US 12,380,304 B2
Item tracking using radio frequency identification filtering
Arthur Miller, La Mesa, CA (US); Jeffery Mark Torrance, Stanford, CA (US); and Nicolas Graube, Cambridge (GB)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Oct. 4, 2023, as Appl. No. 18/480,987.
Prior Publication US 2025/0117612 A1, Apr. 10, 2025
Int. Cl. G06K 17/00 (2006.01)
CPC G06K 17/0029 (2013.01) [G06K 17/00 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A wireless communication device, comprising:
at least one memory; and
at least one processor coupled to the at least one memory and configured to:
obtain a Radio Frequency Identification (RFID) observation corresponding to a plurality of backscatter signals from a plurality of RFID tags and based on an energizing signal, wherein each backscatter signal of the plurality of backscatter signals is indicative of an identifier of a respective RFID tag uniquely associated with a particular item of a plurality of items;
determine expected background noise information corresponding to the RFID observation, wherein the expected background noise information is indicative of a subset of the plurality of items based on a comparison between a location of the wireless communication device and item placement information for the plurality of items;
filter the RFID observation based on the expected background noise information, wherein a filtered RFID observation does not include information associated with the subset of the plurality of items indicated in the expected background noise information; and
determine a basket content estimation based on the filtered RFID observation, wherein the basket content estimation is indicative of one or more collected items of the plurality of items.