Patent ID: 8754752

Claim:
A system for locating radio frequency identification (RFID) tags comprising: a plurality of RFID readers comprising first, second, and third RFID readers, each RFID reader comprising: an RFID transmitter; and an RFID receiver; the first RFID reader configured to transmit a single radio frequency (RF) signal at a particular time from the RFID transmitter of the first RFID reader to a tag to be located; each of the first, second, and third RFID readers configured to receive, at their corresponding RFID receiver, a signal backscattered off the tag from the single RF signal transmitted by the first RFID reader; each of the first, second, and third RFID readers further configured to extract at least one measured position parameter from said signal backscattered off the tag and received at the first, second, and third RFID readers; and at least one RFID reader in the plurality of the RFID readers further configured to determine a location of the tag using said measured position parameters extracted from the signal backscattered off the tag from the single RF signal transmitted at the particular time from the first RFID reader, wherein all measured position parameters used in determining the location of the tag are extracted from said signal backscattered off the tag from said single transmission at said particular time from the first RFID reader.