IP Multimedia Subsystem Impact on Billing Dipl.Ing. Tomislav LOVRIC mobilkom austria November 2005

IP Multimedia SubsystemImpact on Billing

Dipl.Ing. Tomislav LOVRICmobilkom austriaNovember 2005

page 2DI T.Lovricmobilkom austria

„ IMS Billing is a very

complex Issue! “

Default Statement from all IMS Vendors


What is IMS ? Engineers perspective

TransportNetwork

IPC

2G SGSN

3G SGSNRNCNode B

Node B

BSCBTS

BTS BSSGSM/EDGE

RAN GPRSPEP

WLAN/xDSL

IMS CoreNetwork S/I-CSCF

Inter-workingFunctions

IM-MGW

CS/PSTN

PDFAccess

Dependencies

P-CSCF

BGCF

MGCF

HSS/SLF

ServiceLayer

SupportSystems

Provisioning OSSBilling & Customer

CareOCS /

Mediation

Go(COPS)

IP connectivity

UE / SIPTerminal

Ro(Diameter)

Rf(Diameter)

ISC Other IMS/SIPNetworks

SIPSIP SIP

SIP

SIP

Mn(H.248)

SIP

Media Server(MRFP)

3d Party SP

Is this needed ?What is it ?

Mb

Cx/Dx(Diameter)

Sh/Dh(Diameter)

Mp

Mp

WSI, etc.

Ro/Rf(Diameter)

Rf(Diameter)

Rf(Diameter)

Ro/Rf(Diameter)

Generic AS

Service Interaction Manager

PresenceServer

PoC Server

Service LogicGroup

Other Enablers

MRFC

AS (e.g. Conferencing) 3d Party

GW

Service Logic

DNS /ENUM

Ut(Http)

BSF

Service LogicGroup

Auth. Proxy

Zn(Diameter)

AP-ASs(Http)

TransportNetwork

IPC

2G SGSN

3G SGSNRNCNode B

Node B

BSCBTS

BTS BSSGSM/EDGE

RAN GPRSPEP

IPC

2G SGSN

3G SGSNRNCNode B

Node B

BSCBTS

BTS BSSGSM/EDGE

RAN GPRSPEP

WLAN/xDSLWLAN/xDSL



IM-MGW

CS/PSTN

PDFAccess

Dependencies

P-CSCF

PDFAccess

Dependencies

P-CSCF

BGCF

MGCF

HSS/SLF

ServiceLayer

SupportSystems


CareOCS /

Mediation

Go(COPS)

IP connectivity

UE / SIPTerminal

Ro(Diameter)

Rf(Diameter)


SIPSIP SIP

SIP

SIP

Mn(H.248)

SIP

Media Server(MRFP)

3d Party SP


Mb

Cx/Dx(Diameter)

Sh/Dh(Diameter)

Mp

Mp

WSI, etc.

Ro/Rf(Diameter)

Rf(Diameter)

Rf(Diameter)

Ro/Rf(Diameter)

Generic AS


PresenceServer

PoC Server

Service LogicGroup

Other Enablers

MRFC


GW

Service Logic

DNS /ENUMDNS /ENUM

Ut(Http)

BSF

Service LogicGroup

Auth. Proxy

Zn(Diameter)

AP-ASs(Http)


What is IMS ? Marketing perspective

Rich messaging

IP Multimedia channel between

terminals

Content sharing

Push totalk

Chat

Video sharing

Messaging

Presence

3G, ADSL, etc.

VoIP

Gaming


Agenda

• Short Company overview

• Motivation for IMS

• mobilkom austria and IMS

• IMS billing issues & standards

• IMS billing at mobilkom austria


Competition

• Market leader mobilkom austria

• Crowding out due to market saturation

• Intensive competition among five mobile service operators

• Combination of low call rates and high terminal subsidization

Source: mobilkom austria, Market ResearchStatus: 30. June 2005


New technologies

• Best network quality (confirmed through testing by Vienna University of Technology)

• First full-coverage GPRS-network worldwide (2000)

• First network operator with WAP-Push technology worldwide (2001)

• First national UMTS-network in Europe (2002)

• First national network operator with PUSH-to-Talk technology (2004)

• First national EDGE-network (2005)


UMTS – The 3rd Generation

• Data transfer rates: up to 384 kBit/s

• Population Coverage: 62%

• UMTS+EDGE: Full Coverage Multimedia-Network

• HSDPA: New 3G-Turbo (based on UMTS) allows data transfer rates up to 3.6MBit/s (End 2005)

