Apparatus and method for improvement of transmission quality in a point-to-multipoint radio transmission system
US6006073A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Nov 10, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2001/0093
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The radio transmission system includes at least one base station (BS1,BS2) and several participant stations (T111, . . . ,T222), in which the radio transmission range (Z1,Z2) belonging to each base station (BS1, BS2) is divided into several sectors (S11, . . . ,S22). The radio transmission system performs an automatic interference analysis in which a test channel is established between each participant station (T111, . . . ,T222) and all those sectors (S11, . . . ,S22) which cause interferences with the concerned participant station. A signal path-attenuation value is determined from the transmission power and received power of the test channel for each signal path between the participant stations (T111, . . . ,T222) and sectors (S11, . . . ,S22) and a carrier signal-to-noise ratio is determined for each participant station (T111, . . . ,T222) from all the signal path attenuation values contributing to it. When this carrier signal-to-noise ratio is below a predetermined threshold, a more robust type of modulation is used for the data signal transmission between the concerned participant station (T111, . . . ,T222) and the sector (S11, . . . ,S22) associated with it and/or the trans…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.