Business Considerations for Migration to IMT PDF Free Download

Business Considerations for Migration to IMT-2000 Bosco Eduardo Fernandes Siemens AG, ICM N PG SP NI IB Vice President International Affairs Email:bosco.fernandes@siemens.com

ontent The Services Delivery Challenge Services Infrastructure IMS Mechanisms Operators Choice Conclusions

ervices vision QoS realtime Audio Conversation Video Conversation low delay Instant Messaging Push to Talk Video Streaming 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

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

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

ervices Deployment and Operation To increase (and retain) the subscriber base operators are facing the following challenges: nable instant deployment and upgrade of services to stay competitive un on a large variety of multi-vendor devices Mobile terminals PDAs PCs, Laptops nable seamless service access for the roaming user (VHE) llow inter-working of services with other operators ow per-service CAPEX and OPEX to earn money on low priced services as well

ummary: Key Success Factors Enable smooth integration of different services from a user perspective Expand the value chain including higher value services Build on existing MNO assets (authentication, charging,.. to create a competitive advantage in service deployments Enable access to services from a large device base Flexible concept to include 3 rd party services Keep CAPEX and OPEX low while deploying multiple new services

ontent The Services Delivery Challenge Services Infrastructure IMS Mechanisms Operators Choice Conclusions

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

nabling Mobile Multimedia Services Introducing multimedia and peer-to-peer services into the mobile PSdomain requires new mechanisms SIP-enabled Terminals - 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 Service Subscriptions FI Support SIP Conferencing Support Session-Control Service-Control QoS-Control PSTN PLMN R RAN SGSN GGSN IP Internet

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

nabling Mobile Multimedia Services The IP Multimedia Subsystem (IMS) standardized by 3GPP provides the required service support functions The resulting benefits for the operator are: SIP-enabled Terminals - 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 IMS HSS Subscription Service SIP HSS MRF Resource Function CSCF Call Session Control Function SIP MGCF Gateway Control M Media Gateway ISUP TDM PSTN PLMN R IP RAN SGSN GGSN IP Internet

nabling Mobile Multimedia Services 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, ) PS/LS SIP R SIP, SIMPLE, HTTP IMS SIP HSS Location Presence Server HSS Server Server CSCF Enabling Service SIP MGCF M ISUP TDM PSTN PLMN IP RAN SGSN GGSN IP Internet

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

ummary: IMS as the service infrastructure (1) Enable smooth evolution from existing base of GSM/GPRS to UMTS/IMT-2000 (W-CDMA, TD-SCDMA, EDGE/GERAN) Support multi-vendor environment (open interfaces) Inter-working with CS fixed and mobile networks Future proof architecture with SIP protocol Flexible concept to include 3 rd party services Use proven GSM evolved mobility management

ummary: IMS as the service infrastructure (2) IMS is an essential part of the 3GPP Release 5 mobile network specifications, approved in 2002 3GPP Release 5 is an ITU IMT-2000 family member, described by ITU-T Rec. Q.1741.3 which has been consented for approval by ITU-T SSG in June 2003 Recommendation Q.1741.3 specifies IMS in terms of the 3GPP network architecture, Core Network entities and interfaces supporting IMS Stage 1, 2, 3 specifications, including protocol elements, charging, security for IMS Hence IMS is an existing ITU-T standard already

ontent The Services Delivery Challenge Services Infrastructure IMS Mechanisms Operators Choice Conclusions

Single Sign On r IMS-based Services S subscribers are authenticated only once he CSCF invokes the Application Server (AS) only after the successful subscriber authentication pplication Servers (AS) do not have to authenticate the subscriber again he standardized SIM-based user authentication method ensures a high security level and is independent of the underlying access network Operators Network Clients UMTS/ GPRS PS Domain IP SGSN HLR GGSN HSS CSCF IMS AS AS AS

