Delete Session Procedure Call Flow

This section describes the delete session procedure call flow.

Delete Session Procedure Call Flow
Delete Session Procedure Call Flow Description

Step

Description

1

MME receives an indication of Cancel Location from HSS.

MME creates Delete Session Request message to SGW (cnSGW-C).

It includes RAN/NAS cause code list.

2

SGW (cnSGW-C) forwards the Delete Session Request message request to PGW.

It detects and forwards RAN/NAS cause code list.

3

PGW sends the Delete Session Response message to SGW (cnSGW-C).

PGW receives IP-CAN session modification request from PCEF.

4

SGW (cnSGW-C) generates a Delete Session Response message towards MME.