The Importance of OSA/Parlay in the Service Network Evolutiondocbox.etsi.org/workshop/2006/ICT_OSA-PARLAY/21_03/ETSI_TALK… · 6 Niklas Blum Fraunhofer FOKUS 2006 IMS as NGN SDP

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Niklas Blum Fraunhofer FOKUS 2006

Niklas Blum

TU Berlin / Fraunhofer FOKUS

[email protected]

www.fokus.fraunhofer.de/ims

The Importance of OSA/Parlay in the Service Network Evolution

ICT & OSA / Parlay Workshop Campinas/Sao Paulo, Brazil, March 22nd, 2006

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Overview

• How to stimulate applications development?

• Service Delivery Platforms and Service Enabler

• IMS Application Server Options (combining SIP AS and Parlay)

• Case Study: IMS-based 3rd Party Community services

• IMS component testing and IMS service validation within the IMS Playground @ FOKUS

• Summary

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The Drama of todays Service Space

• There is broad spectrum of technologies one has to understand in thecontext of Fixed Mobile Convergence and Next Generation Networks(telecoms, internet, IT)

• The converged network value chain is getting complex (network, portal, content, etc.)

• Big players try to cover all major layers resulting in non-optimumoffers which are not appreciated

• Innovation in the telecoms field is driven by technology push

• Access to the new technologies is quite complicated for small playersand most particular for application providers

• This is too expensive and often technology is promoted to early withraising wrong expectations resulting in frustration

• A technology pull model in which technology introduction will bedriven by concrete demand and specific applications

• This means the applications developers need early access to thetechnologies �� Open testbeds are needed

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IP – Networkmobility-enabled

GSM

EDGE

GSM

EDGEUMTS

CDMA

UMTS

CDMA

WirelinexDSL

WirelinexDSL

POTS/ISDN

POTS/ISDN

otherother

CommonApplicationsand Services

WLANWiMax

WLANWiMax

Network Generation Network Vision

• Mobility and QoS enabled IP core

• Simplified service provisioning independent of access

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Overview






• Summary

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IMS as NGN SDP Motivation

• IP network connectivity is given (GPRS, UMTS, WLAN, DSL, etc.)

• Use IP network for CS-like, synchronous, QoS enabled MM services

• Enable an open set of innovative services (like in the internet)

• Provide a controlled, secure service environment with QoS and charging capabilities

• Provide a minimum set of interfaces (common denominator) forinteroperability

• Reuse as much as possible standard IP protocols for session control, management and bearer transport (SIP, AAA, RTP)

• Extend these protocols to achieve security and managebility

• Take into account existing mobility services and infrastructure

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Communications Landscape Is Changing

The IT CommunityRich in Applications

and Creativity

The Telecom CommunityRich in Networks and Connectivity

Technical

Convergence

OSA, Parlay and JAIN are examples of emerging Technology Standards that facilitate the convergence

of the IT and Telecom communities

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3GPP IP Multimedia Subsystem (IMS)

• The IMS has been originally defined by the 3rd Generation Partnership Project (3GPP) as part of UMTS Release 5 / IMT2000

– Extensions have been made in release 6 to adapt to real world (e.g. IPv4)

• 3GPP2 has adopted the IMS architecture on top of Multimedia Domain (MMD)

• ETSI TISPAN is defining Next Generation Network SDP for all IP Networks based on IMS

• Open Mobile Alliance (OMA) defines IMS Enablers & Services

• The IMS represents an overlay network on top of GPRS networks and provides an all IP service delivery environment for mobile multmedia service provision (VoIP, Videotelephony, MM Conferencing, Mobile Content, etc.)

• The IMS is based on the IP world protocols, namely

– SIP (Session Initiation Protocol) for Session Control, and

– Diameter for AAA (Authentication, Authorisation & Accounting)

– plus many others, i.e. SDP, RTP, RTCP, MGCP, etc.

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IMS Layers: Transport, Session Control, Apps

User Plane

Application Plane

Control Plane

S-CSCF

HSS

SIP AS SIP AS

MRFC

B-GW

SIP

Diameter

PSTN

RTPI-CSCFP-CSCF

MRFP

MEGACO

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IMS Major Components

• The IMS is an Overlay Session/Service Control Architecture on top of thePacket domain (GPRS, UMTS, WLAN, DSL) based on IP technologies and IETF protocols (e.g. SIP, Diameter):

– IMS Core

• S-CSCF (Serving Call Session Control Function) the IS anker point in the homenetwork

• I-CSCF (Interrogating Call Session Control Function) providing topology hiding

• P-CSCF (Proxy Call Session Control Function) Entrypoint into IMS world

• MRF (Media Resource Function) – Media Server hosting special resources

• MGCF (Media Gateway Control Function) for Interworking with legacy networks

• PDF (Policy Decision Function) for QoS Control using Polícies (COPS)

– IMS Application Layer

• HSS (Home Subscriber System) for maintaining subscriber and AS profiles

• AS (Application Server Function) for hosting applications

• The main new protocols used are (IETF’s) SIP and DIAMETER (MAP and CAP are also important).

