Supporting the creation of a radio map
US10397739B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Mar 3, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system obtains from each of a plurality of mobile devices a batch of data for a site. A batch includes data enabling a determination of a reference position, sensor data of motion sensors and sets of results of measurements performed by the mobile device on radio signals at different locations, each set including at least one indication of a received signal strength of radio signals and an associated identifier of at least one radio transmitter transmitting the radio signals. In at least two iterations, the system processes each batch to determine for each mobile device a (refined) sequence of fingerprints associating a respective position, which is based on the at least one reference position, the sensor data (and estimated characteristics of radio transmitters), with each set of results of measurements; and estimates characteristics of the radio transmitters based on the (refined) sequences of fingerprints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.