NETWORK SLICE AUTHENTICATION

Apparatuses, methods, and systems are disclosed for network slice authentication. One method includes receiving a registration request message associated with a UE and determining an authentication requirement for a network slice based at least in part on the received registration request. The method includes transmitting an authentication request to a network entity based at least in part on the determined authentication requirement for the network slice and receiving an authentication response from the network entity based at least in part on the transmitted authentication request. The method includes determining, based at least in part on the received authentication response, whether to include the network slice within a set of allowed NSSAI and transmitting a NAS message comprising the allowed NSSAI.