Method and apparatus for testing digital channels in a wireless communication system
US6917916B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2001 |
| Grant date | Jul 12, 2005 |
| Priority date | — |
| Expiry date | Dec 8, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a digital channel of a digital wireless communication system including at least one mobile station, at least one base transceiver station in communication with the mobile station, a transcoder configured to provide a signal conversion between vocoder frames and pulse code modulation, and a mobile switching center for interconnecting the digital wireless communication system to a public switched telephone network, a method and apparatus for determining a fault in the digital channel is disclosed. The method includes generating a first set of vocoder input parameters from a speech input signal, and generating a second set of vocoder input parameters from an output signal substantially equivalent to the speech input signal as it is received at a mobile station via the digital channel. The method further includes calculating a metric based on the first and the second set of vocoder input parameters, and subsequently determining a fault in the digital channel using the metric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.