Sub-terahertz propagation characteristics up to 150 GHz for 6G mobile communication systems
Minoru Inomata, Wataru Yamada, Nobuaki Kuno, Motoharu Sasaki, Koshiro Kitao, Mitsuki Nakamura, Takahiro Tomie, Yasuhiro Oda
Abstract
Abstract Extreme-high-speed communication exceeding 100 Gbps is one requirement for 6G. To satisfy extreme-high-speed-communication, one solution is to utilize terahertz bands above 100 GHz. To determine the new radio-interface technologies and service frequency bands for 6G, terahertz propagation characteristics above 100 GHz need to be understood. In this paper, we introduce our new radio-network topology for 6G and then show the frequency dependency of key propagation phenomena such as the characteristics of path loss in an urban environment, human blockage, and scattering from a rough building surface up to 150 GHz. Human blockage loss increases and the scattering is more diffused as the frequency increases. In the path-loss characteristics, it was found that path-loss frequency dependency is stronger than that given by conventional path-loss model because of scattering effects from a rough building surface.