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Niklas Blum

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Service Delivery Platforms and Service Enabler ... S-CSCF (Serving Call Session Control Function) the IS anker point in the home network ... – PowerPoint PPT presentation

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Title: Niklas Blum


1
ICT OSA / Parlay Workshop Campinas/Sao Paulo,
Brazil, March 22nd, 2006
  • The Importance of OSA/Parlay in the Service
    Network Evolution
  • Niklas Blum
  • TU Berlin / Fraunhofer FOKUS
  • blum_at_fokus.fraunhofer.de
  • www.fokus.fraunhofer.de/ims

2
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 _at_ FOKUS
  • Summary

3
IMS as NGN SDP Motivation
  • IP network connectivity is given (GPRS/UMTS,
    WLAN, WiMax, DSL, ...)
  • Main IMS idea Use IP network for both
  • Circuit-switched-like, synchronous, QoS enabled
    multimedia services
  • Packet data multimedia services (like in the
    internet)
  • Standards scope Provide a minimum set of
    interfaces (common denominator) for
    interoperability (PlugPlay of applications)
  • Reuse as much as possible standard IP protocols
    for session control, management and bearer
    transport (SIP, AAA, RTP)
  • BUT What is the difference to the internet /
    VoIP?
  • ? IMS should provide a controlled, secure
    internet service environment with QoS and
    charging capabilities
  • Take into account existing mobility
    infrastructure and mobile services to provide an
    evolution story ? Combinational services
  • Today IMS is extended to cope with fixed access
    networks as well
  • ? IMS as common SDP for Fixed Mobile Convergence!

4
The Drama of todays Service Space
  • There is broad spectrum of technologies one has
    to understand in the context 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-optimum offers which are not
    appreciated
  • Innovation in the telecoms field is driven by
    technology push
  • Access to the new technologies is quite
    complicated for small players and most particular
    for application providers
  • This is too expensive and often technology is
    promoted to early with raising wrong expectations
    resulting in frustration
  • A technology pull model in which technology
    introduction will be driven by concrete demand
    and specific applications
  • This means the applications developers need early
    access to the technologies ? Open testbeds are
    needed

5
Network Generation Network Vision
  • Mobility and QoS enabled IP core
  • Simplified service provisioning independent of
    access

Common Applications and Services
GSM EDGE
UMTS CDMA
IP Network mobility-enabled
WLAN WiMax
Access System
POTS/ ISDN
Wireline xDSL
other
6
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 _at_ FOKUS
  • Summary

7
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) for interoperability
  • 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

8
Communications Landscape Is Changing
The IT Community Rich in Applications and
Creativity
Technical Convergence
The Telecom Community Rich in Networks and
Connectivity
OSA, Parlay and JAIN are examples of emerging
Technology Standards that facilitate the
convergence of the IT and Telecom communities
9
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.

10
IMS Layers Transport, Session Control, Apps
Application Plane
SIP AS
SIP AS
Control Plane
HSS
S-CSCF
SIP
I-CSCF
P-CSCF
RTP
Diameter
MRFC
MEGACO
User Plane
MRFP
B-GW
PSTN
11
IMS Major Components
  • The IMS is an Overlay Session/Service Control
    Architecture on top of the Packet 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 home network
  • 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 (IETFs) SIP and
    DIAMETER (MAP and CAP are also important).

12
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 _at_ FOKUS
  • Summary

13
IMS Application Server Options
Todays focus
Application Plane
OSA/Parlay AS
CAMEL
API
Parlay API
CAP
SIP AS
OSA GW
IM-SSF
Control Plane
HSS
SIP
RTP
S-CSCF
Local AS
I-CSCF
P-CSCF
Diameter
User Plane
MRF
B-GW
PSTN
14
OSA / Parlay AS (3rd Parties)
Parlay X App 1
Service Delivery Platform (Application Server)
Parlay X App 2
Parlay App 1
Parlay App 2
Parlay App 3
Parlay X GW
HSS
Service
Platform Trigger Points
Parlay API (MPCC, MMM, Pres, Charg, ...
Sh Diameter
Other access networks
SIP Interface
Diameter
Cx Diameter
Ro Rf Diameter
ISC
Online Offline Charging (ECF, CCF)
S-CSCF
SIP-Server
S
S
Filter criteria
SIP
P
P
T
15
NGN/IMS Applications
16
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 _at_ FOKUS
  • Summary

17
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, ATT
    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 through the ISC
    interface
  • OMA PoC does not consider access network issues
    (any access network can be used)
  • OMA PoC requires the XML Document Management
    (XDM) enabler for group session configuration
  • OMA PoC may use OMA XDMS architecture for
    presence as a presence enabler
  • Dedicated floor control messages are used to
    grant access to the floor to ensure semi-duplex
    paradigm

18
The full OMA Picture
  • Introduction of OMA Enabler architecture for PoC
  • XML Dokument Management Enabler
  • Alignment of PoC Architecture to OMA enabler
    concept
  • Presence Enabler
  • Device Management Enabler
  • NNI

19
From PTT to Community-Support
  • PoC/PTT basically defines a specific service
    based on generic enablers (Presence, GLMS/XDMS,
    FOTA)
  • Infact PoC/PTT could be regarded as a specific
    instantiation of a group communication 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 appreciate this!

