Indoor location position system and method
US12270925B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 14, 2021 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Oct 15, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A location position system can include a plurality of beacons arranged a grid formation divided into a plurality of sub-grids. A mobile computing device can implement a location position application and can receive a radio signal from a particular beacon of the plurality of beacons. The radio signal can comprise a data component uniquely identifying the particular beacon, which can be used to identify a particular sub-grid of the plurality of sub-grids. An audio signal can be received from each of a set of sub-grid beacons associated with the particular sub-grid. Each audio signal can: (i) have a frequency in the frequency range of 16 kHz to 24 kHz and a transmission delay from a reference time, (ii) lack any additional identifying data, and (iii) be separately transmitted from the radio signal transmitted by the particular beacon. The mobile computing device can determine its position based on the received audio signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.