Downlink Data Notification for PGW-initiated procedure with Cloud Native Call Flow
This section describes the DDN for the PGW-initiated procedure with Cloud Native call flow.

Step |
Description |
---|---|
1, 2 |
Enabled trigger-on-pgw-initiated-proc CLI and state of the UE is in IDLE mode. S5-GTP-EP receives the CBR from the PGW and forwards it to the SGW-service pod. SGW-service pod starts a new S-T2 transaction. SGW-service pod sends failure response to the S5-GTP-EP with cause code 110. |
3 |
The T2 transaction which started in step two is completed. A new S-T3 transaction is started for the UE for which DDN is not triggered. SGW-service pod initiates the DDN Request to the theS11-GTP-EP. |
4 |
A new E-T4 transaction is started. S11-GTP-EP forwards the DDN Request to the MME. |
5 |
S11-GTP-EP receives the DDN Response success from the MME. |
6 |
Transaction E-T4 which started in step four is completed. S11-GTP-EP sends the DDN Response success to the SGW-service pod. |
7 |
Transaction T1 which is started in step three is completed. SGW-service pod updates the session to CDL. |