US 12,309,254 B2
Wireless devices and systems including examples of cross correlating wireless transmissions
Fa-Long Luo, San Jose, CA (US); Tamara Schmitz, Scotts Valley, CA (US); Jeremy Chritz, Seattle, WA (US); and Jaime Cummins, Bainbridge Island, WA (US)
Assigned to Micron Technology, Inc., Boise, ID (US)
Filed by MICRON TECHNOLOGY, INC., Boise, ID (US)
Filed on Feb. 8, 2024, as Appl. No. 18/436,965.
Application 18/436,965 is a continuation of application No. 18/065,097, filed on Dec. 13, 2022, granted, now 11,902,411.
Application 18/065,097 is a continuation of application No. 17/090,123, filed on Nov. 5, 2020, granted, now 11,539,502, issued on Dec. 27, 2022.
Application 17/090,123 is a continuation of application No. 16/426,518, filed on May 30, 2019, granted, now 10,841,076, issued on Nov. 17, 2020.
Application 16/426,518 is a continuation of application No. 15/374,831, filed on Dec. 9, 2016, granted, now 10,333,693, issued on Jun. 25, 2019.
Prior Publication US 2024/0178987 A1, May 30, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 7/04 (2006.01); H04L 27/00 (2006.01); H04L 27/26 (2006.01)
CPC H04L 7/042 (2013.01) [H04L 27/0006 (2013.01); H04L 27/2647 (2013.01); H04L 27/2663 (2013.01); H04L 27/2678 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method comprising:
receiving indications of radio frequency (RF) energy in a portion of a wireless spectrum, wherein the RF energy is associated with transmission to or from a first antenna and a second antenna;
determining a cross correlation associated with the RF energy in the portion of the wireless spectrum at the first antenna and the second antenna, wherein determining the correlation associated with the RF energy in the portion of the wireless spectrum includes cross correlating symbols indicative of a first RF energy of the RF energy with symbols indicative of a second RF energy of the RF energy to determine a statistic;
auto-correlating respective powers of the symbols indicative of the RF energy to calculate an additional statistic and provide an additional indication of an absence of the wireless communication signal in the portion of the wireless spectrum based, at least in part, on a comparison of the additional statistic with an additional threshold value, wherein the statistic is calculated based, at least in part, on the additional statistic;
performing a comparison of a result of the cross correlation to a threshold value; and
determining a presence or an absence of a wireless communications signal based on the comparison of the result of the cross correlation to the threshold value.