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    There is one video in out ppt so

    I am not attaching it( Its bulkyso) .

    This will be the sequence.

    Find you slides.Slide number 48 ( before

    thank you slide)

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    IP Multimedia Subsystem

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    WHAT IS IMS

    It is a complete architecture and framework

    that enables the convergence of voice data,

    video and mobile n/w technology over an IP

    based infrastructure.

    It will fill up the gap between two most

    successful communication paradigm cellular

    and internet technology.

    The vision of IMS is to provide cellular access to

    all the service that the internet provides.

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    HISTORY OF IMS

    It was first introduced in 3GPP release5.

    SIP was the main protocol during thetime .

    Release 6 &7 of the 3GPP to include

    additional feature like

    o Presence service.

    o Group management.

    o Interworking with WLAN.

    o Fixed broadband access.

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    HISTORY OF IMS(Contd.)

    After coming to 3GPP2 the IMS was

    largley adopts from 3GPP release 5.

    OMA(open mobile alliances) plays an

    important role on specifying and

    developing IMS service

    standardization.

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    WHY DO WE NEED OF IMS

    IMS provides a common platform to reduce

    time-to market for rolling out new multimedia

    service.

    IMS provides multimedia service with quality of

    service(QoS) enablement.

    It allows operator to charge multimedia session

    appropriately.

    IMS allows all service to be available

    irrespective of user location.

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    3 G P P R e le a se C o n ce p t

    2 0 1 12 0 1 02 0 0 92 0 0 82 0 0 72 0 0 62 0 0 52 0 0 42 0 0 32 0 0 22 0 0 12 0 0 0

    R99 R4 R5 R6 R7 R8 R9 R10

    HighSpeed

    Accesses

    IPCore

    Network

    Service

    s

    UM TS HS PA DL HS PA UL LT

    E LT

    E Ad

    vH

    S

    P

    A

    +

    EP C

    Co

    mm

    IM SI

    M SMM

    Te l

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    3GPP Release 5

    IMS was first developed as part of Rel 5 in 2002. It is based on IETF

    protocols such as SIP and SDP that are very mature. These

    technologies have been embraced by the industry as the

    signalling mechanism for multimedia applications.

    Release 5 (frozen 2002): SA3 added 3 new specifications, e.g.:

    TS 33.203 IMS security

    TS 33.210 Network domain security: IP layer

    3GPP R5 & R7 added MIMO antenna and 16QAM (Uplink)/

    64QAM (Downlink) modulation

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    MS home

    MSvisited

    S domainR99 access security

    authentication&key agreement security mechanism

    agreement

    integrity

    protection

    network domain security

    ( ) ( - )IMS SIP security Rel 5

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    UMTS System: 3GPP R4

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    UMTS : 3GPP R5

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    W LA N in te rw orkin g in 3 G P P

    WLAN access zone can be connected to cellular core

    network

    & &Shared subscriber database charging authentication( ) WLAN Direct IP access

    ( )Shared services WLAN 3GPP IP Access

    Service continuity is the next step

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    WLAN Interworking inRelease 6-7

    Scenario 1 - Common Billing and Customer

    Care

    Single customer relationship Customer receives one bill from the mobile

    operator for the usage of both 3GPP and

    WLAN services

    Does not pose any new requirements on

    3GPP specifications

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    WLAN Interworking inRelease 6-7

    Scenario 2 - 3GPP system based Access

    Control and Charging

    Authentication, authorization and

    accounting are provided by the 3GPP

    system

    The security level of these functions applied

    to WLAN is in line with that of the 3GPPsystem

    User does not see significant difference in

    the way access is granted

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    Scenario 3: Access to 3GPP system PS based

    services

    Extends 3GPP system PS based services to the

    WLAN, e.g. IMS based services, location based

    services, instant messaging, presence based

    services

    Scenario 4: Service Continuity Allows the services supported in Scenario 3 to

    survive a change of access between WLAN and

    3GPP systems

    Change of access may be noticeable to the user,

    WLAN Interworking inRelease 6-7

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    WLAN Interworking inRelease 6-7

