Polling for transmission power control
US6594251B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1999 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jul 6, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for providing enhanced subscriber unit power control in a point to multipoint communication system are provided. A central access point may send unsolicited grants of transmission time to individual subscriber units. The subscriber units use the granted transmission time to transmit upstream to the central access point for the purpose of having their output power level measured and regulated. By issuing the unsolicited grants sufficiently frequently, the central access point may maintain optimal subscriber unit transmitter power level. The power control features are particularly useful in fading environments such as found in a wireless system, especially when subscriber units do not transmit data upstream sufficiently frequently for power control to be based on measured power of data transmissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.