Estimating the location of inexpensive wireless terminals by using signal strength measurements
US7389114B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2004 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Apr 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system is disclosed that enables the estimation of the location of a wireless terminal in a wireless network. The illustrative embodiment works without requiring modifications to be made to the wireless terminal. Furthermore, the hardware of some embodiments of the present invention can be inexpensively deployed indoors. Some embodiments of the present invention are, therefore, ideally suited for use with legacy indoor systems. The system of the illustrative embodiment of the present invention, in some embodiments, uses an offline process and an online process for location estimation. The described system, however, can be used with other techniques for location estimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.