System and method for determining signal source location in wireless local area network

An apparatus, comprising:

• memory including machine-readable instructions;
• and
• a processor to execute the machine-readable instructions to perform operations comprising:
• receiving, from a first signal reader, a first time-of-arrival measurement for a first radio frequency (RF) signal generated by a first wireless local area network (WLAN) signal source located at a first known location, the first time-of-arrival measurement being relative to a first clock of the first signal reader;
• receiving, from a second signal reader, a second time-of-arrival measurement for the RF signal, the second time-of-arrival measurement being relative to a second clock of the second signal reader, wherein the first clock is not synchronized with the second clock;
• defining a first time relationship between the first clock and a system time based on the first time-of-arrival measurement;
• and
• defining a second time relationship between the second clock and the system time based on the second time-of-arrival measurement.

A machine-readable storage device comprising instruction that, when executed, cause a machine to at least:

• receive, from a first signal reader, a first time-of-arrival measurement for a first radio frequency (RF) signal generated by a first wireless local area network (WLAN) signal source located at a first known location, the first time-of-arrival measurement being relative to a first clock of the first signal reader;
• receive, from a second signal reader, a second time-of-arrival measurement for the RF signal, the second time-of-arrival measurement being relative to a second clock of the second signal reader, wherein the first clock is not synchronized with the second clock;
• define a first time relationship between the first clock and a system time based on the first time-of-arrival measurement;
• and
• define a second time relationship between the second clock and the system time based on the second time-of-arrival measurement.