PROPAGATION LOSS ESTIMATION METHOD, PROPAGATION LOSS ESTIMATION SYSTEM, PROPAGATION LOSS ESTIMATION DEVICE, AND PROPAGATION LOSS ESTIMATION PROGRAM

WIPO Patent Application WO/2024/089847

A1

This disclosure relates to a propagation loss estimation method, a propagation loss estimation system, a propagation loss estimation device, and a propagation loss estimation program. This system is a propagation loss estimation method for calculating an outdoor propagation loss of a radio wave for each combination of a base station and a terminal. The propagation loss estimation method comprises creating an outdoor 3D CAD model, extracting a profile of data relating to terrain and clutter between the base station and the terminal from the outdoor 3D CAD model, calculating a virtual diffraction edge on the basis of the base station, the terminal, and the profile, and performing diffraction loss calculation for a radio wave passing through the virtual diffraction edge. Moreover, the virtual diffraction edge is an intersection between a straight line that has the maximum gradient when the base station is set to a start point and each point on the profile is set to an end point and a straight line that has the maximum gradient when the terminal is set to a start point and each point on the profile is set to an end point.

INOMATA MINORU (JP)
YAMADA WATARU (JP)
KUNO NOBUAKI (JP)

PCT/JP2022/040204

May 02, 2024

October 27, 2022

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NIPPON TELEGRAPH & TELEPHONE (JP)

H04W16/18

JP2014120990A	2014-06-30
JP2021150870A	2021-09-27
JPH09153867A	1997-06-10

TAKADA, TAKAHASHI & PARTNERS (JP)

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