US 12,452,637 B2
Mechanism for detecting attacks on frequency offset in a wireless network
Michael Bogdanov, Hod Ha-Sharon (IL); and Yael Anati, Ramat Gan (IL)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Dec. 24, 2021, as Appl. No. 17/645,975.
Prior Publication US 2022/0116760 A1, Apr. 14, 2022
Int. Cl. H04W 4/80 (2018.01); H04L 25/02 (2006.01); H04W 4/02 (2018.01)
CPC H04W 4/80 (2018.02) [H04L 25/022 (2013.01); H04W 4/023 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device, the device comprising processing circuitry coupled to storage, the processing circuitry configured to:
receive a packet from a reflector device, wherein the packet comprises an access code and a coded sequence of bits encoded using Gaussian Frequency Shift Keying (GFSK);
receive a tone signal from the reflector device;
calculate a first frequency offset estimation associated with the packet, based at least on the coded sequence of bits;
calculate a second frequency offset estimation associated with the tone signal;
calculate a difference between the first frequency offset estimation and the second frequency offset estimation; and
identify an allowable threshold range of the difference, and determine whether the difference is within the allowable threshold range to detect potential interference with the tone signal.