Method and apparatus for determining path attenuation of radio waves
US6021316A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1998 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Jan 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W16/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for determining path attenuation of radio waves in a radio system, in which at least a two-dimensional vector map describing the environment of a base station is used for determining the coverage area of the base station of the system, and in which the strength of the emission of a transmitter is determined at various points in the environment. The invention is implemented by calculating from the base stations environment described by the vector map a polygon area to which radio waves can propagate both directly and by means of diffraction and reflections, by estimating the strength of the emission of the transmitter at each location point of the transmitter to be examined in the polygon area determined by calculation, and by determining points of the polygon area in advance, storing the determined points in a memory, and reading the stored points from the memory for calculating the polygon area for different location points of the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.