URR Removal and CDR Reporting on Detach Call Flow

This section describes URR Removal and CDR Reporting on Detach call flow.

URR Removal and CDR Reporting on Detach Call Flow
URR Removal and CDR Reporting on Detach Call Flow Description

Step

Description

1

A PDN session is established and URR is enabled for Sx session.

The MME sends the Delete Session Request to the GTPC-EP.

2

The GTPC-EP forwards the S11 Delete Bearer Request to the SGW-service pod.

3

The SGW-service pod sends the Sx Session Modification Request to the PFCP proto.

4

The PFCP proto sends the Sx Session Modification Response to the SGW-service pod with the cause as Request-Accepted.

5

The SGW-service pod sends the S5 Delete Session Request to the GTPC-EP.

6

The GTPC-EP sends the Delete Session Request to the PGW.

7

The PGW sends the Delete Session Response to the GTPC-EP with the cause as Request-Accepted.

8

The GTPC-EP sends the S5 Delete Session Response to the SGW-service pod with the cause as Request-Accepted.

9

The SGW-service pod sends the Sx Session Delete Request to the PFCP proto.

10

The SGW-service pod receives the Sx Session Delete Response from the PFCP proto with the cause as Request-Accepted.

11

The SGW-service pod triggers the CDR generation.

12

The SGW-service pod sends the CDR request to the GTPP-EP.

13

The SGW-service pod sends the Delete Session Response to the GTPC-EP with the cause as Request-Accepted.

14

The GTPC-EP pod forwards the Delete Session Response to the MME with the cause as Request-Accepted.

15

The GTPP-EP sends the CDR ACK to the SGW-service pod.