Mucchi, LorenzoJayousi, SaraCaputo, StefanoPanayırcı, ErdalShahabuddin, ShahriarBechtold, JonathanMorales, Ivan2023-10-192023-10-192021492644-125Xhttps://doi.org/10.1109/OJCOMS.2021.3103735https://hdl.handle.net/20.500.12469/5278The sixth generation (6G) of mobile network will be composed by different nodes, from macro-devices (satellite) to nano-devices (sensors inside the human body), providing a full connectivity fabric all around us. These heterogeneous nodes constitute an ultra dense network managing tons of information, often very sensitive. To trust the services provided by such network, security is a mandatory feature by design. In this scenario, physical-layer security (PLS) can act as a first line of defense, providing security even to low-resourced nodes in different environments. This paper discusses challenges, solutions and visions of PLS in beyond-5G networks.eninfo:eu-repo/semantics/openAccessPilot Spoofing AttackLight Communication-SystemsMassive MimoSpatial ModulationPilot Spoofing AttackWireless CommunicationLight Communication-SystemsMassive MimoSecrecy AnalysisSpatial Modulation6G mobile communicationAuthenticationSatellitesWireless CommunicationFabricsSensorsSecrecy AnalysisSecurityTransmissionCommunication networksAuthentication6GPerformancephysical-layer securityTransmissionMIMOIRSPerformancevisible light communicationsChallengesauthenticationChallengeskey distributionArticle190119142WOS:00068647910000110.1109/OJCOMS.2021.31037352-s2.0-85118401734Q1