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公开(公告)号：US20220299619A1
公开(公告)日：2022-09-22
申请号：US17838244
申请日：2022-06-12
申请人： 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
发明人： 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
摘要： 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.
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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
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.
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公开(公告)号：US20210311166A1
公开(公告)日：2021-10-07
申请号：US17352185
申请日：2021-06-18
申请人： Chenshu Wu , Beibei Wang , Peng Zan , Sai Deepika Regani , Xiaolu Zeng , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Chenshu Wu , Beibei Wang , Peng Zan , Sai Deepika Regani , Xiaolu Zeng , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
摘要： Methods, apparatus and systems for wirelessly monitoring a micro motion of an object 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 differs from the first wireless signal due to the wireless multipath channel and a motion of an object in the venue. 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 CI components; selecting N2 CI components from the N1 CI components based on a first analysis of the N1 CI components; computing a micro-motion (MM) statistics based on the N2 selected CI components and the first analysis; monitoring the motion of the object based on a second analysis of the MM statistics; performing a task based on the first analysis and the second analysis; and generating a response based on the task, the first analysis and the second analysis.
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公开(公告)号：US20210232235A1
公开(公告)日：2021-07-29
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 , H04W4/029 , G06F3/0354
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).
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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).
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公开(公告)号：US20210173046A1
公开(公告)日：2021-06-10
申请号：US17180766
申请日：2021-02-20
申请人： Sai Deepika Regani , Beibei Wang , Min Wu , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Sai Deepika Regani , Beibei Wang , Min Wu , K. J. Ray Liu , Oscar Chi-Lim Au
摘要： Methods, apparatus and systems for wireless motion recognition 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 differs from the first wireless signal due to the wireless multipath channel that is impacted by a motion of an object in the venue. The processor is configured for: obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, tracking the motion of the object based on the TSCI to generate a gesture trajectory of the object, and determining a gesture shape based on the gesture trajectory and a plurality of pre-determined gesture shapes.
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7.发明申请公开(公告)号：US20220091231A1
公开(公告)日：2022-03-24
申请号：US17539058
申请日：2021-11-30
申请人： Sai Deepika Regani , Qinyi Xu , Beibei Wang , Min Wu , Oscar Chi-Lim Au , K. J. Ray Liu
发明人： Sai Deepika Regani , Qinyi Xu , Beibei Wang , Min Wu , Oscar Chi-Lim Au , K. J. Ray Liu
摘要： Methods, apparatus and systems for monitoring an object expression are described. In one example, a described apparatus in a venue comprises a receiver and a processor. The receiver is configured for: receiving a wireless signal from a transmitter through a wireless multipath channel that is impacted by an expression of an object in the venue, wherein the object has at least one movable part and is expressed in the expression with respect to a setup in the venue; and obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the wireless signal received by the receiver. The processor is configured for computing information associated with the object based at least partially on the TSCI obtained when the object is expressed in the expression, and performing, based on the information associated with the object, a task associated with at least one of the object and the venue.
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