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IMS Assuming an
 Important Role
     on LTE
    Alberto Boaventura
      alberto@oi.net.br
      0 31 21 8875 4998
Mobile Broadband Industry Consolidation
                               2500 MM        Mobile Internet Accesses
                                              surpass Desktop Internet
   Global Internet is still    2000 MM                Accesses
         growing :
  1.8B Users, +13% Y/Y 18.8T   1500 MM
   Minutes Spent, +21% Y/Y
                               1000 MM
     But, mobile will be
                               500 MM
     preferable access
         in 4 Years              0 MM
                                         2007E 2008E 2009E 2010E 2011E 2012E 2013E 2014E 2015E

                                            Mobile              Desktop        Source: Morgan Stanley 2010




     Revenue forecast per
       application type
         2008-2015




                                                                                         Source: Ericsson 2010



    The MBB is rapidly consolidating, and in couple years will be the
     preferable Internet access. Despite of that, voice services still
 represents the most important part of revenue, but it is being replaced
                  by the new communication types …
                                                     Diretoria de Engenharia e Operações – Planejamento Técnico
Mainframe-> Mini-> Desktop -> Smartphones/Tablets

                                    5 convergence trends: MBB + Social
                                   Networking + Video + VoIP + usability in
                                           differentiated devices

                                                                                      Mobile
                                                                                     Internet


                                                                         Internet


                                                             Desktop

                                                  Mini                               10 B+
                                     Mainframe


                                                                          1 B+




                                                            100 MM+
                                      1 MM+      10 MM+



                                      1960       1970        1980       1990         2020+
                                                                         Source: Morgan Stanley 2010

     The expressive Mobile Internet growth projection is justified by
 integration of functionalities (for personal use) in a single device, and
becoming in next years the preferential Internet device against desktops.
                                                 Diretoria de Engenharia e Operações – Planejamento Técnico
Market is eager for more thoughput
                                                                 Rel 9 HSPA+     Rel 10 LTE
  TV 3D                                                         DL: 84 Mbps     DL:> 1 Gbps
               HDTV                                             UL: 23 Mbps     BW: 100 MHz
                                                                BW: 10 MHz      LTE Advanced
  Rubust
             On-Demand     Augmented                             Rel 8 HSPA+      Rel 8 LTE
  Gaming
                             Reality
                                                                DL: 42 Mbps     DL: 326 Mbps
                                                                UL: 11,5 Mbps   UL: 86 Mbps
  Video         P2P                                             BW: 5 MHz            20 MHz
Conference                Virtualization
                                             Visual     Mbps+
                                           Networking
                                                                 Rel 7 HSPA+
              Mobile TV
 Internet                                                       DL: 28 Mbps
                          Collaboration      M2M                UL: 11,5 Mbps
                                                                BW: 5 MHz

               Music         Games                      Mbps
                                            Social               Rel 6 HSPA
   MMS
                                           Networks
                                                                DL: 14 Mbps
               Email      Mobile Web                            UL: 11,5 Mbps
                                                                BW: 5 MHz


                                                                    EDGE
 Telemetry     LBS/GPS                                  kbps
                                                                DL:237 kbps
                                                                UL:59 kbps
                              EMS
                 IM                                                 GPRS
   SMS                                                          DL:80 kbps
                                                                UL:20 kbps


 The operators are still intensively investing in network infrastructure
and new band licenses in order to follow continuous market anxiety for
                            more throughput. de Engenharia e Operações – Planejamento Técnico
                                             Diretoria
Web Based Services
                                                                            Web Services:
                                                                            • Lower Costs
                                                                            • Minimum Risk
                                                                            • Advertisement and Lower
                                                                              Tariff Business Model
                                                                            • Most important Telco
                                                                              threat



                                                                            Opeator Network:
                                                                            • OPEX
             Operator Transport Network                                     • CAPEX
                                                                            • License Obligations
  SGSN/MME

                                          MSAN/AGW
                             ONT


                                                                           Operator Customers:
                             ONU            modem
                                                                           • Contract Obligations
                                                                           • License Obligations
                                                                           • Customer Prospect Cost
  HSPA/LTE   Wi-Fi          FTTx             xDSL
                                                                           • Price Competition


 But higher throughput enables services in the new web industry (over
 the top), impacting severely the traditional operator business models.
                                                     Diretoria de Engenharia e Operações – Planejamento Técnico
Traffic and Revenue decoupling
    Rapid and consistent mobile broadband consolidation, air interface
    technology advances, machine type communication and new smart
    devices will bring a tsunami of IP data traffic. In the same time, high
   competition with lack technology barrier force a rapid service lifecycle
      and new services becomes mature quickly, with low profitability.

                                             Traffic




                                                       Revenue




                      Voice Dominant      Data Dominant




    New challenge: how to be profitable in data era?