    Scenario 5: Seamless services

    Provide seamless service continuity between the

    access technologies, for the services

    supported in Scenario 3

    Means minimizing aspects such as data loss and

    break time during the switch between access

    technologies

    Scenario 6: Access to 3GPP CS Services

    Allows access to services provided by the

    entities of the 3GPP Circuit Switched Core

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    IMS Architecture

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    Architecture

    S SS

    Session ControlHSS

    CentralizedDatabases

    Media Control& Gateways

    PSTNG 3GMobileirelessBroadbandWirelineBroadband. /esEnterprize

    Services plane( )Application Layer

    Session Control Plane( )Session and DB Layer

    Media Control Plane(Media Control& )Gateway Layer

    Network Plane( )Access and Transport

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    Architecture

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    IMS Layers

    Transport Layer

    Control layer

    Device Layer , , ,IMS devices such as computers mobile phones PDAs and digital phones are able to connect to the I

    .Converge the traditional PSTN network to IP network

    ( ),rol Function CSCF which handle SIP registration of the end points and process SIP signal messaging o

    Service PlaneApplication layer

    , , ,e desired application server such as telephony messaging multimedia etc also provide the interface

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    Core network

    Home subscriber server:-

    IP Multimedia Private Identity

    IP Multimedia Public Identity

    Globally Routable User Agent URI

    Wildcarded Public User Identity

    Call/session control

    A Proxy-CSCF(P-CSCF)

    A Serving-CSCF(S-CSCF

    An Interrogating-CSCF(I-CSCF

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    Contd.

    Application servers

    SIP AS

    IP Multimedia Service Switching Function (IM-SSF

    OSA Service Capability Server (OSA SCS)

    Functional model

    Public Service Identity

    Media Servers(MRF) MRFC

    MRFP

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    Contd.

    Breakout Gateway

    PSTN Gateways

    Signalling Gateway (SGW)

    Media Gateway Controller Function (MGCF)

    Media Gateway(MGW)

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    NGN Interconnection

    There are two types ofNext Generation Networking

    Interconnection:-

    Service oriented Interconnection (SoIx)

    Connectivity oriented Interconnection (CoIx)

    Charging

    Offline Charging

    Online Charging

    http://en.wikipedia.org/wiki/Next_Generation_Networkinghttp://en.wikipedia.org/wiki/Next_Generation_Networking
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    Fixed Mobile Convergence(FMC)

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    IMS Technology Evolution

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    IMS Access NetworkIndependence

    RNC( )MSC Server

    SGSN

    GGSN

    CNCN

    MGW

    BSC

    /UMTS GPRS/UMTS GPRS

    WLANWLAN

    CorporateCorporate

    -P CSCF

    -I CSCF

    MRF

    MGW

    MGCF

    IMSIMS

    -S CSCF

    SIP ApplicationServersSIP Application

    Servers

    HSS

    CDMA 2000CDMA 2000/DSL Cable Modem/DSL Cable Modem

    /DSLAM CMTS

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    IMS Converged Communications Services Vision

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    IMS Common Platform

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    Different Service, SingleMedium

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    Traditional View

    SS7

    MSC

    SCPHLR

    Carrier A/GSM ANSI Network

    MSC

    HLR

    Carrier B/GSM ANSI Network

    SCP

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    IMS View

    UE1

    SIP

    IMS NetworkCarrier A

    IMS NetworkCarrier B

    ASsHSS

    HSS

    ASs

    CSCFs CSCFs

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    Billing in IMS

    Packet/Switch n w

    CSCF

    SIP

    HSS

    S S SIP

    M

    CCF

    SCF

    CircuitSwitch

    /n w

    Balance mgmt

    Replenishment

    Pr

    od

    uc

    t

    Ca

    ta

    lo

    g

    CONVERGENT CHARGING

    Online Charging

    Offline Charging

    Mediation

    Diameter

    IMS ApplicationServer

    IMSSessionControl

    IMS interworkingGateways

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    Relationship between useridentities

