Create Bearer Procedure Call Flow

This section describes the create bearer procedure call flow.

Create Bearer Procedure Call Flow
Create Bearer Procedure Call Flow Description

Step

Description

1

PGW receives IP-CAN session modification request from PCRF.

PGW creates the Create Bearer Request message and sends it to SGW (cnSGW-C).

2

SGW (cnSGW-C) forwards the Create Bearer Request message request to MME.

3

MME generates a Create Bearer Response message towards SGW (cnSGW-C).

If bearer setup fails, then the RAN/Cause list included in the response.

4

SGW (cnSGW-C) forwards the Create Bearer Response message to PGW.

It includes RAN/NAS Cause Code list.