Idle or Connected Mode Mobility Call Flow
This section describes the Idle or Connected Mode Mobility call flow.

Step |
Description |
---|---|
1 |
The UE sends a Registration Trigger. |
2 |
The UE sends a Registration Request to the RAN. |
3 |
The RAN performs an AMF selection. |
4 |
The RAN sends a Registration Request to the AMF. |
5 |
The AMF sends a Context Request or Response message to the MME. |
6 |
The AMF sends a UeContextTransfer Request or Response to the Old AMF. |
7 |
The AMF sends the Context Acknowledgement message to the MME. |
8 |
The AMF sends an Authentication or Security message to the UE. |
9 |
The AMF sends the Identity Request or Response message to the UE. |