Method and apparatus for adjusting the power of a transmitter
US5003619A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1989 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Jan 31, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The initial transmission (108) from one subscriber to another subscriber is transmitted at full power. The receiving unit measures the received signal strength and returns a code (118) representing this value in a reply message (114), which is also transmitted at full power. The signal strength of the reply message is determined and may be sent to the replying subscriber unit in a subsequent transmission (122), which may now be accomplished at a reduced power level. Thereafter, both subscribers may modify their respective transmitter power levels during subsequent transmission to minimize battery consumption and maximize the operational life of the subscriber unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.