Method for estimating propagation loss, system for estimating propagation loss, device for estimating propagation loss, and program for estimating propagation loss

The method, system, device, and program efficiently estimate penetration loss by using a 3D CAD model and distance calculations to derive propagation loss, addressing the challenge of increased computation time in complex environments.

JP7882339B2Active Publication Date: 2026-06-30NIPPON TELEGRAPH & TELEPHONE CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
NIPPON TELEGRAPH & TELEPHONE CORP
Filing Date
2022-10-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing methods for estimating penetration loss of radio waves in complex environments with varying material compositions, such as buildings and vegetation, require longer computation times as the number of face elements increases, compromising accuracy.

Method used

A method, system, device, and program that estimate penetration loss by creating an outdoor 3D CAD model, calculating penetration points, outdoor and indoor distances, and applying specific loss formulas to derive propagation loss without increasing computation time.

Benefits of technology

Accurately estimates penetration loss characteristics with high precision while maintaining computational efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present 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 propagation loss estimation method involves calculating a propagation loss of a radio wave, which enters a feature, for each combination of base stations and terminals. In addition, the propagation loss estimation method involves: creating an outdoor 3D CAD model; reading, from the outdoor 3D CAD model, data pertaining to materials composing the feature, the transmission characteristics of the materials, and the existence ratio of each of the materials in the feature; calculating an entrance point from the location relationship between the terminal and the feature; calculating the outdoor distance from the locations of the base station and the entrance point; calculating the indoor distance from the locations of the entrance point and a terminal; calculating an outdoor propagation loss on the basis of the outdoor distance; calculating an indoor propagation loss on the basis of the indoor distance; calculating an entrance loss on the basis of the materials composing the feature, the existence ratio, and the transmission characteristics; and calculating the propagation loss on the basis of the outdoor propagation loss, the indoor propagation loss, and the entrance loss.
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