Origin Wireless, Inc.

Origin Research Wireless, Inc.

Yi Han

K J Ray Liu

Hung-Quoc Duc Lai

Beibei Wang

Yan Chen

Oscar Chi-Lim Au

Chen Chen

Feng Zhang

Qinyi Xu

Hang Ma

Zoltan Safar

Zhung-Han Wu

Chau-Wai Wong

Chun-I Chen

Chenshu Wu

Min Wu

Feng Han

Yuqian Hu

Hangfang Zhang

David N Claffey

Sai Deepika Regani

Yu-Han Yang

Muhammed Zahid Ozturk

Jeng-Feng Lee

Xiaolu Zeng

Guozhen Zhu

Masato Marumo

Peng Zan

Meng-Lin Ku

Thomas Nelson Buttermore, Jr

Kj Ray Liu

KJ Ray Liu

Zhang-Han Wu

Methods, apparatus and systems for wireless monitoring with improved accuracy are described. In one example, a described method comprises: transmitting 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; 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 and the motion; obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the received wireless signal; performing a classification of a sliding time window by analyzing channel information (CI) of the TSCI in the sliding time window; computing a motion information (MI) for the sliding time window based on the TSCI and the classification of the sliding time window; and monitoring the motion of the object based on the MI.

Method, apparatus, and system for wireless monitoring with improved accuracy

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.

Method, apparatus, and system for wireless proximity and presence monitoring

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.

Methods, apparatus, servers, and systems for vital signs detection and monitoring

The present teaching relates to wireless Internet of Things. In one example, a time reversal client is disclosed. The time reversal client comprises a processor, a memory communicatively coupled with the processor, and a set of instructions, when executed by the processor based on the memory, that cause the time reversal client to perform the following steps: communicatively coupling with a time reversal server through a network, obtaining a set of channel state information (CSI), wherein the set of CSI is captured when at least one probing signal is sent from the wireless transmitter to the wireless receiver through a wireless multipath channel associated with a space, and causing the set of CSI to be sent to the time reversal server through the network.

Methods, devices, servers, apparatus, and systems for wireless internet of things applications

Methods, apparatus and systems for detecting and monitoring vital signs and other periodic motions of an object are disclosed. In one example, a system for monitoring object motion in a venue is disclosed. The system comprises a transmitter, a receiver, and a vital sign estimator. The transmitter is located at a first position in the venue and configured for transmitting a wireless signal through a wireless multipath channel impacted by a pseudo-periodic motion of an object in the venue. The receiver is located at a second position in the venue and configured for: receiving the wireless signal through the wireless multipath channel impacted by the pseudo-periodic motion of the object in the venue, and obtaining at least one time series of channel information (TSCI) of the wireless multipath channel based on the wireless signal. The vital sign estimator is configured for: determining that at least one portion of the at least one TSCI in a current sliding time window is associated with the pseudo-periodic motion of the object in the venue, and computing a current characteristics related to the pseudo-periodic motion of the object in the current sliding time window based on at least one of: the at least one portion of the at least one TSCI in the current sliding time window, at least one portion of the at least one TSCI in a past sliding time window, and a past characteristics related to the pseudo-periodic motion of the object in the past sliding time window.

Method, apparatus, server and system for vital sign detection and monitoring

Methods, apparatus and systems for detecting and monitoring vital signs in real time are disclosed. In one example, a system for monitoring a repeating motion in a venue is disclosed. The system comprises a transmitter, a receiver, and a repeating motion monitor. The transmitter is located at a first position in the venue and configured for transmitting a wireless signal through a wireless multipath channel impacted by the repeating motion of an object in the venue. The receiver is located at a second position in the venue and configured for: receiving the wireless signal through the wireless multipath channel impacted by the repeating motion of the object in the venue, and obtaining a time series of channel information (CI) of the wireless multipath channel based on the wireless signal. The repeating motion monitor is configured for: monitoring a periodic characteristics of the repeating motion of the object based on the time series of CI.

Method, apparatus, server and system for real-time vital sign detection and monitoring

The present teaching relates to wireless power transmission based on power waveforming. In one example, an apparatus for wireless power transmission is disclosed. The apparatus comprises: at least one antenna configured for receiving at least one wireless signal from a receiver, via a multipath channel between the apparatus and the receiver; and at least one processor configured for estimating at least one channel state information (CSI) of the multipath channel based on the at least one wireless signal, determining a power transmission waveform based on the at least one CSI, and calculating a power transfer signal based on the power transmission waveform and a reference signal. The at least one antenna is further configured for wirelessly transmitting the power transfer signal to the receiver.

Method, system, and apparatus for wireless power transmission based on power waveforming

A time-reversal wireless system comprising a first wireless transceiver of a time-reversal client, one or more second wireless transceiver and/or a time-reversal client with the first wireless transceiver. The first wireless transceiver of the time-reversal client is wirelessly coupled to the one or more second wireless transceiver through a wireless broadband multipath channel associated with a space. The time-reversal client contains the first wireless transceiver. The time-reversal client also contains a processor and a memory configured to obtain a set of channel state information (CSI) in a channel probing phase, and/or to obtain a set of location-specific signatures based on the set of CSI and/or a time reversal operation in a channel probing phase. The set of CSI is captured when one or more probing signal is sent either from the first wireless transceiver to each of the at least one second wireless transceiver, or from each of the at least one second wireless transceiver to the first wireless transceiver, through the wireless broadband multipath channel associated with the space. A channel passband with bandwidth W0 is associated with the wireless broadband multipath channel. A first passband with bandwidth W1 is associated with the first wireless transceiver. The W1 is not larger than W0 such that the first passband is part of the channel passband. One or more second passband is associated with the one or more second wireless transceiver such that a bandwidth W2 associated with each of the one or more second passband is not larger than W1 such that the each of the one or more second passband is part of the first passband. Each of the set of CSI include a channel impulse response, a channel frequency response, and/or another channel state data of the wireless broadband multipath channel.

