Site-Specific Measurement and Analysis of Building Entry Loss in High-Rise Buildings Across 1 to 30 GHz

This study investigated a site-specific approach to building entry loss to enable robust mobile wireless access for non-terrestrial networks using high-altitude platform stations and highly efficient fixed wireless access for terrestrial networks. In this study, outdoor-to-indoor propagation measure...

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Main Authors: Shoma Tanaka, Sho Kimura, Ho-Yu Lin, Akihiro Sato, Hideki Omote
Format: Article
Language:English
Published: IEEE 2025-01-01
Series:IEEE Access
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Online Access:https://ieeexplore.ieee.org/document/10980286/
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author Shoma Tanaka
Sho Kimura
Ho-Yu Lin
Akihiro Sato
Hideki Omote
author_facet Shoma Tanaka
Sho Kimura
Ho-Yu Lin
Akihiro Sato
Hideki Omote
author_sort Shoma Tanaka
collection DOAJ
description This study investigated a site-specific approach to building entry loss to enable robust mobile wireless access for non-terrestrial networks using high-altitude platform stations and highly efficient fixed wireless access for terrestrial networks. In this study, outdoor-to-indoor propagation measurements were conducted in two distinct high-rise office buildings. These measurements considered various incident elevation and azimuth angles relative to the building façade and different indoor antenna locations. One set of measurements was performed using a helicopter at 1.47 GHz and 3.35 GHz, and the other set of measurements was conducted along a terrestrial path at 3.35 GHz and 29.3 GHz. Based on the obtained measurement results and geometrical optics theory, we analyzed the site-specific building entry loss, observing the nonmonotonic characteristics with the indoor entry distance. Based on the results, we propose a model that incorporates various parameters, e.g., the locations of the outdoor and indoor stations, as well as the dimensions of the building rooms and windows. Compared with standardized frameworks and existing models, the proposed model effectively characterized the site-specific building entry loss and demonstrated higher predictive accuracy on measured data for frequencies from 1 to 30 GHz.
format Article
id doaj-art-b202abfd1bd549bb938524d12cd276ec
institution Kabale University
issn 2169-3536
language English
publishDate 2025-01-01
publisher IEEE
record_format Article
series IEEE Access
spelling doaj-art-b202abfd1bd549bb938524d12cd276ec2025-08-20T03:49:22ZengIEEEIEEE Access2169-35362025-01-0113813658137610.1109/ACCESS.2025.356573210980286Site-Specific Measurement and Analysis of Building Entry Loss in High-Rise Buildings Across 1 to 30 GHzShoma Tanaka0https://orcid.org/0009-0002-9327-5494Sho Kimura1Ho-Yu Lin2https://orcid.org/0009-0001-8738-5825Akihiro Sato3Hideki Omote4Technology Research Laboratory, SoftBank Corporation, Tokyo, JapanTechnology Research Laboratory, SoftBank Corporation, Tokyo, JapanTechnology Research Laboratory, SoftBank Corporation, Tokyo, JapanTechnology Research Laboratory, SoftBank Corporation, Tokyo, JapanTechnology Research Laboratory, SoftBank Corporation, Tokyo, JapanThis study investigated a site-specific approach to building entry loss to enable robust mobile wireless access for non-terrestrial networks using high-altitude platform stations and highly efficient fixed wireless access for terrestrial networks. In this study, outdoor-to-indoor propagation measurements were conducted in two distinct high-rise office buildings. These measurements considered various incident elevation and azimuth angles relative to the building façade and different indoor antenna locations. One set of measurements was performed using a helicopter at 1.47 GHz and 3.35 GHz, and the other set of measurements was conducted along a terrestrial path at 3.35 GHz and 29.3 GHz. Based on the obtained measurement results and geometrical optics theory, we analyzed the site-specific building entry loss, observing the nonmonotonic characteristics with the indoor entry distance. Based on the results, we propose a model that incorporates various parameters, e.g., the locations of the outdoor and indoor stations, as well as the dimensions of the building rooms and windows. Compared with standardized frameworks and existing models, the proposed model effectively characterized the site-specific building entry loss and demonstrated higher predictive accuracy on measured data for frequencies from 1 to 30 GHz.https://ieeexplore.ieee.org/document/10980286/Building entry losshigh-altitude platform stationmeasurementmillimeter-wavemodelingoutdoor-to-indoor propagation
spellingShingle Shoma Tanaka
Sho Kimura
Ho-Yu Lin
Akihiro Sato
Hideki Omote
Site-Specific Measurement and Analysis of Building Entry Loss in High-Rise Buildings Across 1 to 30 GHz
IEEE Access
Building entry loss
high-altitude platform station
measurement
millimeter-wave
modeling
outdoor-to-indoor propagation
title Site-Specific Measurement and Analysis of Building Entry Loss in High-Rise Buildings Across 1 to 30 GHz
title_full Site-Specific Measurement and Analysis of Building Entry Loss in High-Rise Buildings Across 1 to 30 GHz
title_fullStr Site-Specific Measurement and Analysis of Building Entry Loss in High-Rise Buildings Across 1 to 30 GHz
title_full_unstemmed Site-Specific Measurement and Analysis of Building Entry Loss in High-Rise Buildings Across 1 to 30 GHz
title_short Site-Specific Measurement and Analysis of Building Entry Loss in High-Rise Buildings Across 1 to 30 GHz
title_sort site specific measurement and analysis of building entry loss in high rise buildings across 1 to 30 ghz
topic Building entry loss
high-altitude platform station
measurement
millimeter-wave
modeling
outdoor-to-indoor propagation
url https://ieeexplore.ieee.org/document/10980286/
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AT hoyulin sitespecificmeasurementandanalysisofbuildingentrylossinhighrisebuildingsacross1to30ghz
AT akihirosato sitespecificmeasurementandanalysisofbuildingentrylossinhighrisebuildingsacross1to30ghz
AT hidekiomote sitespecificmeasurementandanalysisofbuildingentrylossinhighrisebuildingsacross1to30ghz