Department of Manufacturing and Civil Engineering, Norwegian University of Science and Technology (NTNU), 2815 Gjøvik, Norway.
Department of Electronic Systems, Norwegian University of Science and Technology (NTNU), 2815 Gjøvik, Norway.
Sensors (Basel). 2021 Mar 12;21(6):2015. doi: 10.3390/s21062015.
Wireless data traffic has increased significantly due to the rapid growth of smart terminals and evolving real-time technologies. With the dramatic growth of data traffic, the existing cellular networks including Fifth-Generation (5G) networks cannot fully meet the increasingly rising data rate requirements. The Sixth-Generation (6G) mobile network is expected to achieve the high data rate requirements of new transmission technologies and spectrum. This paper presents the radio channel measurements to study the channel characteristics of 6G networks in the 107-109 GHz band in three different industrial environments. The path loss, K-factor, and time dispersion parameters are investigated. Two popular path loss models for indoor environments, the close-in free space reference distance (CI) and floating intercept (FI), are used to examine the path loss. The mean excess delay (MED) and root mean squared delay spread (RMSDS) are used to investigate the time dispersion of the channel. The path loss results show that the CI and FI models fit the measured data well in all industrial settings with a path loss exponent (PLE) of 1.6-2. The results of the K-factor show that the high value in industrial environments at the sub-6 GHz band still holds well in our measured environments at a high frequency band above 100 GHz. For the time dispersion parameters, it is found that most of the received signal energy falls in the early delay bins. This work represents a first step to establish the feasibility of using 6G networks operating above 100 GHz for industrial applications.
由于智能终端和实时技术的不断发展，无线数据流量大幅增长。随着数据流量的急剧增长，包括第五代 (5G) 网络在内的现有蜂窝网络无法完全满足日益增长的数据速率要求。第六代 (6G) 移动网络有望满足新传输技术和频谱的高数据速率要求。本文通过无线电通道测量，研究了在三种不同工业环境下 107-109GHz 频段的 6G 网络的信道特性。研究了路径损耗、K 因子和时间色散参数。本文采用两种用于室内环境的流行路径损耗模型，即近场自由空间参考距离 (CI) 和浮动截距 (FI)，来检验路径损耗。采用平均附加时延 (MED) 和均方根时延扩展 (RMSDS) 来研究信道的时间色散。路径损耗结果表明，CI 和 FI 模型在所有工业环境中都能很好地拟合测量数据，其路径损耗指数 (PLE) 在 1.6-2 之间。K 因子的结果表明，在亚 6GHz 频段的工业环境中，高 K 因子值在我们在 100GHz 以上高频段测量的环境中仍然适用。对于时间色散参数，研究发现大多数接收信号能量都集中在早期延迟箱中。这项工作是在 100GHz 以上频段上使用 6G 网络进行工业应用的可行性研究的第一步。
