Categorizing motion detected using wireless signals

A motion detection method comprising:

• obtaining frequency response signals based on wireless signals transmitted through a space and received at a wireless sensor device, a first subset of the frequency response signals associated with a first time period and based on wireless signals transmitted through the space during the first time period, a second subset of the of the frequency response signals associated with a second, different time period and based on wireless signals transmitted through the space during the second time period;
• by operation of one or more processors, determining values of a first statistical parameter for the first and second time periods by applying a first function to frequency components of the respective subsets of the frequency response signals;
• by operation of one or more processors, determining values of a second statistical parameter for the first and second time periods by applying a second function to frequency components of the respective subsets of the frequency response signals;
• identifying, out of the values of the first and second statistical parameters, a pattern of values associated exclusively with the first time period;
• and
• associating, in a motion detection database, the pattern of values with a category of motion that occurred in the space exclusively during the first time period.

A system comprising:

• a data processing apparatus;
• and
• a non-transitory computer-readable medium storing instructions that are operable when executed by the data processing apparatus to perform operations comprising:
• obtaining frequency response signals based on wireless signals transmitted through a space during a time period and received at a wireless sensor device;
• determining values of a first statistical parameter for the time period by applying a first function to frequency components of the frequency response signals;
• determining values of a second statistical parameter for the time period by applying a second function to frequency components of the frequency response signals;
• and
• identifying a category of motion that occurred in the space during the time period based on the values of the first and second statistical parameters.

A system comprising:

• a data processing apparatus;
• and
• a non-transitory computer-readable medium storing instructions that are operable when executed by the data processing apparatus to perform operations comprising:
• obtaining frequency response signals based on wireless signals transmitted through a space and received at a wireless sensor device, a first subset of the frequency response signals associated with a first time period and based on wireless signals transmitted through the space during the first time period, a second subset of the of the frequency response signals associated with a second, different time period and based on wireless signals transmitted through the space during the second time period;
• determining values of a first statistical parameter for the first and second time periods by applying a first function to frequency components of the respective subsets of the frequency response signals;
• determining values of a second statistical parameter for the first and second time periods by applying a second function to frequency components of the respective subsets of the frequency response signals;
• identifying, out of the values of the first and second statistical parameters, a pattern of values associated exclusively with the first time period;
• and
• associating, in a motion detection database, the pattern of values with a category of motion that occurred in the space exclusively during the first time period.