                                             Diretoria de Engenharia e Operações – Planejamento Técnico
IP Multimedia Subsystem
                                                                                                 Control
                                          New Service Creation
                                                                                                 User Data
                                            Self Provisioning
                                             Service Portal
   Transport
 Service Only!!!
                                                 Billing                         IMS
                                                   QoS

                                             Session Control

                                          Service Access Control           Transpor t Network
        Transpor t Network

                                           Privacy and Security


                                               Multimedia
                                                                                Access
             Access
                                                                                Network
             Network                         Internet Access                                    ONU
                             ONU


                                           Transport Network

                                                                     HSPA/LTE                   FTTx
  HSPA/LTE                   FTTx            Access Network


     IMS is the most impressive and complete framework that allows
      operator to offer differentiated services, controlled by network,
     guarantying customer service experience and investment value
                                  protection Diretoria de Engenharia e Operações – Planejamento Técnico
What is IMS role in LTE?
 GSM/GPRS/EDGE
              Call Session Control, or core of IMS,
                                            MSS
                                                                               GMSS
     Um      BTS                          (SR-VCC)                                  Policy   & Charging Control, introduced at
           responsible for establishing, billing, event
                                  BSC                                         (MGCF)
               coordination, media and resources                                     beginning of IMS architecture, responsible
                                                                                                    PLMN/
             controlling and service development in                                  to manage properly the network resources
                                                                                                   PSTN/SS7
           order to fulfill the serviceAand application
                        A-Bis                                                           based on service level requirements.
                           requirements.            C/D                      C/D         PCC gives to user applications the
                                                                                          Mc
                                         IuCS
            In LTE, the IMS will replace the existing                                required and fair network resources based
                                                                                                      MGW
                  switch offices in CS Domain.
                                               Gs/Gd/
                                                                       HSS               on service business requirements.
                                               Sv/SGs
 UMTS/HSPA/HSPA+
                                          Gb                                         GGSN
      Uu                                         Gr                          Gc
                                                                                   (P-GTW)

                                                        Gn                                                 Internet
                          Iub          IuPS          GTP-U                                      Gi
              NodeB              RNC       SGSN
                                         (MME/SGW)
                                                                   Mg

                                                                  Cx                Gm               Gx

  LTE/EPS
                                                                       Mw                Rx
      Uu
                                                       There is no CS domain inPCRF The CS
                                                         S-CSCF    P-CSCF        LTE.
                                                     services, such as TDM calls and SMS, will
                                                                    Mw
                                                                                  Gy
                           S1                        be replaced (or migrated to) by services
                                                             ISC
             ENodeB                                       under IP network environment.
                                                                                           Ro


                                                             AS                   I-CSCF             OCS       IMS

  IMS will not only enable the multimedia services, but this is one of the most
powerful tool for capturing opportunities and any service lifecycle stage: Rating
   and charging services for developing compelling and competitive revenue
                                    models.     Diretoria de Engenharia e Operações – Planejamento Técnico
Is LTE proper to transport voice services?
                                                                                                  200kHz
 GSM/GPRS/EDGE                                                                      0     1   2    3   4   5    6      7
     Um     BTS                           MSS/MGW
                            BSC
                                                       PLMN/           Logical and physical channels are
                                                      PSTN/SS7         structured in 8 TS, named TRX. The TRX
                    A-Bis           A                                  capacity is 2,5 Erl @ 1% GoS
                                                 C
                                                                       Services based on deterministic TDM
                                                                       network.
                                           HLR                         The spectral efficiency is 9 users per MHz


 UMTS/HSPA/HSPA+
     Uu    NodeB
                                          MSS/MGW
                            RNC                                                                    3,84MHz
                                                       PLMN/            Each 5MHz (3,84 MHz) carrier is able to
                                                      PSTN/SS7          transport 125 voice channel. But the RF
                     Iub          Iu-CS
                                                 C                      limitation this number is around 60
                                                                        channels, that corresponds 47Erl @ 1%
                                                                        GoS
                                           HLR
                                                                        The spectral efficiency is 20 users per MHz

                                                                                         180 kHz
 LTE/EPS
     Uu                                                                                                        Freq.
                      MME/S/PGW                                             TTI/2
                                                       PLMN/
                                          IMS
                                                                                    T.
                                                      PSTN/SS7
                    S1      S1    Sgi/                                 There is no dedicated resources (channels)
           ENodeB                 Gm          Cx/Sp                    for voice transport in LTE. The voice
                                                                       services are based on VoIP, and the capacity
                                   S6a
                                                                       is function of statistical multiplexing
                                           HSS                         premises.
                                                                       The spectral efficiency is 80 user per MHz
                                                                 Diretoria de Engenharia e Operações – Planejamento Técnico
Path to Support Voice and Legacy Services




     Voice over
                      CSFB                            VoLTE
     CS Domain




                      VoLGA




                              Diretoria de Engenharia e Operações – Planejamento Técnico
What is Circuit Switch Fall Back (CSFB)?
  LTE
                   Uu


