Patent ID: 6021316
Filing Date: 2000-02-01
Classification: H04W

Abstract:
A method for determining path attenuation of radio waves in a radio system,in which method 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, characterizedby 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, andby 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.