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Overview






• Summary

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IMS Application Server Options

User Plane

Application Plane

Control Plane

S-CSCF

HSS

SIP AS OSA GW IM-SSF

MRF B-GW

OSA/ParlayAS

SIP

Diameter

API

PSTN

RTP

Parlay API

CAMEL

CAP

Local ASI-CSCFP-CSCF

Today‘sfocus

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Online &Offline

Charging (ECF, CCF)

OSA / Parlay AS (3rd Parties)

Service Delivery Platform

(Application Server) Parlay App 1

Service Platform Trigger PointsParlay API (MPCC, MMM, Pres, Charg, ...

SIP Interface

HSS

S-CSCF

S

P

T

S

PFilter criteria

ISC

SIP

SIP-Server

Sh =

Diameter

Cx =

DiameterRo + Rf =

Diameter

Diameter

Parlay X GWParlay App 2

Parlay App 3

Parlay X App 1Parlay X App 2

Other accessnetworks

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NGN/IMS Applications

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Overview






• Summary

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Push to Talk over Cellular (PoC)

• PoC is standardised in the Open Mobile Alliance (OMA), Rel. 1 in 2005

• First specification process was initiated by the MENSA (Motorola, Ericsson, Nokia, Siemens, AT&T Wireless) consortium in 2002, 2003

• PoC is a way of communication that uses half-duplex connections– similar to walkie-talkie functionality

– allows to deliver a talk burst to a collection of users

• PoC client is (usually) in the handset as a soft client

• PoC server has ambiguous functionality: It manages both the signalling and also the media

– By definition the PoC server is acting as a SIP AS, connecting to IMS CN throughthe ISC interface

• OMA PoC does not consider access network issues (any access network canbe used)

• OMA PoC requires the XML Document Management (XDM) enabler for groupsession configuration

• OMA PoC may use OMA XDMS architecture for presence as a presenceenabler

• Dedicated floor control messages are used to grant access to the floor to ensure semi-duplex paradigm

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OMA PoC Architecture Rel. 1 (2005)

• Introduction of OMA Enablerarchitecture forPoC

• XML Dokument Management Enabler

• Alignment of PoCArchitecture to OMA enablerconcept

• Presence Enabler

• DeviceManagement Enabler

• NNI

Used Protocols:

• SIP

• RTP/RTCP

• RTCP

• XCAP

Source: OMA/PoC Candidate Version 1.0

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From PTT to Community-Support

• PoC/PTT basically defines a specific service based on genericenablers (Presence, GLMS/XDMS, FOTA)

• Infact PoC/PTT could be regarded as a specific instantiation of a groupcommunication framework

• Making money with PoC/PTT is unclear

• Making money with SMS and voice calls is clear

• Idea:

• Reuse PoC/PTT enablers for other communication services as well

�� Integrated Presence driven IM, email, SMS, MMS, VoIP, CS-Calls, Video calls, etc.

• Provide group communication to those who really need it

�� well established Communities (Sports, Work, health, fun) will appreciatethis!

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From PTT to Community-Support

• But how to link these enablers with the legacy services

– IMS is defined for all-IP!

• Solution 1: implement PTT on top of OSA/Parlay APIs

– Provides reuse of enablers for different network services

• Solution 2: Provide third party interfaces with OSA/Parlay APIs (i.e. Parlay X) to the existing communities

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Community Services across different Networks

Community Service Providers

Community Framework

WS ClientsOSA ASSIP AS

Service Enabler

Presence GLMS Messaging

IMS CoreP/I/S-CSCF,MS,MG

IdentityManagement

…

HSS

WLAN

UMTSDSL GSM ISDN

FrameworkUDDI

IN Platforms

SIP

XCAP

HTTP

RTP

GUI

Community Client

CommunityFeature

CommunityFeature

CommunityFeature

Policy Enforcement (OMA OSE)

OSA/Parlay Parlay XISC

JAIN SLEE

RA

Media

Server

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Community Example: Push-to-Share

ParlayX Interfaces

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Overview

• How to stimulate IMS applications development?

• IMS as SDP and Service Enabler




• Summary

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Fraunhofer FOKUS Facts

– FOKUS has been founded 1988 in Berlin, Germany

– 220 employees: scientists, students, techniciansoriginating from 30 nations

– FOKUS is THE Telecoms R&D institute within theFraunhofer Society

• Fraunhofer Society is the biggest German R&D organisation, total # of 12.000 employees)

• 60 institutes in total, 15 institutes in ICT

– FOKUS works since 17 years on convergence of IT, telecoms, internet and homeentertainment and performs applied research and development projects

• Performs strategic studies, solution concepts, system integration and prototypdevelopments

• Strong cooperation with universities & Establishment of spin offs (e.g. iptelorg.com)

– FOKUS fundung: 20% state, 80% industry R&D projects

• Key to success: Strategic Partnerships with big players (DTAG, NTT, etc)

– Main R&D Vision: „I-centric communications“ and „autonomic communications“

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Nat. Open 3Gb Test & Development Center

– Provision of a unique 3Gb Testbed covering all three 3G beyond layers

– Foundation for industrial and academic projects

• Applications development support

• Applications validation

• Service Platform prototyping

• Infrastructure component testing

• Network Technologies integration

• ....