                                                                                                 PLMN/
                                                                       SGs
                                                                                                PSTN/SS7
                                              S1                       SGs
                                 ENodeB                 MME/SGW/PGW                MSC
                                                                                          C


                                                                                           HLR/HSS/AAA

 GSM/UMTS                                                              A/Iu-CS
                  Um/Uu




                                             Abis/Iub
                               BTS/NodeB                  BSC/RNC




► Defined in 3GPP TS 23.272, represents a short term solution for voice and legacy services
  supporting in LTE network.
► Consists to redirect from LTE network any service based on CS domain (voice or SMS) to
  2G/3G network
► Requires SGs interface activation for terminating services.

                                                             Diretoria de Engenharia e Operações – Planejamento Técnico
What is VoLTE?
                                                                                     SCC AS
  LTE                                                                                  TAS
                   Uu

                                                                                                          PLMN/
                                                                                    IMS                  PSTN/SS7
                                              S1                Gm/Rx/SGi                       PSTN
                                 ENodeB                 MME/SGW/PGW
                                                                                          Cx/Sp
                                                                            I2/I3

                                                                                             HLR/HSS
                                                                          Sv/SGs             AAA/SPR

 GSM/UMTS
                  Um/Uu                                                                     C          PSTN




                                             Abis/Iub                 A/Iu-CS
                               BTS/NodeB                  BSC/RNC                     MSC
                                                                                    SR-VCC


► VoLTE is a GSMA and 3GPP conjunction initiative, supported in 3GPP IMS recommendation
  framework, which architecture is defined IR.92 based on 3GPP TS 23.002 and TS 23.228.
► 3GPP vision for voice service support in LTE
► Needs Applications Servers for Service Centralization and Continuity (SCC), Telephony
► The service continuity and handover are guaranteed by SR-VCC (Single Radio Voice Call
  Continuity), defined in 3GPP TS 23.216, using a special interface between MME and MSS, Sv,
  for call achoring.
                                                             Diretoria de Engenharia e Operações – Planejamento Técnico
What is VoLGA (Voice over LTE via Generic Access)?

  LTE
                   Uu

                                                                                                           PLMN/
                                                                                                          PSTN/SS7
                                             S1           SGi/Sv          A/Iu-CS
                                 ENodeB       MME/SGW/PGW          VANC                  MSC
                                                                                    D’         C


                                                                                                   HLR/HSS/AAA

 GSM/UMTS                                                                 A/Iu-CS
                  Um/Uu




                                              Abis/Iub
                                BTS/NodeB                BSC/RNC




► Based on Generic Access Network interface defined in 3GPP TS 43.318 and 23.879 for CS
  services over PS domain.
► Not totally standardized, and there is no formal references in 3GPP, however there is specific
  forum, with set of operators and suppliers participation: VoLGA Forum.
► Needs a specific network element: VANC (VoLGA Access Network Controller).
► Supports handover, but it needs huge integration job
                                                             Diretoria de Engenharia e Operações – Planejamento Técnico
Strengths & Weaknesses

                            CSFB                               VoLTE                                 VoLGA
               No IMS investment                   Voice and data services can be     No IMS investment
                                                   delivered in the same network
               3GPP standard, and widely
  Strengths




               supported in several vendors ->     No need CS domain.
               no roaming problems




               Data sessions can be                Requires IMS introduction or       Not standardized by 3GPP
               interromped during the voice        expansion
               calls.                                                                 Only a single operator announced
                                                   In the first moment will not be    support
                                                   ubiquitous and there will be
  Weaknesses




               Long call establishment time (at    roaming problems.                  Needs terminal support.
               least 3 seconds more);
                                                                                      Solves the problem for CS domain
               Não utiliza os benefícios da alta                                      (legacy services)
               eficiência espectral do LTE;




                                                                            Diretoria de Engenharia e Operações – Planejamento Técnico
Concerns for VoLTE

► Interconnection (ITX)
    – It is imperative to standardize a technical model to be followed by
      operators for network integration and interconnection:
        •   User and control plan protocols
        •   Visited and home network models
        •   QoS
        •   Service transparency
    – GSMA is working in a set of recommendations that are being
      synthesized in IR.34 and IR.88.
    – And in Brasil? And in Latin America?

► Roaming
    – It is important to create business models in order to be consistent with
      financial and revenue sharing premises;
    – GSMA created an interconnection model called IPX (IP eXchange), GRX
      successor, for IP, VoIP and IMS interconnection services;
    – And in Brasil? And in Latin America?


