16.1.5 IP address allocation

16.1.4B User plane

16.1.6 Bearer model for PDN connectivity service with GTP based S2a

16.1.7 Access Network information reporting in case of a TWAN Access

16.1.4 Protocol Stacks

16.1.4A Control Plane

16.1.3 Reference points

16.1.1 Architecture

16.1.2 High level functions

13 Information Storage