Precise passenger location tracking for elevator access and dispatching

An elevator call system for calling an elevator car of the elevator call system, the elevator call system comprising:

• a first beacon in electronic communication with a dispatcher, the first beacon comprising:
• a first processor;
• and
• a first memory comprising a first list of computer-executable instructions that, when executed by the first processor, cause the first processor to perform a first set of operations, the first set of operations comprising:
• receiving, using the dispatcher, an elevator call from a passenger mobile device;
• transmitting, a first poll wireless signal;
• receiving, a first response wireless signal from a passenger mobile device in response to the first poll wireless signal;
• determining a first time of flight between transmission of the first poll wireless signal from the first beacon and receipt of the first response wireless signal at the first beacon;
• and
• calculating a first distance between the first beacon and the passenger mobile device based on the first time of flight,
• wherein the elevator call system is configured to determine a location of the passenger mobile device based on at least the first distance.

A computer program product embodied on a non-transitory computer readable medium, the computer program product including instructions that, when executed by a processor, cause the processor to perform operations comprising:

• transmitting, using a first beacon, a first poll wireless signal;
• receiving, using the first beacon, a first response wireless signal from a passenger mobile device in response to the first poll wireless signal;
• determining a first time of flight between transmission of the first poll wireless signal from the first beacon and receipt of the first response wireless signal at the first beacon;
• calculating a first distance between the first beacon and the passenger mobile device based on the first time of flight;
• and
• determining a location of the passenger mobile device based on at least the first distance.