US 12,463,675 B2
Radio frequency exposure estimation with radar for mobile devices
Vutha Va, Plano, TX (US); Anum Ali, Plano, TX (US); Jianhua Mo, Allen, TX (US); and Boon Loong Ng, Plano, TX (US)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 10, 2022, as Appl. No. 17/654,386.
Claims priority of provisional application 63/229,651, filed on Aug. 5, 2021.
Prior Publication US 2023/0041835 A1, Feb. 9, 2023
Int. Cl. H04B 1/38 (2015.01); G01S 7/41 (2006.01); G01S 13/86 (2006.01); H04B 1/3827 (2015.01); H04W 52/30 (2009.01)
CPC H04B 1/3838 (2013.01) [G01S 7/415 (2013.01); G01S 13/86 (2013.01); H04W 52/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device for exposure level estimation, comprising:
a radar transceiver;
a communication interface; and
a processor operably connected to the radar transceiver and the communication interface, the processor configured to:
transmit (i) radar signals, via the radar transceiver, for object detection and (ii) communication signals, via the communication interface, for wireless communication operations;
identify a location of an object relative to the electronic device within a first time duration based on reflections of the radar signals, the first time duration including a previous time until a current time;
identify instantaneous power densities corresponding to the location of the object for each time instance of multiple time instances during the first time duration;
determine a radio frequency (RF) exposure measurement associated with the object based on the identified instantaneous power densities and the location of the object over the first time duration, the RF exposure measurement accumulated over the first time duration;
determine a power density budget over a second time duration based on a comparison of the RF exposure measurement to an RF exposure threshold, the second time duration including the current time until a future time; and
modify the wireless communication operations for the second time duration based on the power density budget.