Encoding mode control method and decoding mode determining apparatus
US6195337A · kind A · utility
15Cited by
17References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1997 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Apr 25, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a digital cellular radio communication system, a base station selects a speech/channel encoding mode based on measurements of the local radio environment. The mobile station determines the selected mode by trial decoding possible modes to find the most probable mode and uses the same mode for transmission to the base station on the return link. The coding gain/loss obtained by this mode switching may be used to adjust the output power of transmitters, thereby reducing the overall interference level in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.