Manual

SaMOG Gateway Overview
▀ How the SaMOG Gateway Works
▄ SaMOG Administration Guide, StarOS Release 17
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Figure 6. P-GW Initiated Session Disconnection
Table 6. P-GW Initiated Session Disconnection
Step
Description
1.
The P-GW sends a Delete Bearer Request message to the SaMOG Gateway’s CGW service as part of session deletion.
2.
The CGW service returns a Delete Bearer Response message to the P-GW and marks the session for deletion.
3.
The CGW service sends a Binding Revocation Indication message to the WLC.
4.
The WLC sends a Binding Revocation Acknowledgement message to the CGW service with applicable cause codes. The
CGW service marks the session as deleted upon receiving the message.
5.
The CGW service signals the MRME service to delete the call.
6.
The MRME service sends a RADIUS Disconnect message to the WLC to initiate RADIUS Accounting StopRelease.
7.
The WLC sends a RADIUS Accounting Stop message to the MRME service.
8.
The MRME service, functioning as an AAA proxy, sends a Session Termination Request (STR) message over the STa
interface to the HSS.
9.
The HSS acknowledges the session termination by returning a Session Termination Answer (STA) to the MRME service.
10.
The MRME service sends a RADIUS Accounting Stop Response message to the WLC and clears the call at the SaMOG
Gateway.