PCF Interaction Status

This feature supports the following status messages for SMF-initiated and PCF-initiated messages:

  • PCF-Interaction Status: ON

    SMF-initiated messages—The SMF continues to initiate the messages towards the PCF whenever the criteria is met.

    PCF-initiated messages—The SMF continues to accept all the messages initiated from the PCF towards the SMF.

  • PCF-Interaction Status: OFF

    SMF-initiated messages—The SMF does not initiate or send the messages towards the PCF whenever the criteria is met. The SMF treats the PCF as if it is not available and continues further actions.

    PCF-initiated messages—There are two messages initiated by the PCF.

    • SmPolicyUpdateNotifyReq: On receiving this message, the SMF sends a 404 error code in response and cleans up the session and does not send the Delete Request to the PCF.

      Note

      The SMF also sends FIVEGSM_CAUSE value as REACTIVATION REQUESTED in the FIVEG_PDU_SESSION_RELEASE_COMMAND to UE for 5G. In case of 4G, the SMF sends cause REACTIVATION REQUESTED in DELETE BEARER REQUEST message to the S-GW.

    • SmPolicyAssociationTerminationReq—On receiving this message, the SMF sends a success response and cleans up the session. As part of this interaction, the SMF sends a Delete Request to the PCF.

      Note

      This is an exception when the PCF-Interaction Status is set to OFF.