ASYNCHRONOUS TIME DIFFERENCE OF ARRIVAL RANGING METHOD FOR PASSIVE-LISTENING DEVICES
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United States of America Patent
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Issued Date -
Feb 29, 2024
app pub date -
Jan 14, 2022
filing date -
Jan 15, 2021
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Abstract
An exemplary method is disclosed that can passively listen for IEEE 802.15.4z communication between two active 802.15.4z devices to provide high-precision and reliable ranging and/or localization determination at a third device through tag time difference of arrival determination performed at the third device. Notably, the exemplary device (the third device) is not required to be in active communication with the two active messaging devices, nor is this third device an active participant in the ranging messaging between exchange between the two active messaging devices.
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