Method and system for providing assistance to geolocation of node devices of an asynchronous RF network
US11067697B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2017 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Aug 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Where each node device is assumed to know the time-of-day with an accuracy of only plus or minus 1 second, the geolocation of said node device is determined by an A-GNSS server by help of a time-stamp known with an accuracy better than or equal to 10 milliseconds and added by at least one transceiver of the asynchronous RF network. Indeed, the technical feature of said asynchronous RF network according to which the time-of-day at which data are sent from each node device is known in a deterministic manner allows the A-GNSS server to determine retrospectively this time-of-day in function and with the precision of the time-stamp added by said at least one transceiver to the data packet issued from said node device over the asynchronous RF network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.