Method and apparatus for location tracking in a multi-path environment
US7164929B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2004 |
| Grant date | Jan 16, 2007 |
| Priority date | — |
| Expiry date | Oct 1, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method of calibrating a wireless tracking system and a method of tracking a mobile unit in a wireless local area network. The method includes providing at least one calibration signal using a mobile unit having a first plurality of antennae while the mobile unit is proximate at least one predetermined location and receiving a plurality of signals at a second plurality of antennae in response to providing the at least one calibration signal. The method also includes determining a portion of a transmission matrix using the plurality of received signals and the at least one calibration signal and associating the portion of the transmission matrix with the predetermined location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.