1. Service Delivery in IMS –the PoC case study DRAFT 1 报告人简历 Dirk Weiler ： Vice President of Siemens Information and Communication Mobile, based in Munich, Germany, is responsible for all standardization and fora activities of Siemens Mobile Networks worldwide. He has 18 years of experience in mobile communication. After his graduation in Physics from the University of Cologne in 1985, he started working for Siemens in the development of the analog mobile communication system C450. He hold various management positions in the areas of development, research, intellectual property, standardization and marketing. Since 1988 he has been working actively in standardization in ETSI, 3GPP, ITU, IETF.

2. DRAFT Service Delivery in IMS – the PoC case study CCSA Workshop on OMA Beijing, 20 August 2003 Dirk Weiler Vice President Standardization and Fora, Siemens Information and Communication Mobile

3. Service Delivery in IMS –the PoC case study DRAFT 3 Content The Services Delivery Challenge Services Infrastructure Operators Choice The PoC case study

4. Service Delivery in IMS –the PoC case study DRAFT 4 Services vision Bandwidth real- time low delay best effort QoS Video Conversation Video Conversation Audio Conversation Audio Conversation Video Streaming Video Streaming Instant Messaging Instant Messaging SMS MMS For increased ARPU beyond GSM/GPRS, UMTS (IMT-2000) service scenarios include any combination of applications / services presented seamlessly to the user For increased ARPU beyond GSM/GPRS, UMTS (IMT-2000) service scenarios include any combination of applications / services presented seamlessly to the user Push to Talk Push to Talk

5. Service Delivery in IMS –the PoC case study DRAFT 5 Operators need to get ready for an increasing mixture of services over the PS-Domain Real-time and peer-to-peer services are part of the scenarios Mbit/ User/ Month Browsing & Download Messaging Real-Time Multimedia Voice (Minutes of Use x 9,6 kb/s) Source: Siemens Mobile Networks Marketing, 2003 50 100 150 200 250 300 350 200320042005200620072008 0 Note: Figures include consumer and enterprise traffic Traffic Forecast for Mobile Services

6. Service Delivery in IMS –the PoC case study DRAFT 6 Services Presentation to the User UMTS (IMT- 2000) communication scenarios provide any combination of multimedia services Examples are: -text and picture messaging -voice and video conversation -streaming video -Voice, video and data conferencing Usage Scenario IM Push2Talk Video Conference Bandwidth real- time low delay best effort QoS Video Conversation Video Conversation Video Streaming Video Streaming Instant Messaging Instant Messaging SMS MMS Audio Conversation Audio Conversation Push2 Talk Push2 Talk conversational streaming interactive background Services Categories Services of different categories should be easy to use and presented seamlessly to the user

7. Service Delivery in IMS –the PoC case study DRAFT 7 Services Deployment and Operation To increase (and retain) the subscriber base operators are facing the following challenges: Enable instant deployment and upgrade of services to stay competitive Run on a large variety of multi-vendor devices -Mobile terminals -PDAs -PCs, Laptops Enable seamless service access for the roaming user Allow inter-working of services with other operators Low per-service CAPEX and OPEX to earn money on low priced services as well

8. Service Delivery in IMS –the PoC case study DRAFT 8 Content The Services Delivery Challenge Services Infrastructure Operators Choice The PoC case study

9. Service Delivery in IMS –the PoC case study DRAFT 9 Network Elements for Mobile PS Services GGSNRANSGSN PS Domain IP Internet R PSTN PLMN The PS Domain provides connectivity to mobile services based on IP Terminals

10. Service Delivery in IMS –the PoC case study DRAFT 10 Enabling Mobile Multimedia Services GGSNRANSGSN Internet Session-Control Service-Control QoS-Control Service Subscriptions FI Support R SIP IP PSTN PLMN Introducing multimedia and peer-to-peer services into the mobile PS- domain requires new mechanisms -Using the SIP Session Control is the industry trend -Basic service-support functions are required (e.g. Session- / Service- / QoS-Control, Authentication, Feature Interaction, Conferencing Support) Conferencing Support SIP-enabled Terminals

11. Service Delivery in IMS –the PoC case study DRAFT 11 Enabling Mobile Multimedia Services GGSNRANSGSN Internet Gateway Control Function Media Gateway PSTN PLMN SIP ISUP SIP IP TDM R Inter-working with PSTN / CS-voice services require a media gateway and a corresponding control function SIP-enabled Terminals Session-Control Service-Control QoS-Control Service Subscriptions FI Support Conferencing Support