Status: 30. June 2005


Innovations

• ÖBB MOBILE TICKET - World’s first actual m-commerce application (1999)

• A1 MOBILGUIDE - Europe’s first “Location Based Service” (2000)

• A1 GPRS DATAGUARD - Secure mobile access to company data (2001)

• A1 TELECOMMANDER - Control devices remotely using mobile and Internet (2002)

• Mobile payment of parking fees (2003)

• A1 SIGNATURE – Digital signature with the mobile phone (2004)


Locations & Members

• mobilkom austria

• Mobiltel (Bulgaria)

• VIPnet (Croatia)

• Si.mobil (Slovenia)

• mobilkom liechtenstein

mobilkom austria group (mag) has locations in 5 countries


Operating Figures

3,625Employees

-incl. Mobiltel

3,599

5,955

2004 1.HY 05

4.95 mCustomers

-incl. Mobiltel

5.0 m

8.2 m


407.4 m EUR

765.4 m EUR

2004

2,125.5 m EUR

Key Financial Indices

excl. Mobiltel

Revenues

Adjusted EBITDA

Operating income


Agenda







IMS is an evolution of GSM/UMTSThe IP Multimedia Subsystem (IMS) was first introduced with 3GPP Release 5 and will be advanced by Release 6 (frozen) and 7 (work in progress).

Source: 3GPP, 2004


IMS is the vision of a NG mobile Internet• During the first ten years ... the

Internet has been dominated by non real-time, person-to-machine ... information services.

• The next major development will be realtime person-to-person communications, including voice and video.

• The IMS vision is to integrate mobile voice communications and Internet technologies, bringing the power and wealth of Internet services to mobile users.

Source: UMTS Forum/Strategic Considerations for IMS, Feb 2003

IMSIP core

Mobile MM device

MM Terminal 1

MM Terminal 2

MM Server 1 MM Server 2

Fixed access network

AAA, SecurityUser DataMobile access

network


New Service ArchitectureSe

rvic

e 1

Serv

ice

2

Serv

ice

3

Network Functions

Common Functions

Applications

• Topics• Application complexity

Vertical Service Architecture

Serv

ice

1

Serv

ice

2

Serv

ice

3

Horizontal Service Architecture

•Topics:

• Generic architecture

• Specific applications


Communication Push-to-talk/Push-to-show VOIP Click-to-dial Instant/Multimedia Messaging Presence Multi-Party Chat See what I see (rich voice) Person-to-Person Multimedia Video conferencing Collaboration (Application

sharing, Whiteboard)

Communication Push-to-talk/Push-to-show VOIP Click-to-dial Instant/Multimedia Messaging Presence Multi-Party Chat See what I see (rich voice) Person-to-Person Multimedia Video conferencing Collaboration (Application

sharing, Whiteboard)

Entertainment Person-to-

Person Gaming

Interactive Shows and Events

Multimedia Advertisement

Audio and Video Streaming

Entertainment Person-to-

Person Gaming

Interactive Shows and Events

Multimedia Advertisement

Audio and Video Streaming

Combined basic services,

simultaneously, dynamically controlled

IMS allows all voice & data

services to be integrated into a

single proposition, allowing a variety

of user experiences

Enterprise and on the road Dynamic Info Services Interactive guidance Remote Facility Control

Enterprise and on the road Dynamic Info Services Interactive guidance Remote Facility Control

IMS Services


Agenda







It‘s a long way ...

• Research projects• SIP, OSA, Web Services

• Next Generation Service Network concept• Technology strategy & layered architecture blueprint

• IMS & other strategic platforms, e.g. NGIN

• Next Generation Service Network implementation plan• Business framework

• System implementation

2002...2004 2005 2006...

IMS preparation: research projects

Next Generation Service Network concept

Next Generation Service Network implementation


• Existing pre-IMS IP-based services• Push-to-Talk, Video Conversion,

WAP, Messaging (MMS, eMail)

• Pre-IMS infrastructure• Built-in user & session management

• IPv4

• Proprietary protocols

• IMS-like Internet services• VoIP: Skype, SIPgate

• Peer-2-Peer file sharing: Kazaa, Napster

• Instant Messaging: MSN, AoL

... in a complex environment ...

