System and method for clock distribution and synchronization and radio location
US7499423B1 · kind B1 · utility
8Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2004 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Dec 8, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0008
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for locating a client in a wireless network. The system includes at least three access points. Each access point is adapted to wirelessly communicate with a client having a location using packeted data, be placed in wired data communication within a selected data network; and to share a common precise time reference using the selected data network. The system further includes a switch adapted to translate the relative position of the access points based on a shared common precise time reference and to calculate the location of the client based on a transmission from the client.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.