Motion detection based on beamforming dynamic information from wireless standard client devices
In a general aspect, motion is detected using wireless signals. In one example, a wireless standard protocol message is transmitted by a wireless communication device through a space to one or more neighbor devices. A corresponding wireless standard protocol response including beamforming information feedback is received from each of the one or more neighbor devices in response to the wireless standard protocol message. Motion of an object in the space is detected based on the beamforming information feedback from each of the neighbor devices.
1. A motion detection method, comprising:
transmitting, by a wireless communication device, a wireless standard protocol message through a space to one or more neighbor devices;
receiving a corresponding wireless standard protocol response comprising beamforming information feedback in response to the wireless standard protocol message from each of the one or more neighbor devices; and
detecting motion of an object in the space based on the beamforming information feedback from each of the neighbor devices;
wherein detecting motion of the object comprises:
generating spatial maps based on the dynamic beamforming information, and
analyzing changes in the spatial maps over time.
2. The method of claim 1 , wherein the wireless standard protocol message is generated by the wireless communication device according to a wireless communication standard, and the wireless standard protocol response is generated according to the wireless communication standard.
3. The method of claim 2 , wherein the wireless communication standard comprises an IEEE 802.11 standard.
4. The method of claim 2 , wherein the wireless communication standard comprises a mesh network standard.
5. The method of claim 1 , wherein the wireless standard protocol message comprises a ping addressed to a particular neighbor device.
6. The method of claim 1 , wherein the wireless standard protocol message comprises a ping broadcast to a plurality of neighbor devices.
7. The method of claim 1 , wherein the wireless standard protocol message comprises data traffic.
8. The method of claim 1 , wherein the beamforming information feedback comprises at least one of:
an H-matrix;
a V-matrix; or
a compressed V-matrix.
9. The method of claim 1 , wherein the wireless communication device and one or more neighbor devices form an ad-hoc motion sensing network.
10. The method of claim 1 , using the beamforming information feedback to detect a location of the object in the space.
11. A wireless communication device comprising:
a processor; and
a memory comprising instructions which, when executed by the processor, cause the wireless communication device to perform operations comprising:
transmitting a wireless standard protocol message through a space to one or more neighbor devices;
receiving a corresponding wireless standard protocol response comprising beamforming information feedback in response to the wireless standard protocol message from each of the one or more neighbor devices; and
detecting motion of an object in the space based on the beamforming information feedback from each of the neighbor devices;
wherein detecting motion of the object comprises:
generating spatial maps based on the dynamic beamforming information, and analyzing changes in the spatial maps over time.
12. The device of claim 11 , wherein the wireless standard protocol message is generated by the wireless communication device according to a wireless communication standard, and the wireless standard protocol response is generated according to the wireless communication standard.
13. The device of claim 12 , wherein the wireless communication standard comprises an IEEE 802.11 standard.
14. The device of claim 12 , wherein the wireless communication standard comprises a mesh network standard.
15. The device of claim 11 , wherein the wireless standard protocol message comprises a ping addressed to a particular neighbor device.
16. The device of claim 11 , wherein the wireless standard protocol message comprises a ping broadcast to a plurality of neighbor devices.
17. The device of claim 11 , wherein the wireless standard protocol message comprises data traffic.
18. The device of claim 11 , wherein the beamforming information feedback comprises at least one of:
an H-matrix;
a V-matrix; or
a compressed V-matrix.
19. The device of claim 11 , wherein the wireless communication device and one or more neighbor devices form an ad-hoc motion sensing network.
20. The device of claim 11 , using the beamforming information feedback to detect a location of the object in the space.
21. A non-transitory computer-readable medium comprising instructions that, when executed by data processing apparatus, perform operation comprising:
transmitting, by a wireless communication device, a wireless standard protocol message through a space to one or more neighbor devices;
receiving a corresponding wireless standard protocol response comprising beamforming information feedback in response to the wireless standard protocol message from each of the one or more neighbor devices; and
detecting motion of an object in the space based on the beamforming information feedback from each of the neighbor devices;
wherein detecting motion of the object comprises:
generating spatial maps based on the dynamic beamforming information, and analyzing changes in the spatial maps over time.
22. The computer-readable medium of claim 21 , wherein the wireless standard protocol message is generated by the wireless communication device according to a wireless communication standard, and the wireless standard protocol response is generated according to the wireless communication standard.
23. The computer-readable medium of claim 22 , wherein the wireless communication standard comprises an IEEE 802.11 standard.
24. The computer-readable medium of claim 21 , wherein the wireless standard protocol message comprises a ping addressed to a particular neighbor device.
25. The computer-readable medium of claim 21 , wherein the wireless standard protocol message comprises a ping broadcast to a plurality of neighbor devices.
26. The computer-readable medium of claim 21 , wherein the wireless standard protocol message comprises data traffic.
27. The computer-readable medium of claim 21 , wherein the beamforming information feedback comprises at least one of:
an H-matrix;
a V-matrix; or
a compressed V-matrix.
28. The computer-readable medium of claim 21 , wherein the wireless communication device and one or more neighbor devices form an ad-hoc motion sensing network.
29. The computer-readable medium of claim 21 , the operations comprising using the beamforming information feedback to detect a location of the object in the space.