Page 510 - 5G Basics - Core Network Aspects

1 Core network aspects

Figure I.4 shows a roaming architecture when a network-based mobility management protocol is considered
while using the direct interface between the A-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
NACF A-RACF C-RACF
Core transport functions Access transport functions
m1
A-MMCF C-MMCF

UE Access transport functions Core transport functions
Y.2018(09)_FI.4

Figure I.4 – Roaming architecture for network-based mobility using m1

Figure I.5 shows a roaming architecture when a network-based mobility management protocol is considered
while using the interfaces 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

A-MMCF C-MMCF
m1

UE Access transport functions Core transport functions
Y.2018(09)_FI.5

Figure I.5 – Roaming architecture for network-based mobility using m1 and m4

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