Bluetooth crowd-sourced triangualtion
US10094907B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2014 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Nov 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Beacon devices transmit beacon messages to alert an application on a mobile user device of the Beacon device's proximity. A Received Signal Strength Indication (RSSI) field may indicate the power level at which the beacon message was received at the mobile device. Where the transmission power of the beacon device is standardized, the application can infer the distance between the mobile user device the beacon device based upon the RSSI field. By considering successive RSSI values over time while the mobile device is in motion, in conjunction with GPS information for the mobile device, the location of the beacon device relative to the mobile device may be inferred. Multiple mobile devices may be used together to infer the beacon device's position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.