20
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

21
Community Services across different Networks
Community Service Providers
JAIN SLEE
SIP AS
WS Clients
OSA AS
Community Framework
Community Feature
RA
Community Feature
Community Feature
ISC
OSA/Parlay
Parlay X
Community Client
GUI
HTTP
Policy Enforcement (OMA OSE)
XCAP
Service Enabler

SIP
Presence
GLMS
Messaging
Identity Management
Framework UDDI
Media Server
RTP
IMS Core P/I/S-CSCF,MS,MG
HSS
IN Platforms
WLAN
DSL
GSM
ISDN
UMTS
22
Community Example Push-to-Share
ParlayX Interfaces
23
Overview
  • How to stimulate IMS applications development?
  • IMS as SDP 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 _at_ FOKUS
  • Summary

24
Fraunhofer FOKUS Facts
  • FOKUS has been founded 1988 in Berlin, Germany
  • 220 employees scientists, students, technicians
    originating from 30 nations
  • FOKUS is THE Telecoms RD institute within the
    Fraunhofer Society
  • Fraunhofer Society is the biggest German RD
    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 home entertainment and
    performs applied research and development
    projects
  • Performs strategic studies, solution concepts,
    system integration and prototyp developments
  • Strong cooperation with universities
    Establishment of spin offs (e.g. iptelorg.com)
  • FOKUS fundung 20 state, 80 industry RD
    projects
  • Key to success Strategic Partnerships with big
    players (DTAG, NTT, etc)
  • Main RD Vision I-centric communications and
    autonomic communications

25
3G beyond Testbed _at_ Fraunhofer FOKUS
  • 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

Parlay Playground
IMS Playground
www.fokus.fraunhofer.de/national_host
26
IMS Playground _at_ FOKUS
  • forms a globally unique state of the art IMS
    infrastructure featuring all major IMS
    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, application platform extensions and
    IMS mobility, QoS and security reasearch
  • Contact www.fokus.fraunhofer.de/ims

27
OPEN IMS Playground Overview
  • Goals
  • Provision of an open IMS platform and planned
    interconnection to other IMS testbeds
  • Interoperability and compliance testing of IMS
    components (S-CSCFs, Media Gateways, SIP AS,
    etc.)
  • Environment for development of new MM
    applications, application platform extensions and
    IMS mobility, QoS and security research

28
FOKUS Components in the IMS Playground
FHoSS
SIPSEE
OCS / OCS X
Presence
XDMS
SER
SEMS
OSC
29
Integration of Partner Components _at_ FOKUS IMS PG
XDMS
Note This is not a complete Partner List!
30
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 RD projects on Feature
    Interaction and Service composition

31
Overview
  • How to stimulate IMS applications development?
  • IMS as SDP 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 _at_ FOKUS
  • Summary

32
Summary
  • Telecommunications is at crossroads
  • The internet and related IP-based technologies
    will change dramatically the service world
  • IMS is in the center of converging networks
  • IMS is a service platform framework harmonising
    the architectural thinking of different actors
    and forms the basis for NGN realisation
  • IMS as platform is not defining services (OMA
    does it partially by defining service enablers)
  • IMS killer applications remain unclear
  • but without IMS classic fixed and mobile
    operators will have a hard time competing against
    internet services and emerging VNOs
  • OSA/Parlay and ParlayX can act as the bridge
    towards the internet developer community and 3rd
    party service providers
  • ? More information at www.fokus.fraunhofer.de/ims

33
Any Questions?
34
The Presenter
  • Niklas Blum
  • Niklas Blum is a senior research scientist at the
    3G beyond division at the Fraunhofer Institute
    FOKUS, which also provides the national 3G beyond
    test and development centre in Germany.
  • His major research topics are applications and
    application provisioning for Next Generation
    Networks (NGN) using the IP Multimedia Subsystem.
    He is the author of several technical
    papers/articles.

35
For more Information ...
  • If you need further consultancy or onsite
    technical coaching, please contact

Prof. Dr. Thomas Magedanz TUB Chair Next
Generation Networks / Director FOKUS 3Gb
Division magedanz_at_fokus.fraunhofer.de 49
171 172 70 70 ( 49 30 3463 7229 Kaiserin
Augusta-Allee 31 14513 Berlin, Germany
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