Location transition determination
US9161175B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2014 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | May 31, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, systems, and computer program product for location transition determination are described. A mobile device can use location fingerprint data and sensor readings to determine a transition of the mobile device into or out of a portion of a venue by using particle filters. When the mobile device determines that the mobile device is located at a first portion of the venue, e.g., on a given floor, the mobile device can introduce candidate locations, or particles, on a second portion of the venue and candidate locations outside of the venue. If estimated locations at the first portion of the venue do not converge, the mobile device can increase weight of the candidate locations that are outside of the first portion of the venue to detect possible transition to the second portion of the venue or to outside of the venue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.