5G in the 3.8-4.2 GHz Band: Coexistence with Fixed Satellite Service Earth Stations In-Band and IMT-2020 in Adjacent Band.

This paper analyses the coexistence of low and medium power 5G Base Stations (BSs) operating in the 3.84.2 GHz to provide local area network connectivity with Fixed Satellite Service Earth stations in the same band as well as IMT-2020/5G services in the adjacent band below 3.8 GHz. This work follows the developments of the current regulatory discussion in Europe, providing an analysis of how different configurations for 5G BSs operating in the 3.8-4.2 GHz band, including Active Antenna System (AAS) BSs with increased radiated power and non-AAS BSs, can impact the resulting separation distances required to coexist with incumbent services. It is observed that AAS BSs operating with considerably higher power than nonAAS BSs lead to similar coexistence conditions.