The Importance of OSA/Parlay in the Service Network Evolution

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@fokus.fraunhofer.de www.fokus.fraunhofer.de/ims 1

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 2

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 3

Network Generation Network Vision Mobility and QoS enabled IP core Simplified service provisioning independent of access UMTS CDMA WLAN WiMax POTS/ ISDN Wireline xdsl GSM EDGE IP Network mobility-enabled other Common Applications and Services 4

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 6

Communications Landscape Is Changing The IT Community Rich in Applications and Creativity The Telecom Community Rich 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 7

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. 8

IMS Layers: Transport, Session Control, Apps Application Plane SIP AS SIP AS Control Plane HSS P-CSCF I-CSCF MRFC S-CSCF SIP RTP Diameter MEGACO User Plane MRFP B-GW PSTN 9

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). 10

Application Plane Niklas Blum Fraunhofer FOKUS 2006 IMS Application Server Options Today s focus Parlay API OSA/Parlay AS CAMEL SIP AS OSA GW IM-SSF API CAP Control Plane HSS P-CSCF I-CSCF S-CSCF Local AS SIP RTP Diameter User Plane MRF B-GW PSTN 12

OSA / Parlay AS (3rd Parties) Service Delivery Platform Cx = (Application Server) Parlay App 1 Parlay App 2 Parlay App 3 HSS Diameter Sh = Diameter S-CSCF SIP-Server Service Platform Trigger Points Parlay API (MPCC, MMM, Pres, Charg,... SIP Interface ISC Diameter Parlay X App 1 Parlay X App 2 Parlay X GW Ro + Rf = Diameter Online &Offline Charging (ECF, CCF) Other access networks SIP S P T Filter criteria 13

NGN/IMS Applications 14

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 16

OMA PoC Architecture Rel. 1 (2005) Used Protocols: SIP RTP/RTCP RTCP XCAP 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 Source: OMA/PoC Candidate Version 1.0 17

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! 18

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 19

Community Services across different Networks Community Service Providers SIP AS OSA AS WS Clients JAIN SLEE Community Client GUI HTTP XCAP SIP RTP Community Feature ISC Framework UDDI Community Feature OSA/Parlay Identity Management Community Feature Parlay X Community Framework Policy Enforcement (OMA OSE) Service Enabler RA Media Presence GLMS Messaging Server HSS IMS Core P/I/S-CSCF,MS,MG IN Platforms WLAN UMTS DSL GSM ISDN 20

Community Example: Push-to-Share ParlayX Interfaces 21

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 @ FOKUS Summary 22

Fraunhofer FOKUS Facts FOKUS has been founded 1988 in Berlin, Germany 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 23

3G beyond Testbed @ Fraunhofer FOKUS mhealth mgov mxxx. weitere weitere Other Apps Applications Web services 3Gb Roaming UMTS FDD/ TDD European 3Gb R&D Projects Parlay Playground National 3Gb R&D Projects Parlay GSM / GPRS IMS Service Platforms & Middleware WLAN a/b/x AAA DVB- S/T SIP IMS Playground Other weitere platforms weitere Other Netws Engineering Tools,Conformance Testing, Measurments, and Management 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 3Gb Network Technologies www.fokus.fraunhofer.de/national_host 24

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 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 25

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 26

FOKUS Components in the IMS Playground FHoSS SIPSEE OCS / OCS X SER OSC SEMS 27

Integration of Partner Components @ FOKUS IMS PG Note: This is not a complete Partner List! 28

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 and Service composition 29

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 NGNs supporting 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 31

Any Questions? 32

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. 33

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@fokus.fraunhofer.de ❾ +49 171 172 70 70 +49 30 3463 7229 Kaiserin Augusta-Allee 31 14513 Berlin, Germany 34