报告人简历

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

3. Content • The Services Delivery Challenge • Services Infrastructure • Operators Choice • The PoC case study

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

5. Traffic Forecast for Mobile Services 350 300 Browsing & Download 250 Mbit/ User/ Month Messaging 200 Real-Time Multimedia 150 100 Voice (Minutes of Use x 9,6 kb/s) 50 0 2003 2004 2005 2006 2007 2008 Source: Siemens Mobile Networks Marketing, 2003 Note: Figures include consumer and enterprise traffic • 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

6. Services Presentation to the User conversational Usage Scenario interactive streaming IM background Push2Talk Video Conference Services Categories • 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 QoS real- time Audio Conversation Video Conversation • Services of different categories should be easy to use and presented seamlessly to the user Push2 Talk low delay Instant Messaging Video Streaming best effort SMS MMS Bandwidth

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 OPEXto earn money on low priced services as well

8. Content • The Services Delivery Challenge • Services Infrastructure • Operators Choice • The PoC case study

9. Network Elements for Mobile PS Services PSTN PLMN • The PS Domain provides connectivity to mobile services based on IP Terminals PS Domain RAN SGSN GGSN R IP Internet

10. Enabling Mobile Multimedia Services 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) SIP-enabled Terminals Conferencing Support Service Subscriptions FI Support SIP Session-Control Service-Control QoS-Control SIP RAN SGSN GGSN R IP Internet

11. Enabling Mobile Multimedia Services PSTN PLMN • Inter-working with PSTN / CS-voice services require a media gateway and a corresponding control function SIP-enabled Terminals ISUP Conferencing Support Gateway Control Function Service Subscriptions FI Support SIP SIP Session-Control Service-Control QoS-Control Media Gateway TDM SIP IP RAN SGSN GGSN R IP Internet

12. Enabling Mobile Multimedia Services HSS PSTN PLMN • 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 SIP-enabled Terminals ISUP IMS MRF Resource Function MGCF Gateway Control HSS Subscription Service SIP SIP CSCF Call Session Control Function MGW Media Gateway TDM SIP IP RAN SGSN GGSN R IP Internet

13. Enabling Mobile Multimedia Services HSS PSTN PLMN • 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, …) Enabling Service SIP-enabled Terminals SIP, SIMPLE, HTTP Location Server PS/LS ISUP Presence Server IMS MGCF HSS SIP CSCF SIP MGW TDM SIP IP RAN SGSN GGSN R IP Internet

14. Applications for Mobile Services HSS PSTN PLMN • The uniform infrastructure enables smooth integration of different services from the user perspective Applications … Service PoC Service Client IM Service SIP, HTTP Enabling Service SIP Terminals SIP, SIMPLE, HTTP Location Server PS/LS ISUP Presence Server IMS RTP MGCF HSS CSCF SIP MGW TDM SIP IP RAN SGSN GGSN R IP Internet

15. Content • The Services Delivery Challenge • Services Infrastructure • Operators Choice • The PoC case study

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

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

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

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

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) Expensive !! Lower OPEX and CAPEX Admin1 Admin2 Admin3 Admin Application A.1 Application A.2 Application A.3 Application A.1 Application A.2 Application A.3 Infra- structure Infra- structure Infra- structure Infra- structure If If If If Billing Billing

21. Service Evolution IMS mandatory IMS recommended IMS nice to have QoS real- time Audio Conversation Video Conversation PTT low delay IM Video Streaming best effort SMS MMS Bandwidth • 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. Content • The Services Delivery Challenge • Services Infrastructure • Operators Choice • The PoC case study

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 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 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. 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. 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. What is PoC? PoC – push to talk over Cellular What it is:

29. PoC as an example for work split IMS, Ut IMS, Gm IMS, ISC

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. Collaboration between 3GPP/2 and OMAThe 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. CCSA Workshop on OMA Beijing, 20 August 2003 Dirk Weiler <dirk.weiler@siemens.com> Vice President Standardization and Fora, Siemens Information and Communication Mobile Thank You for Your Attention! Service Delivery in IMS – the PoC case study