12. Service Delivery in IMS –the PoC case study DRAFT 12 Enabling Mobile Multimedia Services GGSNRANSGSN Internet CSCF Call Session Control Function HSS Subscription Service HSS MRF Resource Function MGCF Gateway Control MGW Media Gateway PSTN PLMN SIP ISUP SIP SIP-enabled Terminals IMS IP TDM R The “IP Multimedia Subsystem” (IMS) standardized by 3GPP provides the required service support functions The resulting benefits for the operator are: -service support functions are implemented once and utilized by many applications, thus -reducing implementation time and effort for the applications -the standard enables multi-vendor environment -standardized future proof architecture

13. Service Delivery in IMS –the PoC case study DRAFT 13 Enabling Mobile Multimedia Services GGSNRANSGSN Internet MGCF MGW PSTN PLMN ISUP IMS IP TDM Further Enabling Services added to the infrastructure serve as advanced building blocks for mobile applications Scenarios might include the use of different protocols (SIP, http, …) SIP, SIMPLE, HTTP Location Server Location Server Presence Server Presence Server EnablingService R SIP SIP-enabled Terminals PS/LS CSCF HSS SIP

14. Service Delivery in IMS –the PoC case study DRAFT 14 … Service … Service Applications for Mobile Services GGSNRANSGSN Internet MGCF MGW PSTN PLMN ISUP IMS IP TDM SIP, SIMPLE, HTTP Location Server Location Server Presence Server Presence Server EnablingService R SIP SIP Terminals PS/LS CSCF HSS SIP RTP Applications Client SIP, HTTP PoC Service PoC Service IM Service IM Service The uniform infrastructure enables smooth integration of different services from the user perspective

15. Service Delivery in IMS –the PoC case study DRAFT 15 Content The Services Delivery Challenge Services Infrastructure Operators Choice The PoC case study

16. Service Delivery in IMS –the PoC case study DRAFT 16 Choice of Business Model #1 “Service completely hosted by MNO” Peer to Peer Service access Alternative Access IMS UMTS/ GPRS Enabling Services HLR HSS MNO Services Internet Services MNO WLO Telco ISP/ASP GW PSTN xDSL GW FW WLAN user pays for service and access GW Intranet Services LAN Enterprise GW FW GWGateway FW Firewall The MNO is able to expand the value chain including higher value services End to End service delivery by MNO Alternative services access possible

17. Service Delivery in IMS –the PoC case study DRAFT 17 Choice of Business Model #2 “MNO provides services with partners” Peer to Peer Service access Alternative Access IMS UMTS/ GPRS Enabling Services HLR HSS MNO Services MNO WLO Telco ISP/ASP GW PSTN xDSL WLAN user pays for service and access GW Intranet Services LAN Enterprise GW FW GWGateway FW Firewall The MNO is able to maintain full business relationship to the user while including 3 rd party services in his portfolio Partner Services GW FW GW FW Service Contract Revenue Share User authentication and charging by MNO Alternative services access possible

18. Service Delivery in IMS –the PoC case study DRAFT 18 Choice of Business Model #3 “MNO provides access only” Peer to Peer Service access Alternative Access IMS UMTS/ GPRS Enabling Services HLR HSS MNO Services MNO WLO Telco ISP/ASP GW PSTN xDSL WLAN user pays for access GW Intranet Services LAN Enterprise GW FW GWGateway FW Firewall The MNO provides access only (“Bit Pipe”) Partner Services GW FW IP-based Multimedia user pays for service Access business separated from services business Operator provides access to the Internet allowing mobile customers to choose from any (competing) services in the web

19. Service Delivery in IMS –the PoC case study DRAFT 19 Operators Decision Points IMS Do we want to deploy IP based real-time and non-real-time multimedia services? Do we want to mix service categories (conversational, streaming, messaging) for multi-modal communication? New MNO business opportunities Do we want to control the new services beyond providing the bit-pipe? MNO’s choice of business model Do we want to use standardized components? Do we want to provide these services on a homogeneous infrastructure? Best practice

20. Service Delivery in IMS –the PoC case study DRAFT 20 Single Platform Advantage Single infrastructure reduces OPEX -Single type of interfaces to Admin and Billing -Central subscriber data base Single infrastructure reduces CAPEX in the long term -less effort to implement -less effort to adapt to existing components Single infrastructure enables inter-working between applications -Common functions (e.g. group management) -Common status information (e.g. presence, location) Application A.1 Application A.1 Admin1 Billing If Application A.2 Application A.2 Application A.3 Application A.3 Infra- structure Admin2 Admin3 Infra- structure Infra- structure Expensive !! Application A.1 Application A.1 Billing If Application A.2 Application A.2 Application A.3 Application A.3 Admin Infra- structure Lower OPEX and CAPEX