                                              Diretoria de Engenharia e Operações – Planejamento Técnico
But IMS is not VoLTE only




             3GPP ICS (IMS Centralized Services)



         3GPP MMTEL (Multimedia Telephony Services)



            GSMA RCS (Rich Communication Suite)




                                    Diretoria de Engenharia e Operações – Planejamento Técnico
IMS Centralized Services
                                                             SCC AS (Service Centralization & Continuity) AS
► Specified in 3GPP TS 23.292, provides all service          ICS User Agent
  redefinitions, including over CS domain, for               CS Access Adaptation
  developing based on IMS.
                                                             Service control funcionalities (I1): Registration, Call
                                                             Control,Service Continuity
► All network services are provided via IMS
     –   Existing basic call and supplementary services
     –   New multi-media services (MMTel, Video etc.)
                                                                                                                        SCC AS
► Allows legacy UE access                                                                                                       ISC
     –   Best effort service delivery – up to the UE                                              SGSN/
         capability                                                                                GGSN
                                                                                                             Gm/I1

     –   Access adaptation – allows non-IMS UE to gain                                                  Sv
         access to IMS network                                                                                           CSCF
                                                                                                              I2
                                                                                                                                ISC
► Fixed and Mobile Convergence
                                                                                                 MSS/MGW
                                                                                                               I3
     –   Agnostic to access network
     –   Guaranties fixed and mobile unified services                                                                    TAS
                                                          Terminais (UE)
► Roaming support
                                                          ICS (Interface I1 & Gm support)
     –   Industry standard
                                                          Non ICS
► Service continuity
     –   Can be supported in different network and
                                                                     MSC Server
         operaors
                                                                     Must support I2 and I3 interface functioonalities
► Needed for SR-VCC
                                                                        Diretoria de Engenharia e Operações – Planejamento Técnico
IMS Centralized Services
   Delivered Services         Access Network                    Transport &              IMS            Application &
                                                               IP Backbone                                Services
                             Metro Ethernet


 VoIP
 Complete MMTEL                                                Metro
                                                                               PCRF                             AS
 Boadband                    FTTx                             Ethernet
 QoS
                                                                                                     HLR/
 IP Enriched services                                 OLT                                          HSS/AAA
 IPTV over IMS
 Real Time Services                           ONT                                       x-CSCF
 PTSN Simulation
                             Par de Fios
                                                                                                               TAS



                                              MSAN BRAS
                                                                                         MGCF
                             Rede 2G                                                     MGW
 Voice over CS
 Partial MMTEL                                                                                                 SCC
 Low data rate
 IP Services                                         BSC
                                        BTS
                                                                                         BGCF
                             Rede 3G
 Voice over CS (UMTS only)
                                                                                                              MMTEL
 VoIP
 Complete MMTEL                                      RNC
                                     NodeB
 Boadband                                                       Core
 QoS                                                                                     MRFC
 IP Enriched services
                                                               Mobile                    MRFP
                             LTE/EPC
 IPTV over IMS                                                Network
 Real Time Services
 PTSN Simulation                                                               IBCF                          IM SSF
                                                                               IBGF
                                       ENodeB       MME/PGW


                                                                         Diretoria de Engenharia e Operações – Planejamento Técnico
MMTEL (Multimedia Telephony Services)

► MMTel is a global standard, specified in 3GPPTS 22.173
  (Stage 1) and 24.173 (Stage 3) for real time multimedia
  communications.

► Establishes IMS service requirements for legacy CS domain
  services and ETSI TISPAN.

► Provides, beyond CS Domain simulated basic and
  supplementary services, the following Internet services:
   – Chat: text message delivery
   – Speech conversation
   – Video communications
   – File (pictures, video clips, data files etc.) transfer
   – Point to point and point to multi-point
       communications
   – Dynamic session add-on and removal
   – Presence-enabled address book
   – Terminal capability adaptation
   – Location services
► As standard, allows roaming between operators.




                                                              Diretoria de Engenharia e Operações – Planejamento Técnico
RCS (Rich Communication Suite)
► Project created by GSMA that represents a join industry effortin order to accelerate and fatcilitate
  the service and application adoption, allowing interoperability, convergence, enriched multimedia
  communication, advanced presence services based on IMS;




                                              Enriched Call                     Enhanced
                                               Voice calls with                 Messaging
                                              multimedia content              Conversational
                                                    sharing                 message experience



                                                                 Enhanced
                                                                Phonebook
                                                                   Agenda
                                                              Advanced presence
                                                                functionalities




                                                                   Diretoria de Engenharia e Operações – Planejamento Técnico
The overall IMS framework is still evolving

                               2008-                 2008               2009                   2010                   2011
                               EDGE               E-EDGE

                          DL:237 kbps          DL:1,89 Mbps
                          UL:59 kbps           UL: 947 kbps
 Access Network




                           Rel 7 HSPA+          Rel 8 HSPA+        Rel 9 HSPA+           Rel 10 HSPA+
                          DL: 28 Mbps          DL: 42 Mbps        DL: 84 Mbps            DL: 168 Mbps
                          UL: 11,5 Mbps        UL: 11,5 Mbps      UL: 23 Mbps            UL: 23 Mbps
                          BW: 5 MHz            BW: 5 MHz          BW: 10 MHz             BW: 20/10 MHz


