Triggers For Charging Information Addition And Cdr Closure; Billing Record Transfer; Ue Identity And Location Information Support; Ue Identity Information Support - Cisco ASR 5000 Administration Manual

RADIUS-based Enhanced Wireless Access Gateway Overview
 Gz/Wz Reference Point

Triggers for Charging Information Addition and CDR Closure

The R-eWAG uses the Charging Characteristics to determine whether to activate or deactivate CDR generation. The
Charging Characteristics are also used to set the coherent chargeable event conditions (for example, time/volume limits
that trigger CDR generation or information addition). Multiple Charging Characteristics "profiles" may be configured in
the R-eWAG to allow different sets of trigger values.
Triggers for S-CDR Closure
The following events trigger closure and sending of a partial S-CDR:
 Time Trigger (every x seconds configured using "interval x")
 Volume Trigger (every x octets configured using "volume x" (up/down/total))
 On reaching maximum number of container limit
 Command
An S-CDR is closed as the final record of a session for the following events:
 UE-initiated call termination
 Admin release at R-eWAG via
 GGSN-initiated call termination
 Abnormal releases due to multiple software failures.
Triggers for S-CDR Charging Information Addition
The "List of Traffic Volumes" attribute of the S-CDR consists of a set of containers, which are added when specific
trigger conditions are met, and identify the volume count per PDP context, separated for uplink and downlink traffic, on
encountering that trigger condition.

Billing Record Transfer

The S-CDRs generated can either be stored on Hard Disk (GSS) or can be transferred to the CGF. Local storage is also
available. Gz/Wz is the offline charging interface (CDR-based) between the GSN and the CGF. The R-eWAG supports
both GSS and GTPP-based record transfer.

UE Identity and Location Information Support

The R-eWAG supports sending UE identity and location information to the GGSN, which the GGSN can use for Lawful
Intercept support.

UE Identity Information Support

The R-eWAG receives UE identity information from the Wi-Fi AAA in the optional "SN-WLAN-UE-Identifier" AVP
included in Accounting-Start/Accounting-Interim message from the WLC. The R-eWAG encodes the UE identity
information into IMEIsV IE of Create PDP Context. The UE identity information is composed of the UE's MAC
gtpp interim now
clear sub all
Cisco ASR 5000 Enhanced Wireless Access Gateway Administration Guide ▄
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