5G: When network responds to UE with the registration accept/service accept even after failing the authentication ?

Question

In LTE network, UE registers with network using attach procedure. MME supports couple of states such as EMM-REGISTERED, EMM-DEREGISTERED to maintain the status of UE registration. I want to know that how network registration is being implemented at 5G core ? Is it as same as LTE network EMM states ?

Answer 1

I guess when an UE tries to register the network for emergency services, network can ignore authentication failure or skip authentication procedure completely and proceed with successful registration. I will update my answer later if I find something need to be corrected.