US 12,457,630 B2
Energy-state feedback for efficient wireless power transfer to IoT devices
Piyush Gupta, Bridgewater, NJ (US); Xiaojie Wang, Hillsborough, NJ (US); and Junyi Li, Fairless Hills, PA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Feb. 10, 2022, as Appl. No. 17/669,068.
Prior Publication US 2023/0254886 A1, Aug. 10, 2023
Int. Cl. H04W 72/12 (2023.01); H02J 13/00 (2006.01); H02J 50/00 (2016.01); H02J 50/80 (2016.01); H04W 72/542 (2023.01)
CPC H04W 72/542 (2023.01) [H02J 13/00002 (2020.01); H02J 50/001 (2020.01); H02J 50/80 (2016.02)] 32 Claims
OG exemplary drawing
 
1. A first wireless device comprising:
a first circuit configured to receive, from a second wireless device, a first signal for probing an energy state of the first wireless device and to transmit, based at least in part on receiving the first signal, a second, backscattered signal to the second wireless device, wherein the second signal indicates the energy state of the first wireless device; and
a second circuit configured to receive, from the second wireless device, an indication of time and frequency resources for harvesting energy based at least in part on the first circuit transmitting the second signal that indicates the energy state of the first wireless device.