                                                  Rel 8 LTE          Rel 9 LTE                                     Rel 10 LTE
                                               DL: 326 Mbps
                                                                  Self Organized                                 DL:> 1 Gbps
                                               UL: 86 Mbps
                                                                  Network                                        BW: 100 MHz
                                                    20 MHz
                                                                                                                 LTE Advanced
   Core Network and IMS




                             Rel 5 IMS               EPC              VoLGA              OneVoice IMS
                                               Evolved Pack       First
                          Firs specification                                             Operator
                                               Core & Common      specification in
                          in 2002                                                        iniitiative
                                               IMS - Release 8    2009


                          Rel 7 MMTEL          CS Fall Back       ICS & SRVCC            VoLTE GSMA
                          First                                                          GSMA initiative
                                               First              First
                          specification in                                               announced in
                                               specification in   specification SR-
                          2002                                                           february 2010.
                                               Rel.8              VCC Rel.8




                                                                                      Diretoria de Engenharia e Operações – Planejamento Técnico
Conclusions
► Although MBB is consolidating and in will be the preferable Internet access, voice services
  still represents the most important part of revenue.

► LTE provides high throughput with low latency that is excellent for data services, but it
  represents 10 times more spectrum efficiency than GSM for voice transport.

► The operators are still intensively investing in network infrastructure and new band licenses
  in order to follow continuous market anxiety for more throughput. That enables other
  competitors beyond operator control from new Web Service industry.

► IMS is the most impressive and complete framework that allows operator to offer
  differentiated services, controlled by network, guarantying customer service experience and
  investment value protection.

► Besides, IMS will enable the VoIP over LTE technology, taking advantage of high spectrum
  efficiency, guarantying the user level experience and operator business premises.

► IMS does not only enable the multimedia services (such as VoLTE, MMTEL and ICS), but it is
  one of the most powerful tool for capturing opportunities and any service lifecycle stage
  (PCC): Rating and charging services for developing compelling and competitive revenue
  models.

► Interconnection and roaming technical and business model are pragmatic open issues that
  must be solved in next years.


                                                         Diretoria de Engenharia e Operações – Planejamento Técnico
Obrigado!
Gracias!
 Thanks!
Alberto Boaventura
  alberto@oi.net.br
  0 31 21 8875 4998

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Lte Latin America 2011 Ims Assuming An Important Role On Lte V1.0

