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

A method for monitoring object motion in a venue, comprising:

• receiving a wireless signal through a wireless multipath channel impacted by a pseudo-periodic motion of an object in the venue;
• obtaining at least one time series of channel information (CI) of the wireless multipath channel based on the wireless signal;
• determining that at least one portion of the at least one time series of CI (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.

A receiver of a motion monitoring system, comprising:

• a wireless circuitry configured to receive a wireless signal through a wireless multipath channel impacted by a pseudo-periodic motion of an object in a venue, wherein the wireless signal is transmitted asynchronously by a transmitter of the motion monitoring system;
• a processor communicatively coupled with the wireless circuitry;
• a memory communicatively coupled with the processor;
• and
• a set of instructions stored in the memory which, when executed, causes the processor to obtain at least one time series of channel information (CI) of the wireless multipath channel based on the wireless signal, wherein:
• at least one portion of the at least one time series of CI (TSCI) in a current sliding time window is associated with the pseudo-periodic motion of the object in the venue, and
• the at least one portion of the at least one TSCI in the current sliding time window is to be used by a vital sign estimator of the motion monitoring system to compute 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.

An estimator of a motion monitoring system, comprising:

• a processor;
• a memory communicatively coupled with the processor;
• and
• a set of instructions stored in the memory which, when executed, causes the processor to perform:
• obtaining at least one time series of channel information (TSCI) of a wireless multipath channel from a receiver of the motion monitoring system, wherein the receiver extracts the at least one TSCI from a wireless signal received from a transmitter of the motion monitoring system through the wireless multipath channel impacted by a pseudo-periodic motion of an object in a venue,
• 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.