Enhanced area separation in wireless location systems and method
US7403108B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 23, 2006 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Sep 30, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/029
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for tracking and locating wireless tags by a wireless location system in limited and well defined areas that provides for differentiation between the well defined areas comprises transmitting identifying area information by short range transmitters, at least one short range transmitter positioned in the proximity of an entry and exit point of each well defined area. The wireless tags receive the identifying area information when in coverage range of one of the short range transmitters. The wireless tags will transmit the identifying information in the tag message. The transmission will include the last identifying information received and accepted by the wireless tag. A plurality of location receivers and/or access points are installed in or in the proximity of the well defined areas for locating the wireless tags.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.