	US 12,105,178 B2
	Methods and apparatus for multimodal audience detection and identification
Marko Usaj, Izola (SI); Andrej Barbis, Ilirska Bistrica (SI); Joze Arh, Rakek (SI); and John Stavropoulos, Edison, NJ (US)
Assigned to The Nielsen Company (US), LLC, New York, NY (US)
Filed by The Nielsen Company (US), LLC, New York, NY (US)
Filed on Feb. 28, 2022, as Appl. No. 17/683,113.
Application 17/683,113 is a continuation of application No. PCT/US2020/048009, filed on Aug. 26, 2020.
Application PCT/US2020/048009 is a continuation of application No. 16/554,376, filed on Aug. 28, 2019, granted, now 11,668,808.
Prior Publication US 2022/0187437 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 13/04 (2006.01); G01S 7/41 (2006.01); G01S 11/06 (2006.01); H04B 17/318 (2015.01); H04N 21/41 (2011.01); H04W 4/80 (2018.01); H04W 64/00 (2009.01)

CPC G01S 13/04 (2013.01) [G01S 7/412 (2013.01); G01S 11/06 (2013.01); H04B 17/318 (2015.01); H04N 21/4126 (2013.01); H04W 4/80 (2018.02); H04W 64/003 (2013.01)]

20 Claims

1. A proximity detection system comprising a processor and a memory, the proximity detection system configured to:

select a portion of a set of signal strength values associated with advertising packets from a device, the device associated with a user, the advertising packets captured by a multi-axis receiver on a plurality of different signal polarizations;

calculate a first representative signal strength value based on the selected portion of signal strength values; and

determine a presence of the user based on whether the first representative signal strength value satisfies a threshold.