Altitude map for indoor positioning services
US10070259B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2017 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Feb 24, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is disclosed comprising: obtaining a plurality of pieces of estimation information, the obtaining comprising receiving or determining the plurality of pieces of estimation information, wherein each of the plurality of pieces of estimation information represents one or more respective absolute values of an altitude, wherein each of the one or more absolute values of an altitude is associated with a respective position information, each of the plurality of pieces of estimation information determined based, at least in part, on a respective relative altitude information and, at least in part, on a respective absolute altitude information associated with a data element of a database comprising map data representing an altitude map; and aggregating the plurality of pieces of estimation information in a spatial grid, wherein the spatial grid is divided into a plurality of grid points. It is further disclosed an according apparatus, computer program and system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.