UE-Requested PDU Session Modification Call Flow
This section describes the call flow of the UE-requested PDU session modification.

Step | Description | ||
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1 |
The UE sends an ‘Always-on PDU Session Requested’ IE in the PDU Session Modification Request message. |
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2 |
The SMF checks the DNN profile to determine whether the “always-on” support is enabled. |
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3 |
The SMF includes an ‘Always-on PDU Session Indication’ in the PDU Session Modification Command when any one of the following is true:
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4 |
The SMF does not include an ‘Always-on PDU Session Indication’ only when both these conditions are true:
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