Article

Frequency Dependency of Path Loss Between Different Floors in An Indoor Office Environment at UHF and SHF Bands

Authors:
Motoharu Sasaki at Nippon Telegraph and Telephone
Motoharu Sasaki
Minoru INOMATA
Minoru INOMATA
Minoru INOMATA
  • This person is not on ResearchGate, or hasn't claimed this research yet.
Wataru YAMADA
Wataru YAMADA
Wataru YAMADA
  • This person is not on ResearchGate, or hasn't claimed this research yet.
Naoki Kita at Nippon Telegraph and Telephone
Naoki Kita
Show all 8 authorsHide
Download citation
To read the full-text of this research, you can request a copy directly from the authors.

Abstract

This paper describes analytical results obtained for floor penetration loss characteristics and their frequency dependency by measurements in multiple frequency bands, including those above 6 GHz, in an indoor office environment. Measurement and analysis results confirm that the floor penetration loss depends on two dominant components: the transmission path through floors, and the path traveling through the outside building. We also clarify that these dominant paths have different path loss characteristics and frequency dependency. The transmission path through floors rapidly attenuates with large inter-floor offsets and in high frequency bands. On the other hand, the path traveling through outside of the building attenuates monotonically as the frequency increases. Therefore, the transmission path is dominant at short inter-floor offsets and low frequencies, and the path traveling through the outside is dominant at high number of floors or high frequency. Finally, we clarify that the floor penetration loss depends on the frequency dependency of the dominant path on the basis of the path loss characteristics of each dominant path.

No full-text available

Request Full-text Paper PDF

To read the full-text of this research,
you can request a copy directly from the authors.

... One set up covered three frequency bands: 6, 10, and 18 GHz, and the second set up five different frequency bands: 0.8, 2.2, 4.7, 26.4, 37.1, and 66.5 GHz. Figure 1 shows two of these setups which cover the frequency ranges from 0.8 to 66.5 GHz (Sasaki et al., 2015;Sasaki et al., 2016;Sasaki et al., 2017a;Sasaki et al., 2017b;Sasaki et al., 2018;Sasaki et al., 2018a;Sasaki et al., 2018b) . ...
Radio propagation measurements and modeling for standardization of the site general path loss model in International Telecommunications Union recommendations for 5G wireless networks
Article
Full-text available
The International Telecommunications Union Radiocommunication Sector (ITU‐R) Study Group 3 identified the need for a number of radio channel models in anticipation of the World Radiocommunications Conference in 2019 when the frequency allocation for 5G will be discussed. In response to the call for propagation path loss models, members of the study group carried out measurements in the frequency bands between 0.8 GHz up to 73 GHz in urban low‐rise and urban high‐rise as well as suburban environments. The data were subsequently merged to generate site general path loss models. The paper presents an overview of the radio channel measurements, the measured environments, the data analysis, and the approach for the derivation of the path loss model adopted in Recommendation ITU‐R P.1411‐10 (2019‐08).
View
Mechanisms Governing Propagation Between Different Floors in Buildings
Article
  • Jul 1993
The potential implementation of wireless radio local area networks (LANs) and personal communication services inside buildings requires a thorough understanding of signal propagation within buildings. In this work the authors develop a theory which explains propagation between a transmitter and a receiver located on different floors of a building. Depending on the structure of the building and the location of the antennas, either direct ray propagation through floors or diffraction outside the building will determine the propagation characteristics and range dependence of the signal sector average as the number of floors between the transmitter and the receiver is increased
View
DOCOMO 5G White Paper, 5G Radio Access: Requirements, Concept and Technologies
  • Ntt
  • Inc Docomo
NTT DOCOMO, INC., "DOCOMO 5G White Paper, 5G Radio Access: Requirements, Concept and Technologies," July, 2014.
5G Channel Model for bands up to 100 GHz (v2.0)
  • Mar 2016
  • Aalto University
Aalto University, et al., "5G Channel Model for bands up to 100 GHz (v2.0)," March 2016 (http://www.5gworkshops.com/5GCM.html).
  • Jan 2015
  • 2040-2041
  • Rec
  • Itu-R P
Rec. ITU-R P.2040-1, ITU-R Recommendation, vol.1, P Series, ITU, Geneva, 2015.
UHF-band radio propagation characteristics within large buildings
  • M Kaji
M. Kaji, "UHF-band radio propagation characteristics within large buildings," IEICE Trans. Commun. (Japanese Edition), vol.J70-B, no.10, pp.1200-1209, Oct. 1987.
A study of co-channel reuse between different floors based on indoor propagation characteristics at 2GHz
  • K Hamabe
  • T Kanai
K. Hamabe and T. Kanai, "A study of co-channel reuse between different floors based on indoor propagation characteristics at 2 GHz," IEICE Technical Report, AP90-110, Jan. 1991 (in Japanese).
Measurement of radio wave propagation in a Japanese house at 5GHz
  • T Sakata
T. Sakata, et al., "Measurement of radio wave propagation in a Japanese house at 5 GHz," IEICE Technical Report, AP2006-13, May 2006 (in Japanese).
Propagation by diffraction
  • Rec
  • Itu-R P
Rec. ITU-R P.526-11, "Propagation by diffraction," ITU-R Recommendations, vol.11, P Series, ITU, Geneva, 2009.
Path Loss Characteristics between different floors from 0.8 to 37GHz in indoor office environments
  • M Sasaki
M. Sasaki, et al., "Path Loss Characteristics between different floors from 0.8 to 37 GHz in indoor office environments," IEICE Proc. 2016 International Symposium on Antennas and Propagation (ISAP2016), Okinawa, Japan, Oct. 2016.
5G Channel Model for bands up to 100GHz
  • Aalto University