Transmission power control method and transmission power control apparatus in mobile communication system
US6963753B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1999 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Nov 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/42
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention relates to a transmission power control method and transmission power control apparatus in a mobile communication system. The reception quality of a signal (31, 32a, 32b, 41, or 42) transmitted from another mobile station (51 or 52) or base station (21 or 22) is compared with a predetermined control target value such as a signal-to-interference ratio. The comparison result is used for transmission power control on a remote station. If a frame error is detected in a transmitted signal, the control target value is increased by SIRinc. If no frame error is detected, the control target value is decreased by SIRdec. As SIRdec, the product of a target value of a frame error rate and SIRinc is set. With this operation, when a propagation environment such as multibus or moving speed changes, the control target value for transmission power control is changed within a short period of time, and channel quality is maintained constant, thus realizing desired channel quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.