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Satellite as a virtual edge application for 5G service continuity in mobility

Mismatch in technology and design principles made satellite-terrestrial convergence quite challenging over the years, with satellite acting as either provider of raw supplementary capacity or a gap-filler in the terrestrial networks. Furthermore, the use of satellite communications (SatCom) for IP based applications typically require the introduction of Performance Enhancing Proxy (PEP) agents for performance optimization, introducing additional technological barriers. Recent 5G specifications fostered network softwarization and service-based architectures. In this context, it is possible to consider the integration of the satellite from a different perspective, as a software-based virtual service. This allows to review the role of satellite from a "different network technology to integrate" to an "advanced application to deploy". This transformation is discussed in the paper, considering the reference use-case of 5G connectivity on vehicles. We describe how mobile applications can benefit of efficient and seamless service, leveraging on SatCom capabilities.