Indoor localization of mobile device using labels
US8538442B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2011 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Aug 24, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0278
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To localize a mobile device in an indoor area, labels are positioned at locations throughout the indoor area and signal strength is recorded at the label positions from different wireless network access points that are available in the indoor area. As a user traverses the indoor area with the mobile device, individual label identifiers are entered into the mobile device and the strength of the wireless network signals is recorded at each label position. The sampled wireless network signal strength and the corresponding label identifiers and positions are recorded to generate a mapping that identifies wireless network signal strength at each of the different label positions in the indoor area. The mapping may then be accessed to identify the locations of other mobile device users that subsequently enter the indoor area based on the wireless network signal strength from the different access points detected by the other mobile devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.