Method, apparatus, server, and systems of time-reversal technology

Apparatus, systems and methods for detecting and monitoring fall-down actions and other transient motions are disclosed. In one example, a system for monitoring a transient motion in a venue is disclosed. The system comprises a transmitter, a receiver, and a transient motion monitor. The transmitter is located at a first position in the venue for transmitting a wireless signal through a wireless multipath channel impacted by the transient motion of an object in the venue. The receiver is located at a second position in the venue for: receiving the wireless signal through the wireless multipath channel, and obtaining a time series of channel information (CI) of the wireless multipath channel based on the wireless signal. The transient motion monitor is configured for: monitoring the transient motion based on the time series of CI, and triggering a response action based on the monitored transient motion.

Apparatus, systems and methods for fall-down detection based on a wireless signal

An apparatus for detecting events includes a processor and a storage device storing instructions that when executed by the processor cause the processor to train a classifier for classifying channel state information (CSI) and detecting an event based on the classification of the CSI obtained during a monitoring phase. The training of the classifier includes: for each of the known events to be detected, during a time period in which the known event occurs in a venue, obtain training CSI of a wireless multipath channel between a wireless transmitter and a wireless receiver in the venue, in which the training CSI is derived from one or more probing signals sent from the transmitter through the wireless multipath channel to the receiver, and train the classifier based on the known events and the training CSI associated with each of the events.

Method, apparatus, and systems for wireless event detection and monitoring

Apparatus, systems and methods for recognizing and classifying events in a venue based on a wireless signal are disclosed. In one example, a disclosed system comprises a first transmitter, a second transmitter, at least one first receiver, at least one second receiver, and an event recognition engine, in the venue. The first transmitter transmits a training wireless signal through a wireless multipath channel impacted by a known event in the venue in a training time period associated with the known event. Each first receiver receives asynchronously the training wireless signal, and obtains, asynchronously based on the training wireless signal, at least one time series of training channel information of the wireless multipath channel between the first receiver and the first transmitter. The second transmitter transmits a current wireless signal through the wireless multipath channel impacted by a current event in a current time period associated with the current event. Each second receiver receives asynchronously the current wireless signal, and obtains, asynchronously based on the current wireless signal, at least one time series of current channel information of the wireless multipath channel between the second receiver and the second transmitter. The event recognition engine trains a classifier based on the training channel information; and apples the classifier to: classify the current channel information and associate the current event with at least one of: a known event, an unknown event and another event.

Apparatus, systems and methods for event recognition based on a wireless signal

An apparatus for determining symbol timing in a communication system is provided. The apparatus includes a memory communicatively coupled to at least one processor. The at least one processor is configured to receive a first signal that includes a preamble sent at a first sampling rate with a first modulation through a channel and a data frame sent at a second sampling rate with a second modulation through the channel. The preamble includes a received code sequence, and the data frame includes a plurality of data symbols. The at least one processor is configured to compute a second signal that represents an estimate of an equivalent channel response using at least one of a known code sequence and the received first signal, down-sample the second signal and compute signal-to-interference-plus-noise ratios at a plurality of candidate timing offsets, and determine a symbol timing based on a particular timing offset associated with one of the computed signal-to-interference-plus-noise ratios.

Time-reversal communication systems

Method, apparatus and systems for object tracking are disclosed. In one example, a disclosed method includes obtaining at least one time series of channel information (CI) of a wireless multipath channel using: a processor, a memory communicatively coupled with the processor and a set of instructions stored in the memory. The at least one time series of channel information is extracted from a wireless signal transmitted between a Type 1 heterogeneous wireless device at a first position in a venue and a Type 2 heterogeneous wireless device at a second position in the venue through the wireless multipath channel. The wireless multipath channel is impacted by a current movement of an object in the venue. The method also includes determining a spatial-temporal information of the object based on at least one of: the at least one time series of channel information, a time parameter associated with the current movement, and a past spatial-temporal information of the object. The at least one time series of channel information is preprocessed. Associated computation may be shared among the processor, the Type 1 heterogeneous wireless device and the Type 2 heterogeneous wireless device.

Method, apparatus, and system for object tracking and navigation

A time-reversal positioning system includes a storage storing first data representing channel impulse responses derived from probe signals sent from a plurality of positions and second data representing coordinates of the positions. A data processor determines a position of a terminal device based on the stored channel impulse responses and a time-reversed signal determined based on a time-reversed version of a channel impulse response that is estimated based on a channel probing signal sent from the terminal device.

Wireless signals and techniques for determining locations of objects in multi-path environments

Transmitters and receivers for use in hybrid networks capable of supporting time-reversal division multi-access communication protocols are described. Wireless access points include a wireless receiver for receiving a wireless channel probe signal from a device and a wireless transmitter capable of supporting a time-reversal division multi-access (TRDMA) protocol and at least one other wireless communication protocol. A controller is used to control the operation of the wireless transmitter. Wireless terminal devices include a wireless transmitter for transmitting a wireless channel probe signal and a wireless receiver capable of supporting a TRDMA protocol and at least one other wireless communication protocol. A controller is used to control the operation of the wireless receiver. An example of the at least one other wireless communication protocol that may be supported is OFDMA. Network performance can be improved by using wireless access points and terminal devices that switch between supporting one wireless communication protocol or another or supporting multiple wireless communication protocols simultaneously.

Growing community of inventors

Ellicott City, MD, United States of America

Yi Han