Cell ID based positioning from cell intersections
US8364164B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2006 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Aug 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods are described for determining location of wireless devices using signal strength of signals detected by the wireless devices. The strength of signals received from identifiable sources is typically compared to reference signal strength measurements collected or estimated at known locations. Information identifying the source of the signals is typically obtained from data provided in the signals. Mappers associate combinations of reference signal strengths with geometrically shaped geographical regions such that signal strength measurements can be used as indices to locate a region in which a wireless device can be found. Systems and methods are described for receiving signal strength information from known locations where the information can be used to update and improve mapping system databases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.