Cisco Cisco Packet Data Gateway (PDG) Guía Para Resolver Problemas
Gx Interface Support
Rel. 7 Gx Interface ▀
Cisco ASR 5000 Series Enhanced Feature Configuration Guide ▄
OL-22983-01
3GPP TS 29.212 V9.1.0 (2009-12): 3rd Generation Partnership Project; Technical Specification Group Core Network
and Terminals; Policy and Charging Control over Gx reference point (Release 9).
and Terminals; Policy and Charging Control over Gx reference point (Release 9).
Feature Overview
The Volume Reporting over Gx feature provides PCRF the capability to make real-time decisions based on the data
usage by subscribers.
usage by subscribers.
Important:
Volume reporting over Gx is applicable only for volume quota.
Important:
Only total data usage reporting is supported. Uplink/Downlink level reporting is not supported in this
release.
Important:
The PCEF only reports the accumulated usage since the last report for usage monitoring and not from
the beginning.
Important:
If the usage threshold is set to zero (infinite threshold), no further threshold events will be generated
by PCEF, but monitoring of usage will continue and be reported at the end of the session.
Important:
Usage reporting on Bearer termination is not supported.
The following steps explain how Volume Reporting over Gx works:
1. PCEF after receiving the message from PCRF parses the usage monitoring related AVPs, and sends the
information to IMSA.
2. IMSA updates the information to ECS.
3. Once the ECS is updated with the usage monitoring information from PCRF, the PCEF (ECS) starts tracking the
3. Once the ECS is updated with the usage monitoring information from PCRF, the PCEF (ECS) starts tracking the
data usage.
4. For session-level monitoring, the ECS maintains the amount of data usage.
5. For PCC rule monitoring, usage is monitored with the monitoring key as the unique identifier. Each node
5. For PCC rule monitoring, usage is monitored with the monitoring key as the unique identifier. Each node
maintains the usage information per monitoring key. When the data traffic is passed, the usage is checked
against the usage threshold values and reported as described in the Usage Reporting section.
against the usage threshold values and reported as described in the Usage Reporting section.
6. The PCEF continues to track data usage after the threshold is reached and before a new threshold is provided by
the PCRF. If a new usage threshold is not provided by the PCRF in the acknowledgement of an IP-CAN
Session modification where its usage was reported, then usage monitoring does not continue in the PCEF for
that IP CAN session.
Session modification where its usage was reported, then usage monitoring does not continue in the PCEF for
that IP CAN session.
Usage Monitoring
Important:
In this release, the Usage-Monitoring-Informtion AVP is expected to be present without a new
threshold to disable the usage monitoring after usage reporting when the threshold is breached. If no Usage-Monitoring-