LAN access to IMS Services S based services can be offered to users through different access networks (e.g. GPRS, UMTS, EDGE, WLAN, Fixed Network) LAN is one of the possible mobile access methods to IMS services (e.g. in hotels, airports or from home) eer to peer voice and video service control is performed by the IMS based on the same feature set. This is independent of the underlying transport network Home Network Clients WLAN BS LAN Access Router PS Domain HLR HSS AAA PD CSCF IMS MGCF AS he Packet Data Gateway (PD) supports VPN (IPsec) and the authentication via AAA/HSS

S Domain Roaming CS Domain Roaming ensures the availability of voice services for IMS subscribers when UTRAN/PS-Domain coverage is not available Terminating Services can still be executed in the IMS before the call is forwarded to the IMS subscriber who is roaming in the visited network Home Visited 2G HLR PS Domain HSS GSM CS Domain MAP ISUP MGCF IMS CSCF TDM Bearer M IP GGSN This concept supports the phased introduction of UTRAN/PS- Domain/IMS as a unified network infrastructure for voice and data services since full UTRAN/PS-domain coverage does not have to be available form the beginning

S Roaming The 3GPP standard includes IMS roaming IMS roaming enables optimised routing of IMS bearer traffic (e.g. peer to peer voice traffic routed directly between the visited networks) Optimised Routing leads to OPEX savings The visited MNO (hosting the P-CSCF) is able to offer local services to roaming IMS subscribers UMTS/ GPRS Visited A PS Domain GGSN P-CSCF Home A IMS S-CSCF UMTS/ GPRS Visited B PS Domain GGSN P-CSCF Home B IMS S-CSCF Bearer Traffic Signaling

harging of PS-Services Usage Scenario IM Video PTT Conference Differentiated Charging Event Content Apps Session Time Media Transport Volume QoS Billing itemized bill to the enduser S enables standard charging methods to support differentiated billing (volume, event, session and any combination) ifferentiated billing for different types of services allow competitive billing strategies

ummary: IMS Mechanisms IMS enables the operator to build up new IP-based mobile services and applications under his control IMS provides the capability to offer any mixture of peer to peer real-time and non-real-time services to increase ARPU and reduce churn rate The IMS based highly scalable common service control infrastructure helps the operator to keep OPEX low while deploying new services rapidly Using an IP-transport network supports the fix/mobile convergence of those services by enabling access over any network Faster implementation of applications by re-using IMS service support functions leads to CAPEX savings IMS service support functions provide value-add

ontent The Services Delivery Challenge Services Infrastructure IMS Mechanisms Operators Choice Conclusions

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

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

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

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

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

ervice Evolution QoS realtime low delay best effort SMS IM Audio Conversation MMS IMS mandatory PTT IMS recommended IMS nice to have Video Conversation Video Streaming 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!

ummary: Operators Choice ny operator willing to expand on his PS-Domain business beyond Bit-Pipe, must build up a services infrastructure eal-time and peer to peer services will be part of the operator s portfolio S is designed to allow most efficient deployment of those new services he early decision for the right infrastructure is crucial to the future deployment of seamless services

ontent The Services Delivery Challenge Services Infrastructure IMS Mechanisms Operators Choice Conclusions

onclusions (1): Summary GPP open multi-vendor standards ensures no lock-in to a particular vendor or radio technology GPP2 will use IMS as developed and evolved by 3GPP pen Mobile Alliance (OMA) is using IMS as basis for access independent services S already common platform for mobile networks S concepts can be applied to Wireline (fixed) networks for Seamless Service Delivery as well S can become THE common platform (for the migration from legacy fixed networks there is still work to be done).

onclusions (2): Role of ITU-T for eamless Service Delivery iven that: U has extensive leadership in fixed networks S leadership is with 3GPP pen Mobile Alliance is also working on access independent services he environment for fixed and mobile networks is different (legacy systems, regulation, competitive environment, operators/share-holders, ) ather than trying to create unique NGN ecommendations for fixed/mobile/ networks, t is more effective to accept ITU/3GPP/OMA core ompetencies and better leverage collaborations!

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