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ICT & OSA / Parlay Workshop Campinas/Sao Paulo, Brazil, March 22nd, 2006. Niklas Blum TU Berlin / Fraunhofer FOKUS [email protected] www.fokus.fraunhofer.de/ims. The Importance of OSA/Parlay in the Service Network Evolution. Overview. How to stimulate applications development? - PowerPoint PPT Presentation

Text of Niklas Blum TU Berlin / Fraunhofer FOKUS [email protected] fokus

2-stündige OKS Vorlesung / Kompaktkurs im Sommersemester 2000ICT & OSA / Parlay Workshop Campinas/Sao Paulo, Brazil, March 22nd, 2006
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
Abstract
The main concern of this course is the "Intelligent Network (IN)" as one of the proposed and implemented solutions for a universal telecommunications environment. We will provide an overview of the current state-of-the-art in the area of IN, taking into account the historical evolution, standards and future trends. The tutorial is divided into two separate courses,namely:
1. IN basics & standards,and
2. IN evolution.
In this course we look at the motivation for IN, present the basic principles of the IN concept and provide a technical overview of what IN is, as it is widely understood today. This understanding is reflected in current international IN standards as defined in ITU-T IN Capability Sets 1 - 3.
Taking into account that the IN is designed as an evolvable solution, the second course looks at requirements of future application domains (e.g. mobile communications, broadband networks, Internet) and emerging technologies (e.g. object oriented middleware and agent technology).
For further details of these courses contact the course presenter Dr. Thomas Magedanz ([email protected]).
Note that the contents of this course book is subject to copyright!
No part of this book may be reproduced or used in any fom or by any means - graphic, electronic, or mechanical, including photocopying, recording, taping, or information storage and retrieval system - without prior written permission of the author.
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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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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 (Plug&Play 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!
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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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
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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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
*
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
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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Standards that facilitate the convergence
of the IT and Telecom communities
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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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.
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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User Plane
Application Plane
Control Plane

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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 (IETF’s) SIP and DIAMETER (MAP and CAP are also important).
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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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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Online &Offline
SIP Interface
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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
*
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 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
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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XML Dokument Management Enabler
Presence Enabler
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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!
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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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
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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Community Service Providers
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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
*
220 employees: scientists, students, technicians originating from 30 nations
FOKUS is THE Telecoms R&D institute within the Fraunhofer 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 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 R&D projects
Key to success: Strategic Partnerships with big players (DTAG, NTT, etc)
Main R&D Vision: „I-centric communications“ and „autonomic communications“
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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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
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
Products &
Pre-products
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IMS Playground @ 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
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
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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
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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SEMS
FHoSS
SER
SIPSEE
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Note: This is not a complete Partner List!
XDMS
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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 and Service composition
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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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 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
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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.
T. Magedanz (TUBerlin / Fraunhofer FOKUS) - 2005
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For more Information ...
If you need further consultancy or onsite technical coaching, please contact:
Prof. Dr. Thomas Magedanz
* [email protected]
( +49 30 3463 7229
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