Patent ID: 8386215

Claim:
A radio propagation modeling method using a ray-tracing method, the radio propagation modeling method comprising: determining a position of a transmitter with respect to an obstacle in a radio propagation modeling area; predicting a shade area, generated by a radio wave output from the transmitter, based on a horizontal linear length of the obstacle; and correcting the shade area considering the thickness of the obstacle, wherein the correcting of the shade area comprises: predicting a propagation path passing each of two corners selected from corners extending in a vertical direction of the obstacle depending on a relative position of the obstacle and the transmitter: calculating a length of a horizontal extended line, extending from a horizontal line based on an angle made between the propagation path and the horizontal extended line at a position where the thickness of the obstacle is half; and correcting the shade area as an extended shade area, generated by a radio wave output from the transmitter and the horizontal extended line.