Sending the New GUTI to UE Call Flow
This section describes the Sending the New GUTI to UE call flow.
Note | The newly allocated GUTI value is sent to the UE using the Configuration Update Command message. The allocation of a new GUTI is possible after the Service Request procedure is complete. |
The following call flow describes the 5G GUTI reallocation during the Service Request procedure.

Step | Description |
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1 |
The UE sends the Service Request procedure to the AMF to perform both or one of the following:
|
2 |
After the Service Request procedure is complete, and the AMF is configured to reallocate a new GUTI, then the new GUTI is allocated and sent in the Configuration Update Command message to UE. |
3 |
The UE acknowledges the new GUTI by sending the Configuration Update Acknowledgment message. |