(公告)号：US20240129166A1

    公开(公告)日：2024-04-18

    申请号：US18395533

    申请日：2023-12-23

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

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

    IPC分类号： H04L25/02

    CPC分类号： H04L25/0226 ,  H04L25/0204

    摘要： 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
    32.
    发明公开
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING MEASUREMENT AND REPORTING 审中-公开

    公开(公告)号：US20240125915A1

    公开(公告)日：2024-04-18

    申请号：US18395537

    申请日：2023-12-23

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

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

    IPC分类号： G01S13/74 ,  H04W4/38

    CPC分类号： G01S13/74 ,  H04W4/38 ,  G01S7/006

    摘要： 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 radio based sleep tracking
    35.
    发明授权
    Method, apparatus, and system for radio based sleep tracking 有权

    公开(公告)号：US11771366B2

    公开(公告)日：2023-10-03

    申请号：US17888429

    申请日：2022-08-15

    申请人： Chenshu Wu ,  Beibei Wang ,  Oscar Chi-Lim Au ,  Hung-Quoc Duc Lai ,  K. J. Ray Liu

    发明人： Chenshu Wu ,  Beibei Wang ,  Oscar Chi-Lim Au ,  Hung-Quoc Duc Lai ,  K. J. Ray Liu

    IPC分类号： A61B5/00 ,  A61B5/11 ,  A61B5/0507

    CPC分类号： A61B5/4809 ,  A61B5/0507 ,  A61B5/1116 ,  A61B5/7264

    摘要： Methods, apparatus and systems for radio-based sleep tracking are described. In one example, a described system comprises: a transmitter configured to transmit a first wireless signal through a wireless multipath channel in a venue; a receiver configured to receive a second wireless signal through the wireless multipath channel, wherein the second wireless signal differs from the first wireless signal due to the wireless multipath channel which is impacted by a sleeping motion of an object in the venue; and a processor. The processor is configured for: obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, wherein each channel information (CI) of the TSCI comprises N1 components, wherein N1 is a positive integer larger than one, computing N1 component-wise analytics each associated with one of the N1 components of the TSCI, identifying N2 largest component-wise analytics among the N1 component-wise analytics, wherein N2 is a positive integer less than N1, computing at least one first motion statistics based on the N2 largest component-wise analytics of the TSCI, and monitoring the sleeping motion of the object based on the at least one first motion statistics.

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS VITAL MONITORING USING HIGH FREQUENCY SIGNALS
    37.
    发明申请
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS VITAL MONITORING USING HIGH FREQUENCY SIGNALS 有权

    公开(公告)号：US20230081472A1

    公开(公告)日：2023-03-16

    申请号：US17945995

    申请日：2022-09-15

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

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

    IPC分类号： A61B5/00

    摘要： 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 writing tracking
    38.
    发明授权
    Method, apparatus, and system for wireless writing tracking 有权

    公开(公告)号：US11592913B2

    公开(公告)日：2023-02-28

    申请号：US17180763

    申请日：2021-02-20

    申请人： Sai Deepika Regani ,  Chenshu Wu ,  Beibei Wang ,  Min Wu ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    发明人： Sai Deepika Regani ,  Chenshu Wu ,  Beibei Wang ,  Min Wu ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    IPC分类号： G06F3/038 ,  G06F3/0354 ,  H04W4/029

    摘要： Methods, apparatus and systems for wireless writing tracking are described. In one example, a described system comprises: a transmitter configured for transmitting a first wireless signal through a wireless multipath channel of a venue; a receiver configured for receiving a second wireless signal through the wireless multipath channel; and a processor. The second wireless signal comprises a reflection of the first wireless signal by a tip of a writing instrument in the venue. The processor is configured for: obtaining a time series of channel information (CI) of the wireless multipath channel based on the second wireless signal, wherein each CI comprises at least one of: a channel state information (CSI), channel impulse response (CIR), channel frequency response (CFR), or received signal strength index (RSSI); and tracking a movement of the tip of the writing instrument based on the time series of CI (TSCI).

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING BASED ON CHANNEL INFORMATION
    40.
    发明申请
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING BASED ON CHANNEL INFORMATION 有权

    公开(公告)号：US20220308195A1

    公开(公告)日：2022-09-29

    申请号：US17838228

    申请日：2022-06-12

    申请人： Xiaolu Zeng ,  Beibei Wang ,  Chenshu Wu ,  Sai Deepika Regani ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    发明人： Xiaolu Zeng ,  Beibei Wang ,  Chenshu Wu ,  Sai Deepika Regani ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    IPC分类号： G01S13/00 ,  G01S13/56

    摘要： Methods, apparatus and systems for wireless sensing based on channel information are described. In one example, a described system comprises: a transmitter configured to transmit a wireless signal through a wireless multipath channel of a venue, wherein the wireless multipath channel is impacted by a motion of an object in the venue; a receiver configured to receive 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 and the motion of the object; and a processor. The processor is configured for: obtaining N1 time series of channel information (TSCI) of the wireless multipath channel based on the received wireless signal, computing N4 selected projections based on the N1 TSCI, and performing a sensing task associated with the motion of the object based on the N4 selected projections. N4 is a positive integer. N1=N2*N3. N2 is a quantity of transmit antennas on the transmitter. N3 is a quantity of receive antennas on the receiver. Each TSCI is associated with a respective transmit antenna of the transmitter and a respective receive antenna of the receiver.