Method for performing a frequency correction of a wireless device
US7272369B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2005 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Apr 27, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0032
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Frequency correction of a radio module. An estimate is made of the amount of frequency correction needed while applying an original reference frequency. If the frequency correction needed is greater than a pre-determined amount, a large shift frequency correction is performed, including applying a new reference frequency and verifying that the large shift frequency correction is satisfactory. If the large shift frequency correction is unsatisfactory, the original reference frequency is restored. If the frequency correction needed is smaller than a pre-determined amount, a small shift frequency correction is performed, including applying a new reference frequency and updating a total of all frequency corrections made since a stored reference frequency was updated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.