Patent ID: 9749782
Date: 2017-08-29
CPC Classifications: G01C,H04B,H04W,H05B

Claim:
1. A method for mapping light fixtures at a mobile device, comprising: receiving a first encoded light signal from a first light fixture and a second encoded light signal from a second light fixture; decoding the first and second encoded light signals to obtain respective identifiers associated with the first and second light fixtures; time-stamping each of the respective identifiers with a common time-stamp; acquiring time-stamped sensor measurements, each time-stamped sensor measurement comprising a respective first direction-of-arrival of the first encoded light signal and a respective second direction-of-arrival of the second encoded light signal; processing at least some of the time-stamped sensor measurements using a probability function to determine a sequence of time-stamped locations of the mobile device, each time-stamped location of the sequence of time-stamped locations determined with respect to a location of the first light fixture and a location of the second light fixture; and determining, based at least in part on the respective first and second directions-of-arrival, a correspondence between the respective identifiers having the common time-stamp and each time-stamped location of the sequence of time-stamped locations of the mobile device.