Optimized secure phase-based positioning
US11470450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2021 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Feb 19, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/0446
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are techniques for time-multiplexing between sensing and adjacent signal transmission functionalities on the same hardware platform, such as a chipset supporting a main ranging device in passive entry passive start (PEPS) applications using secure multi-carrier phase-based ranging solutions to estimate the range between the main ranging device and a target device. The supporting chipset may be configured to operate as a sensor to receive continuous tone (CT) signals or round-trip time (RTT) packets exchanged between the main ranging device and the target device in a timeslot of a ranging cycle to improve the accuracy of the range estimates. In a different timeslot, the supporting device may operate as a transmitter to transmit CT signals or RTT packet on a channel adjacent to the channel used by the main ranging device to protect the CT signals or the RTT packets transmitted from the main ranging device against symbol level attacks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.