US 12,250,611 B2
Positioning guidance for RFID devices
Markus Wobak, Graz (AT); Thomas Spiss, Sankt Radegund (AT); and Abu Syed Firoz Ismail, Rellingen (DE)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on Aug. 8, 2022, as Appl. No. 17/818,162.
Claims priority of application No. 21194606 (EP), filed on Sep. 2, 2021.
Prior Publication US 2023/0065694 A1, Mar. 2, 2023
Int. Cl. H04W 4/024 (2018.01); G06Q 20/32 (2012.01); H04B 17/318 (2015.01); H04W 4/02 (2018.01)
CPC H04W 4/024 (2018.02) [G06Q 20/3224 (2013.01); G06Q 20/3278 (2013.01); H04B 17/318 (2015.01); H04W 4/027 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for guiding a user for positioning a first RFID-enabled device relative to a second RFID-enabled device for allowing a robust RFID communication between the two RFID-enabled devices, the method comprising:
placing the first RFID-enabled device to a first position relative to the second RFID-enabled device;
receiving, by the first RFID-enabled device, when being located at the first position, a first RFID signal transmitted by the second RFID-enabled device;
measuring, by the first RFID-enabled device, a first signal strength of the first RFID signal;
placing the first RFID-enabled device to a second position relative to the second RFID-enabled device;
receiving, by the first RFID-enabled device, when being located at the second position, a second RFID signal transmitted by the second RFID-enabled device;
measuring, by the first RFID-enabled device, a second signal strength of the first RFID signal;
determining, based on the first signal strength and on the second signal strength, a movement indication for a movement of the first RFID-enabled device towards a target position, at which there is expected a target RF coupling strength between the two RFID-enabled devices, which is stronger than a first RF coupling strength being associated with the first position and a second RF coupling strength being associated with the second position; and
providing the determined movement indication to the user of the first RFID-enabled device.