ellites in non-geostationary satellite orbit (NGSO). L. Azpilicueta et al. For the deployment of the 5G satellite segment, the 3GPP [37] presented three options for orbits [31]: Geostationary satellites (GEO): Provision of full Earth coverage between 70°N and 70°S by a constellation composed of one to three satellites: propagation delay ranging from 120 to 140 ms. Medium Earth orbit (MEO): Providing full Earth coverage by a constellation composed from 10 up to 12 satellites: propagation delay ranging from 27 to 43 Low Earth orbits (LEO): Continuous coverage by satellite network constellation composed of 50 up to 100 satellites: propagation delay ranging from 3 to 15 ms. The 5G satellite options will allow 5G service delivery in areas with impeded provision by the 5G terrestrial segment and also for the services supported by satellite systems [31]. As reported in [35], the 5G satellite segment will complement 5G services, which are delivered especially on road, rail, and waterways as well as in rural regions, where access to 5G terrestrial segment is unavailable [31]. It should be noticed that 5G services provided via 5G satellite segment are not only data and voice communications but also connection provision for IoT/M2M devices, access to broadcasting services, as well as other delay-tolerant services [31]. As noted above and stated in the ITU Network 2030 vision [38], the space- terrestrial integrated network is considered as one of the key enablers in the B5G ecosystem. In this context, the proliferation of satellite networks faces many challenges in terms of integration with other networks or the adoption of new network management schemes according to this dynamic topology [37, 39]. To serve a fully mobile and connected society, 5G/B5G networks must experience remarkable growth in connectivity, density, and volume of data traffic, besides requiring multilevel ultra-densification. Hence, the satellite segment arises as a necessary part of the B5G ecosystem development [37]. B5G/6G systems should be characteriz