  • 1. IMS Assuming an Important Role on LTE Alberto Boaventura alberto@oi.net.br 0 31 21 8875 4998
  • 2. Mobile Broadband Industry Consolidation 2500 MM Mobile Internet Accesses surpass Desktop Internet Global Internet is still 2000 MM Accesses growing : 1.8B Users, +13% Y/Y 18.8T 1500 MM Minutes Spent, +21% Y/Y 1000 MM But, mobile will be 500 MM preferable access in 4 Years 0 MM 2007E 2008E 2009E 2010E 2011E 2012E 2013E 2014E 2015E Mobile Desktop Source: Morgan Stanley 2010 Revenue forecast per application type 2008-2015 Source: Ericsson 2010 The MBB is rapidly consolidating, and in couple years will be the preferable Internet access. Despite of that, voice services still represents the most important part of revenue, but it is being replaced by the new communication types … Diretoria de Engenharia e Operações – Planejamento Técnico
  • 3. Mainframe-> Mini-> Desktop -> Smartphones/Tablets 5 convergence trends: MBB + Social Networking + Video + VoIP + usability in differentiated devices Mobile Internet Internet Desktop Mini 10 B+ Mainframe 1 B+ 100 MM+ 1 MM+ 10 MM+ 1960 1970 1980 1990 2020+ Source: Morgan Stanley 2010 The expressive Mobile Internet growth projection is justified by integration of functionalities (for personal use) in a single device, and becoming in next years the preferential Internet device against desktops. Diretoria de Engenharia e Operações – Planejamento Técnico
  • 4. Market is eager for more thoughput Rel 9 HSPA+ Rel 10 LTE TV 3D DL: 84 Mbps DL:> 1 Gbps HDTV UL: 23 Mbps BW: 100 MHz BW: 10 MHz LTE Advanced Rubust On-Demand Augmented Rel 8 HSPA+ Rel 8 LTE Gaming Reality DL: 42 Mbps DL: 326 Mbps UL: 11,5 Mbps UL: 86 Mbps Video P2P BW: 5 MHz 20 MHz Conference Virtualization Visual Mbps+ Networking Rel 7 HSPA+ Mobile TV Internet DL: 28 Mbps Collaboration M2M UL: 11,5 Mbps BW: 5 MHz Music Games Mbps Social Rel 6 HSPA MMS Networks DL: 14 Mbps Email Mobile Web UL: 11,5 Mbps BW: 5 MHz EDGE Telemetry LBS/GPS kbps DL:237 kbps UL:59 kbps EMS IM GPRS SMS DL:80 kbps UL:20 kbps The operators are still intensively investing in network infrastructure and new band licenses in order to follow continuous market anxiety for more throughput. de Engenharia e Operações – Planejamento Técnico Diretoria
  • 5. Web Based Services Web Services: • Lower Costs • Minimum Risk • Advertisement and Lower Tariff Business Model • Most important Telco threat Opeator Network: • OPEX Operator Transport Network • CAPEX • License Obligations SGSN/MME MSAN/AGW ONT Operator Customers: ONU modem • Contract Obligations • License Obligations • Customer Prospect Cost HSPA/LTE Wi-Fi FTTx xDSL • Price Competition But higher throughput enables services in the new web industry (over the top), impacting severely the traditional operator business models. Diretoria de Engenharia e Operações – Planejamento Técnico
  • 6. Traffic and Revenue decoupling Rapid and consistent mobile broadband consolidation, air interface technology advances, machine type communication and new smart devices will bring a tsunami of IP data traffic. In the same time, high competition with lack technology barrier force a rapid service lifecycle and new services becomes mature quickly, with low profitability. Traffic Revenue Voice Dominant Data Dominant New challenge: how to be profitable in data era? Diretoria de Engenharia e Operações – Planejamento Técnico
  • 7. IP Multimedia Subsystem Control New Service Creation User Data Self Provisioning Service Portal Transport Service Only!!! Billing IMS QoS Session Control Service Access Control Transpor t Network Transpor t Network Privacy and Security Multimedia Access Access Network Network Internet Access ONU ONU Transport Network HSPA/LTE FTTx HSPA/LTE FTTx Access Network IMS is the most impressive and complete framework that allows operator to offer differentiated services, controlled by network, guarantying customer service experience and investment value protection Diretoria de Engenharia e Operações – Planejamento Técnico
  • 8. What is IMS role in LTE? GSM/GPRS/EDGE Call Session Control, or core of IMS, MSS GMSS Um BTS (SR-VCC) Policy & Charging Control, introduced at responsible for establishing, billing, event BSC (MGCF) coordination, media and resources beginning of IMS architecture, responsible PLMN/ controlling and service development in to manage properly the network resources PSTN/SS7 order to fulfill the serviceAand application A-Bis based on service level requirements. requirements. C/D C/D PCC gives to user applications the Mc IuCS In LTE, the IMS will replace the existing required and fair network resources based MGW switch offices in CS Domain. Gs/Gd/ HSS on service business requirements. Sv/SGs UMTS/HSPA/HSPA+ Gb GGSN Uu Gr Gc (P-GTW) Gn Internet Iub IuPS GTP-U Gi NodeB RNC SGSN (MME/SGW) Mg Cx Gm Gx LTE/EPS Mw Rx Uu There is no CS domain inPCRF The CS S-CSCF P-CSCF LTE. services, such as TDM calls and SMS, will Mw Gy S1 be replaced (or migrated to) by services ISC ENodeB under IP network environment. Ro AS I-CSCF OCS IMS IMS will not only enable the multimedia services, but this is one of the most powerful tool for capturing opportunities and any service lifecycle stage: Rating and charging services for developing compelling and competitive revenue models. Diretoria de Engenharia e Operações – Planejamento Técnico
