h, and Quality of Service (QoS). Lockheed Martin is working with a satellite company called Omnispace(https://news.lockheedmartin. om/5g-omnispace-agreement). The Lockheed Martin initiative for 5G NTN will make use of Omnispace's 2 GHz S-band spectrum rights. These will be used to deploy the 3GPP standards to enable direct-to-device connectivity and interoperability. This hybrid SATCOM and 5G network can then facilitate the necessary coverage and capacity for applications that need global, seamless communications with high reliability. This may include support for defense, government, and military use as well. According to the SAT5G project from Europe (https://5g-ppp.eu/sat5g/), the four use cases are summarized as follows: Fixed backhaul for inaccessible or hard-to-reach areas Complementary services for areas underserved by TNs Complementary broadband connectivity for edge computing Moving platforms such as ships, trucks, and trains Let us next look at Figure 16.24, which presents the high-level 5G vision of NTN use cases visually. It covers, on one hand, dense urban areas and on the other, isolated and remote scenarios such as connectivity to a ship in the middle of the ocean. 5G and Satellite Communications 5G vision of NTN Integrated/hybrid terrestrial and NTN SDN/NFV-based NTN Multi-beam NTN Network slicing in NTN Internet of Space Things Edge computing-based NTN Cognitive terrestrial-NTN NOMA-based terrestrial-NTN Fixed network backhaul alternative Connectivity alternative Highly distributed networks Aeronautical broadband Mobile network backhaul alternative Mobile network backhaul Isolated connectivity Maritime broadband Remote fixed enterprise Disaster relief Emergency and safety Maritime safety Professional mobile networks Automotive eHealth Urban Rural Remote Isolated Figure 16.24 - High-level vision of 5G and NTN In the next section, in Table 16.2, we tabulate use cases in more detail and provide the corresponding 5G service enabler (https://www.5gamericas.org/5g-and-non-terrestrial networks). Use Cas