US 11,943,621 B2
Secure localization in wireless networks
Ariton E. Xhafa, Plano, TX (US); Ram Machness, Plano, TX (US); Minghua Fu, Plano, TX (US); and Ramanuja Vedantham, Allen, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Dec. 11, 2018, as Appl. No. 16/216,919.
Prior Publication US 2020/0187010 A1, Jun. 11, 2020
Int. Cl. H04W 12/104 (2021.01); H04L 1/00 (2006.01); H04L 9/06 (2006.01); H04W 4/80 (2018.01); H04W 12/033 (2021.01); H04W 12/106 (2021.01); H04W 12/108 (2021.01); H04W 12/12 (2021.01); H04W 64/00 (2009.01); H04W 80/02 (2009.01)
CPC H04W 12/104 (2021.01) [H04L 1/0061 (2013.01); H04L 9/0631 (2013.01); H04W 4/80 (2018.02); H04W 12/033 (2021.01); H04W 12/106 (2021.01); H04W 12/108 (2021.01); H04W 12/12 (2013.01); H04W 64/00 (2013.01); H04W 80/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of data transmission, performed by a wireless device, the method comprising:
determining a first value for a localization tone;
inserting the first value of the localization tone into a data packet;
generating a modified localization tone such that, after whitening and encrypting, the modified localization tone returns to the first value;
inserting the modified localization tone into the data packet at an application layer of a communication protocol stack, the modified localization tone preceding data of a payload of the data packet and having a last bit immediately preceding a first bit of the data of the payload, wherein the inserting the modified localization tone in the data packet comprises replacing the first value of the localization tone in the data packet with the modified localization tone;
whitening the data packet after inserting the modified localization tone into the data packet;
encrypting the data packet after inserting the modified localization tone into the data packet; and
transmitting the data packet after the whitening and the encrypting the data packet.