hSMF Modify Session Procedure

This section provides details about the modify session procedure for hSMF.

hSMF Modify Session Call Flow
hSMF Modify Session Call Flow Description

Step

Description

1

The UE request reaches the hSMF from the vSMF.

2

If any hPCF trigger criteria is met, the hSMF sends an update request to the hPCF.

3

The hSMF responds to the UE request and handles any exceptions.

4

The vSMF notifies the CHF of any charging triggers for the changes applied to the UPF.

5

If there are changes to the UPF due to the modification requested by the UE and accepted by the network, for example, addition or deletion of flows, the vSMF updates the UPF with these changes.

6

The UE request to update the PDU session reaches the hSMF from the vSMF..

7

If there are changes to the UPF due to the modification requested by the UE and accepted by the network, for example, addition or deletion of flows, the vSMF updates the UPF with these changes.

8

The vSMF notifies and updates the CHF of any charging triggers for the changes applied to the UPF.

9

If there are changes to the UPF due to the modification requested by the UE and accepted by the network, for example, addition or deletion of flows, the vSMF updates the UPF with these changes.