Cisco Cisco Packet Data Gateway (PDG) Guía De Administador
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Gx Interface Support
▀ Rel. 7 Gx Interface
▄ Cisco ASR 5x00 Home Agent Administration Guide
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Important:
In 11.0 and later releases, Rule-Activation-Time / Rule-Deactivation-Time / Revalidation-Time AVP
is successfully parsed only if its value corresponds to current time or a later time than the current IPSG time, else the
AVP and entire message is rejected. In earlier releases the AVP is successfully parsed only if its value corresponds to a
later time than the current IPSG time, else the AVP and entire message is rejected.
AVP and entire message is rejected. In earlier releases the AVP is successfully parsed only if its value corresponds to a
later time than the current IPSG time, else the AVP and entire message is rejected.
Charging Control
Charging Control is the process of associating packets belonging to a SDF to a charging key, and applying online
charging and/or offline charging, as appropriate. Flow-based charging handles differentiated charging of the bearer
usage based on real time analysis of the SDFs. In order to allow for charging control, the information in the PCC rule
identifies the SDF and specifies the parameters for charging control. The PCC rule information may depend on
subscription data.
charging and/or offline charging, as appropriate. Flow-based charging handles differentiated charging of the bearer
usage based on real time analysis of the SDFs. In order to allow for charging control, the information in the PCC rule
identifies the SDF and specifies the parameters for charging control. The PCC rule information may depend on
subscription data.
In the case of online charging, it is possible to apply an online charging action upon PCEF events (for example, re-
authorization upon QoS change).
authorization upon QoS change).
It is possible to indicate to the PCEF that interactions with the charging systems are not required for a PCC rule, that is
to perform neither accounting nor credit control for this SDF, and then no offline charging information is generated.
to perform neither accounting nor credit control for this SDF, and then no offline charging information is generated.
Supported Features:
Provisioning of Charging-related Information for the IP-CAN Session.
Provisioning of Charging Addresses: Primary or secondary event charging function name (Online Charging
Server (OCS) addresses or the peer names).
Important:
In this release, provisioning of primary or secondary charging collection function
name (Offline Charging Server (OFCS) addresses) over Gx is not supported.
Provisioning of Default Charging Method: In this release, the default charging method is sent in CCR-I message.
For this, new AVPs Online/Offline are sent in CCR-I message based on the configuration.
Charging Correlation
For the purpose of charging correlation between SDF level and application level (for example, IMS) as well as on-line
charging support at the application level, applicable charging identifiers and IP-CAN type identifiers are passed from
the PCRF to the AF, if such identifiers are available.
charging support at the application level, applicable charging identifiers and IP-CAN type identifiers are passed from
the PCRF to the AF, if such identifiers are available.
For IMS bearer charging, the IP Multimedia Core Network (IM CN) subsystem and the Packet Switched (PS) domain
entities are required to generate correlated charging data.
entities are required to generate correlated charging data.
In order to achieve this, the Gateway provides the GGSN Charging Identifier (GCID) associated with the PDP context
along with its address to the PCRF. The PCRF in turn sends the IMS Charging Identifier (ICID), which is provided by
the P-CSCF, to the Gateway. The Gateway generates the charging records including the GCID as well as the ICID if
received from PCRF, so that the correlation of charging data can be done with the billing system.
along with its address to the PCRF. The PCRF in turn sends the IMS Charging Identifier (ICID), which is provided by
the P-CSCF, to the Gateway. The Gateway generates the charging records including the GCID as well as the ICID if
received from PCRF, so that the correlation of charging data can be done with the billing system.
PCRF also provides the flow identifier, which uniquely identifies an IP flow in an IMS session.
Policy and Charging Control (PCC) Rules
A PCC rule enables the detection of an SDF and provides parameters for policy control and/or charging control. The
purpose of the PCC rule is to:
purpose of the PCC rule is to:
Detect a packet belonging to an SDF.