US 11,991,608 B2
Method and system for reliable detection of smartphones within vehicles
Wilfred Edwin Booij, Oslo (NO); and Magnus Oplenskedal, Oslo (NO)
Assigned to Sonitor Technologies AS, Oslo (NO)
Filed by Sonitor Technologies AS, Oslo (NO)
Filed on Aug. 16, 2022, as Appl. No. 17/888,731.
Application 17/888,731 is a continuation of application No. 16/806,456, filed on Mar. 2, 2020, granted, now 11,418,936.
Claims priority of provisional application 62/812,440, filed on Mar. 1, 2019.
Prior Publication US 2023/0110283 A1, Apr. 13, 2023
Int. Cl. H04W 4/48 (2018.01); H04W 4/024 (2018.01); H04W 4/029 (2018.01)
CPC H04W 4/48 (2018.02) [H04W 4/024 (2018.02); H04W 4/029 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method of in-vehicle presence detection comprising:
detecting, by a first mobile device, a signal having a characteristic of an in-vehicle detection system;
detecting, by a second device, the signal, the signal including content that is unique within a time space of an offset between the first mobile device and the second device, wherein the second device is a second mobile device or is a vehicle mounted device, and wherein the content is a random selected sequence of a predetermined byte length or a counter value that is unique within a latency of an arrival time between the first mobile device and the second device;
in response to respectively detecting, by the first mobile device and by the second device, the signal, transmitting, by the first mobile device and the second device, a first indication and a second indication to a cloud solution, wherein the first indication and the second indication represent respective detections of the signal having the characteristic of the in-vehicle detection system;
receiving, by the first mobile device, a first instruction from the cloud solution to analyze one or more first sensor signals to determine a first event;
receiving, by the second device, a second instruction from the cloud solution to analyze one or more second sensor signals to determine a second event;
transmitting, by the first mobile device, first information reflecting the first event and its respective first timing based on a first clock of the first mobile device;
transmitting, by the second device, second information reflecting the second event and its respective second timing based on a second clock of the second device;
cross-correlating, by the cloud solution, the first event, the second event, the first timing, the second timing and the content to generate an indication of in-vehicle presence.