Google Inc.

Raymond Reynolds Hayes

Dongeek Shin

Nihar Jindal

Brian Mitchell Silverstein

Kevin Neal Hayes

Srinivasa Kumar Duvvuri

Zhifeng Cai

Andrew Clegg

Der-Woei Wu

Yu Wen

This document describes techniques and devices to detect and classify human and animal presence and/or motion based on changes in the interaction of the human or animal with Wireless Local Area Network (WLAN) radio frequency (RF) signals within or about a building structure, such as a home or office. A first WLAN device transmits a sounding packet to a second WLAN device and receives an acknowledgement (ACK) of receiving the sounding packet by the second WLAN device. The first WLAN device uses the received ACK to determine Channel State Information (CSI) for an RF signal path between the first WLAN device and the second WLAN device, aggregates the determined CSI with additional CSI, and uses the aggregated CSI to determine a presence or a motion within the structure.

Motion detection using wireless local area networks

A method for generating a geofence includes receiving, at an automated frequency coordination (AFC) system, a geofence request from an AFC device where the geofence request requests to use a licensed radio frequency band and includes one or more operating parameters for the AFC device. The method also includes determining, by the AFC system, whether any of the one or more operating parameters interfere with any licensed devices on the licensed radio frequency band. When none of the one or more operating parameters interfere with any of the licensed devices on the licensed frequency band, the method further includes generating, by the AFC system, based on the one or more operating parameters, a geofence defining an operating boundary for the AFC device to communicate within. The method also includes communicating, from the AFC system to the AFC device, a response to the geofence request where the response includes the geofence.

Reverse geofence feature in an automated frequency coordination system

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Los Gatos, CA, United States of America

Raymond Reynolds Hayes