5GMED Seamless Connectivity for Digital Trains. - Jad Nasreddine; Juan Agusti; Philippe Veyssiere; Paul Caranton; Nuria Trujillo Quijada; Pascal Deliège; Luca Petrucci; Nathan Sanchiz-Viel; Jean-Emmanuel Deschaud; Judit Bastida; José López Luque; Francisco Vázquez Gallego; et al. (VTC2023-Spring, 2023)