Wide area positioning systems and methods
US9035829B2 · kind B2 · utility
7Cited by
140References
62Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2012 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Jun 28, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Devices, systems, and methods for sending positional information from transmitters/beacons are disclosed. In one implementation a transmitter generates a range block including a ranging signal and a hybrid block including positioning data, and sends the range block and hybrid block in predefined slots in a transmit frame. A receiver in a user device receives signals from a plurality of transmitters and generates position/location information using trilateration and measured altitude information in comparison with transmitter altitude information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.