specified from Rel-15 in
TS 23.501, clause 5.9.6
A DNN is equivalent to an APN
. Both identifiers have an equivalent meaning and carry the same information.
The DNN may be used e.g. to:
Select a SMF and UPF(s) for a PDU Session.
Select N6 interface(s) for a PDU Session.
Determine policies to apply to this PDU Session.
specified from Rel-12 in
TS 36.331, clause 6.3.2
The DRB-Identity E-UTRA Radio Resource Control information element is used to identify a Data Radio Bearer used by a UE.