Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do, South Korea.
Chosun University, Dong-gu, Gwangju, Jeollanam-do, South Korea.
PLoS One. 2023 Mar 28;18(3):e0282781. doi: 10.1371/journal.pone.0282781. eCollection 2023.
Research on path loss in indoor stairwells for 5G networks is currently insufficient. However, the study of path loss in indoor staircases is essential for managing network traffic quality under typical and emergency conditions and for localization purpose. This study investigated radio propagation on a staircase where a wall separated the stairs from free space. A horn and an omnidirectional antenna were used to determine path loss. The measured path loss evaluated the close-in-free-space reference distance, alpha-beta model, close-in-free-space reference distance with frequency weighting, and alpha-beta-gamma model. These four models exhibited good compatibility with the measured average path loss. However, comparing the path loss distributions of the projected models revealed that the alpha-beta model exhibited 1.29 dB and 6.48 dB for respectively, at 3.7 GHz and 28 GHz bands. Furthermore, the path loss standard deviations obtained in this study were smaller than those reported in previous studies.
5G 网络室内楼梯路径损耗研究目前还不够充分。然而，研究室内楼梯的路径损耗对于管理典型和紧急情况下的网络流量质量以及定位目的至关重要。本研究调查了在楼梯间使用墙壁将楼梯与自由空间隔开的情况下的无线电传播。使用喇叭天线和全向天线来确定路径损耗。测量的路径损耗评估了近场自由空间参考距离、α-β模型、具有频率加权的近场自由空间参考距离和α-β-γ模型。这四个模型与测量的平均路径损耗具有良好的兼容性。然而，比较投影模型的路径损耗分布表明，在 3.7 GHz 和 28 GHz 频段，α-β 模型分别表现出 1.29 dB 和 6.48 dB 的差异。此外，本研究获得的路径损耗标准偏差小于之前研究报告的标准偏差。
