US 12,143,416 B2
Relay-attack resistant communications
Tomas Motos, Oslo (NO); and Khanh Tuan Le, Nesbru (NO)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Jul. 14, 2023, as Appl. No. 18/352,504.
Application 18/352,504 is a continuation of application No. 17/113,521, filed on Dec. 7, 2020, granted, now 11,743,283.
Application 17/113,521 is a continuation of application No. 15/200,896, filed on Jul. 1, 2016, granted, now 10,897,477, issued on Jan. 19, 2021.
Prior Publication US 2023/0362188 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 9/40 (2022.01); G07C 9/00 (2020.01); H04L 67/12 (2022.01); H04W 12/122 (2021.01); H04W 56/00 (2009.01); H04L 5/16 (2006.01); H04L 7/033 (2006.01); H04W 84/20 (2009.01)
CPC H04L 63/1433 (2013.01) [G07C 9/00309 (2013.01); H04L 63/08 (2013.01); H04L 63/1416 (2013.01); H04L 63/1441 (2013.01); H04L 63/1466 (2013.01); H04L 67/12 (2013.01); H04W 12/122 (2021.01); H04W 56/001 (2013.01); H04L 5/16 (2013.01); H04L 7/033 (2013.01); H04W 84/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
transmitting, during an initialization phase and by a first wireless device, a first packet that includes an indication of a first timeslot duration; and
during an interlocked phase,
alternating, by the first wireless device, between transmit and receive modes during respective timeslots of a plurality of timeslots, wherein each of the plurality of timeslots has a duration equal to the first timeslot duration,
receiving a second packet from another wireless device when the first wireless device is in the receive mode during a first timeslot of the plurality of timeslot,
transmitting a third packet when the first wireless device is in the transmit mode during a second timeslot of the plurality of timeslots, and
suspending, by the first wireless device, wireless communication with the another wireless device in response to detecting an overlap between transmission of the third packet and reception of the second packet.