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公开(公告)号：US11012285B2
公开(公告)日：2021-05-18
申请号：US16127151
申请日：2018-09-10
申请人： Chen Chen , Beibei Wang , Yi Han , Feng Zhang , Hung-Quoc Duc Lai , Yan Chen , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Chen Chen , Beibei Wang , Yi Han , Feng Zhang , Hung-Quoc Duc Lai , Yan Chen , K. J. Ray Liu , Oscar Chi-Lim Au
摘要： The present teaching relates to vital sign detection and monitoring based on channel state information (CSI). In one example, an apparatus for vital sign detection is disclosed. The apparatus comprises a receiver, a processor and a memory communicatively coupled with the processor. The receiver is configured for receiving at least one wireless signal from a multipath channel that can be impacted by a vital sign of at least one living being. The processor is configured for: extracting a time series of channel state information (CSI) for the multipath channel from the at least one wireless signal, obtaining one or more periodic fluctuations based on a spectral analysis of the time series of CSI, and determining whether the vital sign is present based on the one or more periodic fluctuations.
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公开(公告)号：US20210091866A1
公开(公告)日：2021-03-25
申请号：US17113023
申请日：2020-12-05
申请人： Feng Zhang , Beibei Wang , Hung-Quoc Duc Lai , Oscar Chi-Lim Au , K. J. Ray Liu
发明人： Feng Zhang , Beibei Wang , Hung-Quoc Duc Lai , Oscar Chi-Lim Au , K. J. Ray Liu
IPC分类号： H04B17/309
摘要： Methods, apparatus and systems for improving accuracy and efficiency of wireless monitoring are described. In one example, a described method comprises: transmitting a first wireless signal from a first wireless device with transmit antennas through a wireless multipath channel of a venue; receiving a second wireless signal by a second wireless device with receive antennas through the wireless multipath channel, wherein 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; obtaining a number of time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, wherein each TSCI is associated with a respective one of the transmit antennas and a respective one of the receive antennas; preprocessing the number of TSCI; and monitoring the motion of the object based on the number of preprocessed TSCI.
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公开(公告)号：US20210136515A1
公开(公告)日：2021-05-06
申请号：US17149625
申请日：2021-01-14
申请人： Feng Zhang , Beibei Wang , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Feng Zhang , Beibei Wang , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
IPC分类号： H04W4/021 , H04B17/309 , H04W4/02
摘要： Methods, apparatus and systems for wireless monitoring for motion detection and localization are described. In one example, a described system comprises: Type 1 devices; Type 2 devices; and a processor. Each Type 2 device is configured for: asynchronously receiving, from each of a respective subset of Type 1 devices associated with the Type 2 device, a respective wireless signal through a respective wireless multipath channel impacted by a motion of an object in a venue; asynchronously receiving, from each of a subset of a respective set of at least one other Type 2 device interconnected wirelessly with the Type 2 device, a respective wireless signal through a respective wireless multipath channel impacted by the motion of the object; and obtaining a set of asynchronous time series of channel information (ATSCI), wherein each ATSCI is associated with a respective wireless multipath channel and is obtained based on the asynchronously received respective wireless signal. The processor is configured for monitoring the motion of the object based on the set of ATSCI associated with each Type 2 device.
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公开(公告)号：US11035940B2
公开(公告)日：2021-06-15
申请号：US16667648
申请日：2019-10-29
申请人： Qinyi Xu , Yi Han , Hung-Quoc Duc Lai , Beibei Wang , Oscar Chi-Lim Au , K. J. Ray Liu
发明人： Qinyi Xu , Yi Han , Hung-Quoc Duc Lai , Beibei Wang , Oscar Chi-Lim Au , K. J. Ray Liu
摘要： Methods, apparatus and systems for monitoring a presence or a motion of an object in a proximity of an apparatus are described. In one example, a described apparatus is in a venue for wireless proximity monitoring. The apparatus comprises: a transmitter, a receiver, and a processor. The transmitter is configured for transmitting a wireless signal through a wireless multipath channel, wherein the wireless multipath channel is impacted by a motion of an object within a proximity of the apparatus. The receiver is configured for: receiving the wireless signal through the wireless multipath channel between the transmitter and the receiver, 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 monitoring the motion of the object within the proximity of the apparatus based at least partially on the TSCI.