– Officially supported by

Applications

UMTSFDD/TDD

GSM /GPRS

WLANa/b/x

DVB-S/T

weitere

3Gb Network Technologies

Service Platforms& Middleware

mGov

OtherNetws

Parlay

3Gb Roaming

SIPAAAIMS

weitere

Web services

Otherplatforms

mHealth mXXX. weitereweitereOtherApps

Engineering Tools,Conform

ance

Testing,

Measurm

ents, and M

anagement

European 3Gb R&D Projects

National 3Gb R&D Projects

3G beyond Testbed @ Fraunhofer FOKUS

Parlay Playground

IMS Playground

www.fokus.fraunhofer.de/national_host

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IMS Playground @ FOKUS

• forms a globally unique state of the art IMS infrastructure featuring all majorIMS componentsand interfaces

• is a key infrastructure of the FOKUS NGN Service Delivery Platform test and development center

• comprises

– a full IMS based on own developments

– additional best of bread carrier grade components from partners

• Goals:

– Provision of an open IMS platform and planned interconnection to Operator IMS test beds

– Interoperability test of IMS components (S-CSCFs, Media Gateways, SIP AS, etc.)

– Environment for development of new MM applications, applicationplatform extensions and IMS mobility, QoS and security reasearch

• Contact: www.fokus.fraunhofer.de/ims

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OPEN IMS Playground Overview

Goals:

– Provision of an open IMS platform and plannedinterconnection to otherIMS testbeds

– Interoperability and compliance testing of IMS components (S-CSCFs, Media Gateways, SIP AS, etc.)

– Environment fordevelopment of new MM applications, applicationplatform extensions and IMS mobility, QoS and security research

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FOKUS – Components in the IMS Playground

SEMSSEMS

FHoSSFHoSS

SERSER

SIPSEESIPSEEOCS / OCS /

OCS XOCS X

OSCOSC

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Integration of Partner Components @ FOKUS IMS PG

Note: This is not a complete Partner List!

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IMS Playground - Use Cases

– Consulting on IMS development strategies for major vendors

– Consulting on bids and gap analysis of commercial products for key global integrator

– Extensions (Interfaces/Reference Points) of commercial solutions of various vendors

– Implementation of prototypes for vendors and operators

– Integration and Compliancy testing of commercial solutions

– Consulting on IMS integration strategies for major German Operator

– Interoperability testing for major European vendors

– IMS Load- /Perfomance testing for key global hardware vendor

– Application Service development for major German operator

– Consulting for establishing IMS Testbeds at remote sites

– Plus German and European R&D projects on Feature Interaction andService composition

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Overview

• How to stimulate IMS applications development?

• IMS as SDP and Service Enabler




• Summary

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Summary

• IMS

– is an overlay service network architecture applicable to any IP network(GPRS, UMTS, WLAN, DSL, ..) based on internet standards (IETF)

– can be considered as THE universal Service Delivery Platform for NGNssupporting also Fixed Mobile Convergence (FMC)

• IMS should be mainly considered as a service enabler (i.e. no real IMS services are standardised!)

– but OMA defines services to be mapped onto IMS

– Push to Talk / PoC can be regarded as first IMS real life proof-of-concept

– Service implementation is flexible (CAMEL, SIP AS, OSA/Parlay) and requires probably more investigations

– Open testbeds are needed to test and validate IMS components and applications

• �� More information at www.fokus.fraunhofer.de/ims

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Any Questions?

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The Presenter

Niklas Blum

Niklas Blum is a senior research scientist at the “3G beyond” division at the FraunhoferInstitute FOKUS, which also provides the national 3G beyond test and development centre in Germany.

His major research topics are applications and application provisioning for NextGeneration Networks (NGN) using the IP Multimedia Subsystem. He is the author of several technical papers/articles.

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For more Information ...

If you need further consultancy or onsite technical coaching, pleasecontact:

Prof. Dr. Thomas Magedanz

TUB Chair Next Generation Networks / Director FOKUS 3Gb Division

� � � � [email protected]�� +49 171 172 70 70�� +49 30 3463 7229

� � � � Kaiserin Augusta-Allee 31 14513 Berlin, Germany

The Importance of OSA/Parlay in the Service Network Evolutiondocbox.etsi.org/workshop/2006/ICT_OSA-PARLAY/21_03/ETSI_TALK… · 6 Niklas Blum Fraunhofer FOKUS 2006 IMS as NGN SDP

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