Loading patent…
AssigneeQUALCOMM Incorporated
InventorsErik David Lindskog, Xiaoxin Zhang, Youhan Kim, Louay Jalloul, Kurt Erwin Landenberger, Youngsin Lee, Srinivasarao Kode, Manishekar Chandrasekaran
Estimating the term…
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for detecting motion using wireless local area network (WLAN) communications. A first WLAN device having multiple antennas (radios) may determine a metric based on differences in spatial signal processing characteristics between the multiple antennas. By comparing changes in the metric over a plurality of wireless signals over time, the first WLAN device may detect motion in the environment near the first WLAN device. The spatial signal processing characteristics may be based on received WLAN communications from a second WLAN device, based on beamforming feedback from the second WLAN device, or based on wireless signal reflections detected by the first WLAN device. Various techniques may be used to adjust or mitigate random phase differences between two antennas on some tones. Motion detection based on WLAN communications may trigger activities or notifications by the first WLAN device.
A method performed by a wireless local area network (WLAN) interface of a first WLAN device, comprising:
An apparatus for use in a first wireless local area network (WLAN) device, comprising:
A non-transitory computer-readable medium having stored therein instructions which, when executed by a processor of a first wireless local area network (WLAN) device having a WLAN interface, cause the first WLAN device to:
Dependencies are inferred from the claim text.