REPEL: A Strategic Approach for Defending 5G Control Plane From DDoS Signalling Attacks. - Renato Souza Silva; Carlos Colman Meixner; Rafael S. Guimarães; Thierno Diallo; Borja O. Garcia; Luís F. M. de Moraes; Magnos Martinello (IEEE Trans. Netw. Serv. Manag., 2021)