Wireless LAN signal based motion detection method and device

A sensing device configured to perform movement detection by using a measurement value representing a channel state measured using a wireless LAN signal, the sensing device comprising:

• a memory;
• and
• a processor,
• wherein the processor is configured to:
• obtain a standard deviation of magnitudes of measurement values within a measurement window, wherein the measurement window is a time interval during which measurement is performed;
• and
• obtain a result of a movement detection of a sensing algorithm which is based on the obtained standard deviation value, and
• wherein the processor is further configured to use, as the measurement values, only a measurement value of an antenna having a smallest mean value of standard deviation of the measurement values within the measurement window, when the wireless LAN signal is simultaneously exchanged through a plurality of antennas of one terminal, and wherein the sensing algorithm is an algorithm learned based on a correlation between a value obtained based on the magnitudes of the measurement values and a presence or absence of movement around devices exchanging the wireless LAN signal.