WAP

Internet

Telephony

Messaging

Streaming IMS


... with many issues

• User management: Identities, Authentication • Security• Integration: IP versions, QoS, interworking• Provisioning&Charging• Service architecture for terminals & network• Operations

Depending on the service portfolio and system architecture, we&you should consider


Agenda







Charging Models I

There are typically four main elements to a tariff:

- Subscription

- Events

- Transferred Volume

- Session Duration

any or all of which may be used in combination !

QoS ??


Synchronous communication (Voice, Videotelephony, Chat, Streaming) -> charged by duration or optional by setup charge or minimum increments per session

Asynchronous communication (any kind of messaging) -> charged by event (volume classes)

Active applications by known and authenticated user -> charged by event per download or by subscription

Active applications by unknown user -> charged by duration or optional by setup charge or minimum increment per session

Browsing & Content on-net (Content MMS, Content Streaming & Download) -> charged by event or in case of discovery/teaser by flat rate

Browsing & Content off-net (the user content activity stays out of the control of the network) -> charged by duration or optional setup charge or minimum increments per session

Peer-to-peer Services-> charged by duration or volume, thus application billing not applicable

Charging Models II


P-CSCF I-CSCF S-CSCF

AS/ MRFCServers

HSSPDF/CRF

BGCFMGCF MGW

GGSN

IMS : Billing sources

G-CDR’s

Bearer Volume

• PDP Session Volume

• CBB Info

• IMS Categorized

IMS Session Info

• IMS Session Info

• Application Id

• P2P Services Info..

IMS Application&Media Info

• Application_Id‘

• Duration

• Volume..


32.200ChargingPrinciples

32.225ReservedforStage 3

of IMS (R5)

32.215CS Domain

Stage 3

32.205CS Domain

Stage 3

32.235ServiceDomain

Stage 3


32.225ReservedforStage 3

of IMS (R5)

32.215CS Domain

Stage 3

32.205CS Domain

Stage 3

32.235ServiceDomain

Stage 3

Standards: Release 5


32.298CDR Parameter

Description

32.296OCS Applications

and Interfaces


32.252WLanCharging

32.251CS Charging

32.250CS Charging

32.260IMS Charging

32.27xTbd.

32.271LCS Charging

32.270MMS Charging

32.299DiameterCharging

Application

32.297CDR File Format

and Transfer

32.295CDR Transfer

32.298CDR Parameter

Description

32.296OCS Applications

and Interfaces


32.252WLanCharging

32.251CS Charging

32.250CS Charging

32.260IMS Charging

32.27xTbd.

32.271LCS Charging

32.270MMS Charging


Application


and Transfer

32.295CDR Transfer


32.252WLanCharging

32.251CS Charging

32.250CS Charging

32.260IMS Charging

32.252WLanCharging

32.251CS Charging

32.250CS Charging

32.260IMS Charging

32.27xTbd.

32.271LCS Charging

32.270MMS Charging

32.27xTbd.

32.271LCS Charging

32.270MMS Charging


Application


and Transfer

32.295CDR Transfer

Standards: Release 6


TransportNetwork

IPC

2G SGSN

3G SGSNRNCNode B

Node B

BSCBTS

BTS BSSGSM/EDGE

RAN GPRSPEP

WLAN/xDSL



IM-MGW

CS/PSTN

PDFAccess

Dependencies

P-CSCF

BGCF

MGCF

HSS/SLF

ServiceLayer

SupportSystems


CareOCS /

Mediation

Go(COPS)

IP connectivity

UE / SIPTerminal

Ro(Diameter)

Rf(Diameter)


SIPSIP SIP

SIP

SIP

Mn(H.248)

SIP

Media Server(MRFP)

3d Party SP


Mb

Cx/Dx(Diameter)

Sh/Dh(Diameter)

Mp

Mp

WSI, etc.

Ro/Rf(Diameter)

Rf(Diameter)

Rf(Diameter)

Ro/Rf(Diameter)

Generic AS


PresenceServer

PoC Server

Service LogicGroup

Other Enablers

MRFC


GW

Service Logic

DNS /ENUM

Ut(Http)

BSF

Service LogicGroup

Auth. Proxy

Zn(Diameter)

AP-ASs(Http)

TransportNetwork

IPC

2G SGSN

3G SGSNRNCNode B

Node B

BSCBTS

BTS BSSGSM/EDGE

RAN GPRSPEP

IPC

2G SGSN

3G SGSNRNCNode B

Node B

BSCBTS

BTS BSSGSM/EDGE

RAN GPRSPEP

WLAN/xDSLWLAN/xDSL



IM-MGW

CS/PSTN

PDFAccess

Dependencies

P-CSCF

PDFAccess

Dependencies

P-CSCF

BGCF

MGCF

HSS/SLF

ServiceLayer

SupportSystems


CareOCS /

Mediation

Go(COPS)

IP connectivity

UE / SIPTerminal

Ro(Diameter)

Rf(Diameter)


SIPSIP SIP

SIP

SIP

Mn(H.248)

SIP

Media Server(MRFP)

3d Party SP


Mb

Cx/Dx(Diameter)

Sh/Dh(Diameter)

Mp

Mp

WSI, etc.

