Patent ID: 8660578
Filing Date: 2014-02-25
Classification: G01S,H04W

Abstract:
1. A method for detecting motion with a device, comprising: receiving, at the device, a first set of wireless signals from a first transmitter; receiving, at the device, a second set of wireless signals from a second transmitter; determining, at the device, a first value indicative of fading attenuations experienced by the first set of wireless signals; determining, at the device, a second value indicative of fading attenuations experienced by the second set of wireless signals; determining whether the first value is consistent with motion of an object in proximity to the device; determining whether the second value is consistent with motion of the object in proximity to the device; and outputting an indication of presence of the object if the first value and the second value are consistent with motion of the object in proximity to the device.