US 12,137,348 B2
Method and apparatus by which electronic device performs secure ranging
Mingyu Lee, Gyeonggi-do (KR); Sooyeon Jung, Gyeonggi-do (KR); and Haeyoung Jun, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd., (KR)
Appl. No. 18/015,847
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
PCT Filed Jul. 5, 2021, PCT No. PCT/KR2021/008494
§ 371(c)(1), (2) Date Jan. 12, 2023,
PCT Pub. No. WO2022/014924, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 10-2020-0086974 (KR), filed on Jul. 14, 2020.
Prior Publication US 2023/0262467 A1, Aug. 17, 2023
Int. Cl. H04W 12/50 (2021.01); H04L 9/08 (2006.01); H04W 12/0431 (2021.01); H04W 12/08 (2021.01)
CPC H04W 12/50 (2021.01) [H04L 9/0819 (2013.01); H04W 12/0431 (2021.01); H04W 12/08 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method, performed by an electronic device, of performing secure ranging with a target device, the method comprising:
receiving a connection message for communication using a first communication method with the target device through a first communicator;
transmitting, by a first applet in a secure element (SE) of the electronic device, a ranging session key for the target device to a second applet in the SE, the ranging session key being stored in the first applet;
receiving a ranging session request from the target device;
based on the ranging session request, obtaining, by a second communicator, the ranging session key for the target device from the second applet; and
by using the ranging session key, performing secure ranging using a second communication method with the target device through the second communicator,
wherein the first communication method is a Bluetooth low energy (BLE) communication method, and the second communication method is an ultra-wide band (UWB) communication method, and
wherein the connection message comprises information in which identification information about the target device is encrypted.