  • 9. Is LTE proper to transport voice services? 200kHz GSM/GPRS/EDGE 0 1 2 3 4 5 6 7 Um BTS MSS/MGW BSC PLMN/ Logical and physical channels are PSTN/SS7 structured in 8 TS, named TRX. The TRX A-Bis A capacity is 2,5 Erl @ 1% GoS C Services based on deterministic TDM network. HLR The spectral efficiency is 9 users per MHz UMTS/HSPA/HSPA+ Uu NodeB MSS/MGW RNC 3,84MHz PLMN/ Each 5MHz (3,84 MHz) carrier is able to PSTN/SS7 transport 125 voice channel. But the RF Iub Iu-CS C limitation this number is around 60 channels, that corresponds 47Erl @ 1% GoS HLR The spectral efficiency is 20 users per MHz 180 kHz LTE/EPS Uu Freq. MME/S/PGW TTI/2 PLMN/ IMS T. PSTN/SS7 S1 S1 Sgi/ There is no dedicated resources (channels) ENodeB Gm Cx/Sp for voice transport in LTE. The voice services are based on VoIP, and the capacity S6a is function of statistical multiplexing HSS premises. The spectral efficiency is 80 user per MHz Diretoria de Engenharia e Operações – Planejamento Técnico
  • 10. Path to Support Voice and Legacy Services Voice over CSFB VoLTE CS Domain VoLGA Diretoria de Engenharia e Operações – Planejamento Técnico
  • 11. What is Circuit Switch Fall Back (CSFB)? LTE Uu PLMN/ SGs PSTN/SS7 S1 SGs ENodeB MME/SGW/PGW MSC C HLR/HSS/AAA GSM/UMTS A/Iu-CS Um/Uu Abis/Iub BTS/NodeB BSC/RNC ► Defined in 3GPP TS 23.272, represents a short term solution for voice and legacy services supporting in LTE network. ► Consists to redirect from LTE network any service based on CS domain (voice or SMS) to 2G/3G network ► Requires SGs interface activation for terminating services. Diretoria de Engenharia e Operações – Planejamento Técnico
  • 12. What is VoLTE? SCC AS LTE TAS Uu PLMN/ IMS PSTN/SS7 S1 Gm/Rx/SGi PSTN ENodeB MME/SGW/PGW Cx/Sp I2/I3 HLR/HSS Sv/SGs AAA/SPR GSM/UMTS Um/Uu C PSTN Abis/Iub A/Iu-CS BTS/NodeB BSC/RNC MSC SR-VCC ► VoLTE is a GSMA and 3GPP conjunction initiative, supported in 3GPP IMS recommendation framework, which architecture is defined IR.92 based on 3GPP TS 23.002 and TS 23.228. ► 3GPP vision for voice service support in LTE ► Needs Applications Servers for Service Centralization and Continuity (SCC), Telephony ► The service continuity and handover are guaranteed by SR-VCC (Single Radio Voice Call Continuity), defined in 3GPP TS 23.216, using a special interface between MME and MSS, Sv, for call achoring. Diretoria de Engenharia e Operações – Planejamento Técnico
  • 13. What is VoLGA (Voice over LTE via Generic Access)? LTE Uu PLMN/ PSTN/SS7 S1 SGi/Sv A/Iu-CS ENodeB MME/SGW/PGW VANC MSC D’ C HLR/HSS/AAA GSM/UMTS A/Iu-CS Um/Uu Abis/Iub BTS/NodeB BSC/RNC ► Based on Generic Access Network interface defined in 3GPP TS 43.318 and 23.879 for CS services over PS domain. ► Not totally standardized, and there is no formal references in 3GPP, however there is specific forum, with set of operators and suppliers participation: VoLGA Forum. ► Needs a specific network element: VANC (VoLGA Access Network Controller). ► Supports handover, but it needs huge integration job Diretoria de Engenharia e Operações – Planejamento Técnico
  • 14. Strengths & Weaknesses CSFB VoLTE VoLGA No IMS investment Voice and data services can be No IMS investment delivered in the same network 3GPP standard, and widely Strengths supported in several vendors -> No need CS domain. no roaming problems Data sessions can be Requires IMS introduction or Not standardized by 3GPP interromped during the voice expansion calls. Only a single operator announced In the first moment will not be support ubiquitous and there will be Weaknesses Long call establishment time (at roaming problems. Needs terminal support. least 3 seconds more); Solves the problem for CS domain Não utiliza os benefícios da alta (legacy services) eficiência espectral do LTE; Diretoria de Engenharia e Operações – Planejamento Técnico
  • 15. Concerns for VoLTE ► Interconnection (ITX) – It is imperative to standardize a technical model to be followed by operators for network integration and interconnection: • User and control plan protocols • Visited and home network models • QoS • Service transparency – GSMA is working in a set of recommendations that are being synthesized in IR.34 and IR.88. – And in Brasil? And in Latin America? ► Roaming – It is important to create business models in order to be consistent with financial and revenue sharing premises; – GSMA created an interconnection model called IPX (IP eXchange), GRX successor, for IP, VoIP and IMS interconnection services; – And in Brasil? And in Latin America? Diretoria de Engenharia e Operações – Planejamento Técnico
  • 16. But IMS is not VoLTE only 3GPP ICS (IMS Centralized Services) 3GPP MMTEL (Multimedia Telephony Services) GSMA RCS (Rich Communication Suite) Diretoria de Engenharia e Operações – Planejamento Técnico
