Idle or Connected Mode Mobility Call Flow

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

Idle or Connected Mode Mobility Call Flow
Idle or Connected Mode Mobility Call Flow Description

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.