CPC H04W 4/02 (2013.01) [G01P 13/00 (2013.01); G01S 5/26 (2013.01); G06F 1/12 (2013.01); G06F 1/14 (2013.01); H04W 4/33 (2018.02); H04W 4/80 (2018.02)] | 20 Claims |
1. A method associated with a real-time location system, the method comprising:
receiving a global clock signal at a server;
associating a reference clock with the received global clock signal, wherein the associating the reference clock with the received global clock signal comprises:
transmitting a clock value associated with the received global clock signal to a micro-controller;
triggering, by the micro-controller, an interrupt to the reference clock; and
receiving, by the micro-controller, a clock value from the reference clock in response to the interrupt;
transmitting an acoustic signal from a location transmitter at a time synchronized with the reference clock;
receiving, by a mobile device, a clock signal associated with the global clock signal;
receiving, by the mobile device, the acoustic signal;
time-stamping, using an audio clock, the received acoustic signal;
synchronizing the audio clock with the reference clock using the global clock signal; and
determining a location of the mobile device based on the synchronizing the audio clock.
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