Integrated radar in wireless local area network (wlan) radio for presence detection

A method of operating a wireless device, the method comprising:

• sending, via a first antenna, a set of chirps in a first portion of a frame having a specified frame duration;
• receiving, via a second antenna, reflected signals corresponding to the set of chirps;
• generating in-phase and quadrature (IQ) samples based on the reflected signals and the set of chirps;
• sending data to a second device via the first antenna, the data included in a second portion of the frame;
• generating, using RF signals sent or received by the wireless device, channel state information (CSI) data representing channel properties of a first channel;
• and
• determining, using the IQ samples and the CSI data, that an environment in which the wireless device is located has been disrupted by a presence or motion of a person.

A wireless device comprising:

• a radar unit;
• a wireless local area network (WLAN) radio;
• and
• a processing device operatively coupled to the radar unit and the WLAN radio, wherein the processing device is to:
• send, using the radar unit via a first antenna, a set of chirps in a first portion of a frame having a specified frame duration;
• receive, using the radar unit via a second antenna, reflected signals corresponding to the set of chirps;
• generate in-phase and quadrature (IQ) samples based on the reflected signals and the set of chirps;
• send, using the WLAN radio, data to a second device via the first antenna, the data included in a second portion of the frame;
• generate, using RF signals sent or received by the wireless device, channel state information (CSI) data representing channel properties of a first channel;
• and
• determine, using the IQ samples and the CSI data, that an environment in which the wireless device is located has been disrupted by a presence or motion of a person.