Communication device locating system
US7536188B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2004 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Dec 31, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for determining the vicinity of a communication device within a communication network is provided. Individual communication devices are provided with an active identification reader capable of reporting information concerning identified passive identification tags to a location server. At least some passive identification tags have fixed or known locations, allowing a communication device capable of reading such a passive identification1 tag to be determined to be within a particular vicinity or area. Communication devices may also be provided with passive identification tags to allow other active identification readers to determine whether the communication device is in their vicinity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.