  • 17. IMS Centralized Services SCC AS (Service Centralization & Continuity) AS ► Specified in 3GPP TS 23.292, provides all service ICS User Agent redefinitions, including over CS domain, for CS Access Adaptation developing based on IMS. Service control funcionalities (I1): Registration, Call Control,Service Continuity ► All network services are provided via IMS – Existing basic call and supplementary services – New multi-media services (MMTel, Video etc.) SCC AS ► Allows legacy UE access ISC – Best effort service delivery – up to the UE SGSN/ capability GGSN Gm/I1 – Access adaptation – allows non-IMS UE to gain Sv access to IMS network CSCF I2 ISC ► Fixed and Mobile Convergence MSS/MGW I3 – Agnostic to access network – Guaranties fixed and mobile unified services TAS Terminais (UE) ► Roaming support ICS (Interface I1 & Gm support) – Industry standard Non ICS ► Service continuity – Can be supported in different network and MSC Server operaors Must support I2 and I3 interface functioonalities ► Needed for SR-VCC Diretoria de Engenharia e Operações – Planejamento Técnico
  • 18. IMS Centralized Services Delivered Services Access Network Transport & IMS Application & IP Backbone Services Metro Ethernet VoIP Complete MMTEL Metro PCRF AS Boadband FTTx Ethernet QoS HLR/ IP Enriched services OLT HSS/AAA IPTV over IMS Real Time Services ONT x-CSCF PTSN Simulation Par de Fios TAS MSAN BRAS MGCF Rede 2G MGW Voice over CS Partial MMTEL SCC Low data rate IP Services BSC BTS BGCF Rede 3G Voice over CS (UMTS only) MMTEL VoIP Complete MMTEL RNC NodeB Boadband Core QoS MRFC IP Enriched services Mobile MRFP LTE/EPC IPTV over IMS Network Real Time Services PTSN Simulation IBCF IM SSF IBGF ENodeB MME/PGW Diretoria de Engenharia e Operações – Planejamento Técnico
  • 19. MMTEL (Multimedia Telephony Services) ► MMTel is a global standard, specified in 3GPPTS 22.173 (Stage 1) and 24.173 (Stage 3) for real time multimedia communications. ► Establishes IMS service requirements for legacy CS domain services and ETSI TISPAN. ► Provides, beyond CS Domain simulated basic and supplementary services, the following Internet services: – Chat: text message delivery – Speech conversation – Video communications – File (pictures, video clips, data files etc.) transfer – Point to point and point to multi-point communications – Dynamic session add-on and removal – Presence-enabled address book – Terminal capability adaptation – Location services ► As standard, allows roaming between operators. Diretoria de Engenharia e Operações – Planejamento Técnico
  • 20. RCS (Rich Communication Suite) ► Project created by GSMA that represents a join industry effortin order to accelerate and fatcilitate the service and application adoption, allowing interoperability, convergence, enriched multimedia communication, advanced presence services based on IMS; Enriched Call Enhanced Voice calls with Messaging multimedia content Conversational sharing message experience Enhanced Phonebook Agenda Advanced presence functionalities Diretoria de Engenharia e Operações – Planejamento Técnico
  • 21. The overall IMS framework is still evolving 2008- 2008 2009 2010 2011 EDGE E-EDGE DL:237 kbps DL:1,89 Mbps UL:59 kbps UL: 947 kbps Access Network Rel 7 HSPA+ Rel 8 HSPA+ Rel 9 HSPA+ Rel 10 HSPA+ DL: 28 Mbps DL: 42 Mbps DL: 84 Mbps DL: 168 Mbps UL: 11,5 Mbps UL: 11,5 Mbps UL: 23 Mbps UL: 23 Mbps BW: 5 MHz BW: 5 MHz BW: 10 MHz BW: 20/10 MHz Rel 8 LTE Rel 9 LTE Rel 10 LTE DL: 326 Mbps Self Organized DL:> 1 Gbps UL: 86 Mbps Network BW: 100 MHz 20 MHz LTE Advanced Core Network and IMS Rel 5 IMS EPC VoLGA OneVoice IMS Evolved Pack First Firs specification Operator Core & Common specification in in 2002 iniitiative IMS - Release 8 2009 Rel 7 MMTEL CS Fall Back ICS & SRVCC VoLTE GSMA First GSMA initiative First First specification in announced in specification in specification SR- 2002 february 2010. Rel.8 VCC Rel.8 Diretoria de Engenharia e Operações – Planejamento Técnico
  • 22. Conclusions ► Although MBB is consolidating and in will be the preferable Internet access, voice services still represents the most important part of revenue. ► LTE provides high throughput with low latency that is excellent for data services, but it represents 10 times more spectrum efficiency than GSM for voice transport. ► The operators are still intensively investing in network infrastructure and new band licenses in order to follow continuous market anxiety for more throughput. That enables other competitors beyond operator control from new Web Service industry. ► IMS is the most impressive and complete framework that allows operator to offer differentiated services, controlled by network, guarantying customer service experience and investment value protection. ► Besides, IMS will enable the VoIP over LTE technology, taking advantage of high spectrum efficiency, guarantying the user level experience and operator business premises. ► IMS does not only enable the multimedia services (such as VoLTE, MMTEL and ICS), but it is one of the most powerful tool for capturing opportunities and any service lifecycle stage (PCC): Rating and charging services for developing compelling and competitive revenue models. ► Interconnection and roaming technical and business model are pragmatic open issues that must be solved in next years. Diretoria de Engenharia e Operações – Planejamento Técnico
  • 23. Obrigado! Gracias! Thanks! Alberto Boaventura alberto@oi.net.br 0 31 21 8875 4998