Patent ID: 6330439
Filing Date: 2001-12-11
Classification: H04B,H04W

Abstract:
A method for predicting radio-wave propagation loss values of points located in a service area of a base station, wherein the service area is represented by a circle about the base station mapped into a cell grid map and wherein the points includes radial points located on radial lines and missed points out of the radial lines, comprising the step of:(a) calculating radio-wave propagation loss values of points located along with initial and next radial lines based on parameters defined by a user;(b) designating one of initial missed points as a target point, wherein the initial missed points are located within a region of the cell grid map defined by the initial and next radial lines and a circumference of the circle connected between the initial and next radial lines;(c) searching first and second mapping points, wherein the first mapping point is located on an intersection point of a perpendicular line and the initial radial line and the second mapping point is located on an intersection point of a perpendicular line and the next radial line;(d) calculating radio-wave propagation loss values of the first and second mapping points;(e) calculating radio-wave propagation loss value of the target point by using the radio-wave propagation loss values of the first and second mapping points;(f) designating another initial missed point as the target point and repeating said steps (c) to (f) until radio-wave propagation loss values for all the initial missed points are calculated; and(g) designating the next radial line as an initial line and repeating said steps (a) to (g) to calculate the radio-wave propagation loss values of the radial points located on the radial lines and the missed points out of the radial lines.