 5G is intended to support higher mobility, and to improve network reliability, with a packet loss rate of around 10-5 valid to offer safety critical services [19-21]. In WRC-19 it was determined that 5G will operate, among other options, in millimeter wave (mm-wave) spectrum ranging from 24 to 300 GHz [14]. For mm- wave-based V2X communications, some interesting frequency portions have been postulated: 60 GHz, 79 GHz, and low-terahertz frequencies at 300 GHz and beyond [19, 20, 24, 28]. Standardization of NR-V2X will expand LTE V2X with massive deployments of connected vehicles [19, 20, 24]. At present, the mm-wave band is considered for vehicle-to-vehicle (V2V, which enables direct connectivity among vehicles, mainly related with critical driving context information exchange) or V2I communications, required for autonomous L. Azpilicueta et al. Table 7.1 5G satellite network use cases and scenarios by 3GPP [31, ,32] Description Satellite and terrestrial network roaming capabilities, in order to provide global coverage, in the case terrestrial-based network coverage fails Satellite overlay for multicast and broadcast, in order to provide delivery of global video services Delivery of IoT services with global coverage. Use of low-orbit satellites for efficient radio connections Satellite use in temporary way for different services (e.g., mail, messaging, or voice) Optimized routing via satellite links to provide enhanced connectivity, via independent UL/DL links within the 5G terrestrial network and the satellite network Multiregional/multinational satellite service provision, enabling radio access connectivity, including neutral regions Capability to provide overlay services of low-orbit satellites to terrestrial links Possibility of non-direct connectivity to the satellite network, aided by relay units Transport connectivity (Backhaul/Midhaul) between radio stations and the core network Backhaul provision for services on the move (e.g., trains, ships, etc.) to the core network from moving radio stations Interoper