Performing power control in a mobile communications system
US7110785B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2000 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Sep 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/241
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mobile communications system includes base stations and mobile units. A power control scheme is provided in which a mobile unit can enter into a discontinuous transmission (DTX) mode. During DTX mode, the mobile unit is not transmitting traffic channels that can be monitored to determine frame errors so that the target ratio of energy per bit to noise spectral density (target Eb/No) can be adjusted. Instead, the base station monitors bit errors of bits in a pilot channel communicated by the mobile unit during DTX mode. Using this technique, the target Eb/No can be adjusted even when the mobile unit is not transmitting traffic channels, so that outer-loop power control can be performed. A number of mechanisms can also be used to detect when a mobile unit has entered DTX mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.