Ro/Rf(Diameter)

Rf(Diameter)

Rf(Diameter)

Ro/Rf(Diameter)

Generic AS


PresenceServer

PoC Server

Service LogicGroup

Other Enablers

MRFC


GW

Service Logic

DNS /ENUMDNS /ENUM

Ut(Http)

BSF

Service LogicGroup

Auth. Proxy

Zn(Diameter)

AP-ASs(Http)

IMS architecture – Overview


Charging Interfaces to IMS network

Charging

Collection

Function

(CCF)

ISC

Ro

SCF

ECF

BCF CF

Rating

Function

ReRc

Rb

BGCFBGCF

Charging

Collection

Function

[ CCF ]

Billing

System

Billing

System

Rf

SGSNSGSN

GGSNGGSNGa

Online

Charging

System

(OCS)

Online

Charging

System

(OCS)

Ro

CAP

Bp

MGCF

I-CSCF

P-CSCF

S-CSCF

AS

MRFC

ChargingGatewayFunction

[ CGF ]

Bi


Problem: Billing for IMS Services

Several charging layers in parallel:

Several charging sources:

IMS Session

Bearer

Content

GGSN S-CSCF AS 1 AS 2


The bearer should be free-of-charge (apart form peer-to-peer services)

No billing Info from the S-CSCF in case of application billing (Vendors !)

Potential solution:

How to charge for IMS Services ?

Correlation ? In real-time ??

Only one IMS charging source !


Impacts on Billing & Provisioning

• New User-Identities : User-ID as a charging key => mka is ready !

• Rating against A- and B-Numbers for Data-Services

• Peer-to-peer services : how to find out what users are doing ?

• Roaming : H-GGSN vs. V-GGSN solution

• QoS

• AoC /Advice of charge


Charging: Who pays?

• User identities for charging• Different identities for bearer vs. session vs. application:

MSISDN, IMSI, User ID, IMPI/IMPU, Credit Card, ...

• Bearer or application may be provided by 3rd party

• Keep it understandable & simple

• Charging information handling• Single point of charging information vs. correlation?

• Real-time charging for all users (pre- & postpaid)?

Bearer: MSISDN

Session: User ID

Application: Credit Card

Operator: Define consistent and simple charging strategy Standardisation: Define charging attributes for IMS enablers

(e.g. PTT) Industry: Implement correlation information (e.g. GCID/ICID)


Agenda







mobilkom: IMS Billing architecture

GGSNS - CSCF App. Server

(e.g. PoC)[ IPC ]

DiameterRo Ro

ORGATIDIMS OCF

IN_tm_v 5.0Online Billing

Diameter

AMDOCSCGFIMS CCF

ADATAOffline Billing

G-CDR Rf RfDiameter

VF DCCA

Post-Paid Billing

Pre-Paid Billing


Vendor Details

TID/OCF – Transactional Integration Device

Vendor: Openet, Active Charge Integrator: SIEMENS

CGF/CCF – Billing Mediation

Vendor: Metasolv MNM 5.0 Integrator: Kapsch Carrier Com

GGSN – Nortel IPC Integrator: Kapsch Carrier Com

AMDOCS – Postpaid Billing

ORGA OPSC – Prepaid Billing

ADATA – Postpaid CDR format, ASCII, modularly created with flexible

length

Design: internal development, design by T.Lovric

IN-tm – Prepaid format


Conclusio

Essential criteria for successful IMS Billing launch:

DIAMETER [Ro/Rf] as the mayor charging protocol

ICID/GCID implementation ASAP

Home GGSN/P-CSCF Solution to start with

Single charging source for IMS Services


Thank you – Any questions ?

Dipl.Ing Tomislav LOVRICmobilkom austria AG & Co KGObere Donaustraße 291020 Wienwww.mobilkomaustria.com

E-mail: [email protected]

Documents

IP Multimedia Subsystem Impact on Billing Dipl.Ing. Tomislav LOVRIC mobilkom austria November 2005