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公开(公告)号：US11025475B2
公开(公告)日：2021-06-01
申请号：US15861422
申请日：2018-01-03
申请人： K. J. Ray Liu , Hung-Quoc Duc Lai , Beibei Wang , Chen Chen , Oscar Chi-Lim Au
发明人： K. J. Ray Liu , Hung-Quoc Duc Lai , Beibei Wang , Chen Chen , Oscar Chi-Lim Au
摘要： The present teaching relates to collecting and processing location-specific wireless waveforms for use in wireless communication, components, methods, apparatuses, servers, and systems. In one embodiment, a disclosed system comprises a first wireless transceiver of a first device, and at least one second wireless transceiver of at least one second device. The first wireless transceiver of the first device is wirelessly coupled to the at least one second wireless transceiver through a wireless multipath channel associated with a space. The first device with the first wireless transceiver comprises a processor and a memory, which are configured to obtain a set of channel information (CI) and perform a task associated with the space based on the set of channel information. The set of channel information is captured when at least one probing signal is either (1) sent from the first wireless transceiver to a particular second wireless transceiver through the wireless multipath channel associated with the space, or (2) sent from the particular second wireless transceiver to the first wireless transceiver through the wireless multipath channel. The set of CI comprises a channel impulse response, a channel frequency response, a channel profile, and/or another channel data of the wireless multipath channel.
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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：US20210311162A1
公开(公告)日：2021-10-07
申请号：US17352306
申请日：2021-06-20
申请人： Chao-Lun Mai , Dan Bugos , Hung-Quoc Duc Lai , Spencer Maid , Beibei Wang , Oscar Chi-Lim Au , K. J. Ray Liu
发明人： Chao-Lun Mai , Dan Bugos , Hung-Quoc Duc Lai , Spencer Maid , Beibei Wang , Oscar Chi-Lim Au , K. J. Ray Liu
摘要： Methods, apparatus and systems for wireless motion monitoring to ensure security 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; computing a spatial-temporal information (STI) based on the TSCI; monitoring the motion of the object based on the TSCI and the STI; performing a task based on the monitoring; and generating a response based on the task.
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8.发明申请公开(公告)号：US20220096003A1
公开(公告)日：2022-03-31
申请号：US17537432
申请日：2021-11-29
申请人： Chao-Lun Mai , Jeng-Feng Lee , Hung-Quoc Duc LAI , Dan Bugos , Hangfang Zhang , Beibei Wang , Oscar Chi-Lim Au , K. J. Ray Liu
发明人： Chao-Lun Mai , Jeng-Feng Lee , Hung-Quoc Duc LAI , Dan Bugos , Hangfang Zhang , Beibei Wang , Oscar Chi-Lim Au , K. J. Ray Liu
摘要： Methods, apparatus and systems for wireless monitoring and tracking are described. In one example, a described method of a wireless monitoring system comprises: transmitting a wireless signal that is impacted by a wireless multipath channel in a venue and a modulation of an object undergoing a motion in the venue, to obtain a set of channel information (CI) of the wireless multipath channel; performing a monitoring task by monitoring the object and the motion; determining a plurality of admissible system states of the wireless monitoring system, wherein each admissible system state is associated with a respective setting of at least one of: the wireless signal, a series of sounding signals in the wireless signal, or the monitoring task; choosing one of the admissible system states to be a system state of the wireless monitoring system based on the monitoring task; and applying a setting associated with the chosen admissible system state to the wireless monitoring system.
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9.发明授权公开(公告)号：US11202215B2
公开(公告)日：2021-12-14
申请号：US17113024
申请日：2020-12-05
IPC分类号： H04W24/02
摘要： Methods, apparatus and systems for providing automatic assistance based on wireless monitoring are described. In one example, a described automatic assistant system comprises: a transmitter, a receiver, a processor, and an assistant device. The transmitter is configured for transmitting a first wireless signal through a wireless multipath channel of a venue. The receiver is configured for receiving a second wireless signal through the wireless multipath channel. 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, and monitoring the motion of the object in the venue based on the TSCI. The assistant device is configured for generating an assistance with respect to the object in the venue based on the monitoring.
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公开(公告)号：US20220386945A1
公开(公告)日：2022-12-08
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 , A61B5/0507 , A61B5/11
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.
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