Page 512 - 5G Basics - Core Network Aspects

1 Core network aspects

Service control functions

C-RACF A-RACF NACF

Home network
Service control functions
Visited network
C-MMCF A-MMCF
m4
NACF A-RACF C-RACF
Core transport functions Access transport functions
m3
A-MMCF C-MMCF

UE Access transport functions Core transport functions
Y.2018(09)_FI.8

Figure I.8 – Roaming architecture for host-based mobility using m3 and m4

Figure I.9 shows a roaming architecture when a host-based mobility management protocol is considered
while using the interfaces between UE and the A-MMCF in the visited network, between the A-MMCF and
the C-MMCF in the visited network, and between the C-MMCF in the visited network and the C-MMCF in the
home network.

Service control functions

C-RACF A-RACF NACF

Home network
Service control functions
Visited network
C-MMCF A-MMCF
m4
NACF A-RACF C-RACF
Core transport functions Access transport functions
m1
m2 A-MMCF C-MMCF

UE Access transport functions Core transport functions
Y.2018(09)_FI.9

Figure I.9 – Roaming architecture for host-based mobility using m1, m2 and m4

502