21. Service Delivery in IMS –the PoC case study DRAFT 21 Service Evolution Bandwidth real- time low delay best effort QoS Video Conversation Video Conversation Audio Conversation Audio Conversation Video Streaming Video Streaming IM SMS MMS PTT IMS nice to have IMS recommended IMS mandatory Stronger demand for an IMS control infrastructure when moving towards real-time services (e.g. Voice, Video, Conferencing) Starting early on IMS avoids a change of the entire infrastructure later!

22. Service Delivery in IMS –the PoC case study DRAFT 22 Content The Services Delivery Challenge Services Infrastructure Operators Choice The PoC case study

23. Service Delivery in IMS –the PoC case study DRAFT 23 Market expectations on service delivery Support of new business models Enable easy service development Support of fast service deployment Enable innovative mobile multimedia services like  Customized infotainment (gaming)  Enhanced voice/video communication over IP (push-to-talk)  Integrated services for -Enterprises (integrated calendar services) -Mobile business workers (mobile intranet) -Consumers (click to call from web pages)  Streaming of voice/video Support flexible charging and m-payment Support quality of service Provide global roaming

24. Service Delivery in IMS –the PoC case study DRAFT 24 Service delivery in 3GPP (IMS) 3GPP addresses some of these market expectations 3GPP specifies the IP Multimedia Subsystem (IMS) that provides  Architecture for the realization of multimedia services  Framework for charging  Roaming  Security  Mechanisms for service provisioning by 3rd parties –IMS services/functions Presence Messaging Group management Conferencing –IMS capabilities Session management User data access Event subscription and notification Authentication

25. Service Delivery in IMS –the PoC case study DRAFT 25 Service delivery in OMA OMA aims at addressing all market expectations OMA specifies a service environment that comprises  Mechanisms for service provisioning by 3rd parties –Service enablers Location Presence and availability Messaging –Common functions (tbd) Authentication Charging...

26. Service Delivery in IMS –the PoC case study DRAFT 26 Relation and overlap of domains Currently the specification work of 3GPP partly overlaps with OMA activities –Degree of overlap varies and depends on particular issues –A straight demarcation line cannot be introduced at present

27. Service Delivery in IMS –the PoC case study DRAFT 27 Adjust the scope of 3GPP and OMA The goal –Establish continuity of standardization process –Prevent fragmentation of standards –Consistent reuse of 3GPP IMS capabilities and mechanisms by OMA service enablers (e.g. Push-to-Talk over Cellular, Instant Messaging, Presence) The benefit –Accelerate the service enablers definition process by leveraging IMS capabilities in an interoperable way –Protect heavy investments in standardization efforts and product development of IMS –Save resources by avoiding duplcation of work

28. Service Delivery in IMS –the PoC case study DRAFT 28 What is PoC? PoC – push to talk over Cellular What it is:

29. Service Delivery in IMS –the PoC case study DRAFT 29 PoC as an example for work split IMS, ISC IMS, Ut IMS, Gm

30. Service Delivery in IMS –the PoC case study DRAFT 30 Relation of IMS and PoC PoC client - SIP/IP Core  POC Is = IMS Gm -Session signaling, authentication, registration SIP/IP Core – PoC Server  PoC If = PoC ISC -Service signaling and charging PoC Client – Group List Management Server  PoC Im = IMS Ut -Group management

31. Service Delivery in IMS –the PoC case study DRAFT 31 Collaboration between 3GPP/2 and OMA The way forward Compatibility of release schedules  Ensure mutual visibility and communication of Work Programme and Work Items Visibility of each other’s WI progress  Mutual information on a periodic basis of specific WI status and progress  Establishment of coordinators on WG/WI level Avoid additional/unnecessary requirements documents  Exchange information on periodic basis of requirements documents and their current status Resolving interaction with common third parties  Agree on which organisation is the lead contact into specific third organisations to ensure consistency of inputs Avoiding duplication of work  Need to review current list of WIs to identify any overlap  Identify in which organisation each work area is best performed and identify a single responsible group

32. DRAFT Service Delivery in IMS – the PoC case study CCSA Workshop on OMA Beijing, 20 August 2003 Dirk Weiler Vice President Standardization and Fora, Siemens Information and Communication Mobile Thank You for Your Attention!