Transcript PPT Version

Diameter credit control application
draft-hakala-diameter-credit-control-05.txt
Harri Hakala
Leena Mattila
Jukka-Pekka Koskinen
Marco Stura
Ericsson
Ericsson
Nokia
Nokia
Why New Diameter Application?
• During the last years the on-line accounting or so called pre-paid
accounting has become very popular in mobile networks.
- SS7 based protocols and IN (Intelligent Network) approach are
used to realize pre-paid accounting.
• A new IP-based accounting protocol is urgently needed to support
credit based accounting for Internet services
• Diameter base accounting or the current Diameter applications are
not sufficient for real-time credit control.
• Diameter base accounting can be widely utilized.
By accomplishing Diameter base accounting with bi-directional
credit control functionality the on-line accounting support can be
provided by the AAA infrastructure.
Overview of Application
• A general purpose real-time accounting protocol for
various services/applications.
• Diameter accounting messages (ACR/ACA):
- with new mandatory controlling AVPs
- application defined state machines (session &
event based state machines for client and server)
- application specific fault handling
• On-line credit control with credit reservation (using
session records) and operations: Price Enquiry, Balance
Check, Direct Debiting and Refund (using event records)
are supported
3GPP Alignment
• The 3GPP TS 22.115 (service aspects; Charging and Billing)
specifies charging guidelines for pre-paid services
• The 3GPP TS 32.225 (Rel. 5) specifies Diameter application
for the IP Multimedia charging. This speciation is used both
for off-line and on-line accounting.
• The 3GPP has aligned its IP multimedia on-line accounting
functionality with the credit control draft.
What’s next ?
• The content of the credit control draft will be probably
incorporated in the 3GPP TS 32.225 (as an Annex ?).
• New work item for the AAA-WG ?