NAS-MM: The NAS protocol for MM functionality supports registration management functionality,
connection management functionality and user plane connection activation and deactivation. It is also
responsible of ciphering and integrity protection of NAS signalling. 5G NAS protocol is defined in
5G-AN Protocol layer: This set of protocols/layers depends on the 5G-AN. In the case of NG-RAN, the
radio protocol between the UE and the NG-RAN node (eNodeB or gNodeB) is specified in TS 36.300
and TS 38.300
. In the case of non-3GPP access, see clause 8.2.4.