18583966. METHOD OF TIME-OF-FLIGHT RANGING BETWEEN WIRELESS DEVICES simplified abstract (Qorvo US, Inc.)
Contents
METHOD OF TIME-OF-FLIGHT RANGING BETWEEN WIRELESS DEVICES
Organization Name
Inventor(s)
Michael Mclaughlin of Dublin (IE)
METHOD OF TIME-OF-FLIGHT RANGING BETWEEN WIRELESS DEVICES - A simplified explanation of the abstract
This abstract first appeared for US patent application 18583966 titled 'METHOD OF TIME-OF-FLIGHT RANGING BETWEEN WIRELESS DEVICES
Abstract: Disclosed are methods for time-of-flight (TOF) ranging between wireless devices using single-sided two-way ranging (SS-TWR) and double-sided TWR (DS-TWR) exchanges. The SS-TWR method involves determining path angles, relative carrier frequency offset, and response delay, calculating TOF delta, and finally calculating TOF using the determined information. The DS-TWR method eliminates the need for relative carrier frequency estimation, enabling accurate ranging between wireless devices.
Key Features and Innovation:
- Methods for TOF ranging between wireless devices using SS-TWR and DS-TWR exchanges.
- Consideration of path angles, relative carrier frequency offset, and response delay for accurate ranging.
- Elimination of relative carrier frequency estimation in DS-TWR method.
Potential Applications:
- Localization and tracking of objects.
- Indoor positioning systems.
- Distance measurement in IoT devices.
Problems Solved:
- Inaccurate ranging between wireless devices.
- Difficulties in estimating relative carrier frequency offset.
- Lack of precise localization and tracking capabilities.
Benefits:
- Improved accuracy in ranging between wireless devices.
- Enhanced localization and tracking capabilities.
- Simplified implementation on wireless devices.
Commercial Applications:
- Smart home systems for precise device location tracking.
- Industrial IoT applications for asset tracking.
- Autonomous vehicle navigation systems.
Questions about Time-of-Flight Ranging: 1. How does the SS-TWR method improve the accuracy of ranging between wireless devices? 2. What are the key differences between SS-TWR and DS-TWR methods in terms of ranging accuracy and implementation?
Frequently Updated Research: Ongoing research focuses on enhancing the efficiency and accuracy of TOF ranging methods in various wireless communication systems. Researchers are exploring new algorithms and techniques to further improve localization and tracking capabilities in IoT devices and other applications.
Original Abstract Submitted
Disclosed are methods for time-of-flight (TOF) ranging between wireless devices using single-sided two-way ranging (SS-TWR) and double-sided TWR (DS-TWR) exchanges. The SS-TWR method involves performing the exchange between the wireless devices and determining a first path angle, a relative carrier frequency offset of the initiator and responder devices, and response delay of the responder. The method also involves determining a single SS-TWR delay and calculating a TOF delta from the determined information. Finally, the method involves calculating the TOF using the TOF delta with the single SS-TWR delay. The DS-TWR method eliminates the need for the relative carrier frequency estimation. Both methods enable accurate ranging between wireless devices by considering first path angles, and delays delay, which can be used in a variety of applications such as localization and tracking of objects. The method can be implemented on a processor of one or more of the wireless devices.