    Benefits of IMS

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    Benefits of IMS

    hared Resources edia server resources ommon user data ingle user profile across applications ntegrated applications

    hared Resources edia server resources ommon user data in gle u ser p rof il e a cr os s a pp lic at ion s ntegrated applications

    ession Control ( )ommon Session Control SIP rovides common service policies everages investments across multiple applications

    ession Control ( )ommon Session Control SIP rovides common service policies everages investments across multiple applications

    ccess Network Agnostic liminates multiple service solutions etwork transparency onsistent services across networks

    ccess Network Agnostic liminates multiple service solutions etwork transparency onsistent services across networks

    onverged Applications cross Networks ed uc ed de vel op ment c ost s and t ime ,oice Video and data services /rite once use many

    onverged Applications cross Networks ed uce d d ev el opm en t c os ts an d t im e ,oice Video and data services /rite once use many

    Transport

    Control

    Applications

    DSL Mobile PSTN

    Voice

    Video

    Hosted

    Services eb ContentData

    SIP

    Access

    CMTS

    Business drivers for IMS

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    Business drivers for IMS

    - /Customer Lock in Churn reduction Improve margin Improve TTM

    ( )Time To Market

    s stay with an operator e.gn/w data storage network initiated actions, community products etc.

    qOne stop shop approach

    qLower Opex & Capex.

    qAll-encompassing tariff structure for fixed and mobile.

    qUnifying platforms across networksqqq

    qEnable services to have a shortIntroduction phase to overall PLC (Product

    qRevenue Sharing with content provi

    IMS Services

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    q PUSH-TO-TALK over mobile phone.q Interactive Gamingq Shared foldersq Instant Messaging servicesq Voice Messagingq Voice and Video Telephony

    q Video-conferencing.q Real Time Video Sharing.

    IMS Services

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    M S V e n d o r s

    IMS Deployment

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    IMS Deployment

    Wireless Operator Infrastructure Vendor Service Planned

    BT (UK) Undisclosed BT Fusion fixed/mobile

    converged phone service

    eAccess (Japan) Lucent Multimedia, HSDPA

    France Telecom Siemens Fixedmobile convergence

    MM02 (UK) Siemens Push-to-talk over cellular (POC), multimedia

    conferencingSaunalahti (Finland) Nokia VoIP and rich multimedia to

    both mobile and fixedtelephony customers

    Telecom Italia Mobile Ericsson and Nokia Video sharing

    Telefonica (Spain) Ericsson Converged wireless/wireline

    IMS deployment

    Telia Sonera(Nordic region)

    Ericsson, Nokia, and Siemens Instant messaging, videosharing, gaming amongdifferent mobile operators

    TMN (Portugal) Nokia Video sharing

    IMS Equipment Revenue

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    IMS Equipment Revenue

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    44

    l o b a l S e r v i c e R e v e n u e

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    45

    t h i n I M S S y s t e m s R e v e n u e G l o b a

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    1.Vendors/ProductAvailability

    2.Internal businessprocesses

    3.Interoperability

    4.Interfaces frominfrastructure toapplications

    5.Integration with legacy

    o r C h a l l e n g e s i n I m p l e m e n t i n

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    , , ,SIP RTSP RTP and

    HTTP

    pplication Layerransport Layer

    etwork Layer

    Malformed packetsFloods DoS attacksHijacking

    Attack

    Layers

    DoS

    Attacks

    Unauthorized access Theft of service Theft of bandwidth

    Revenue

    Attacks

    Mutual Authentication IPSec or TLS Encrypted Signaling IPSec Encrypted Bearer Data

    SecureAccess

    TCP and UDP IP and ICMP

    S e c u r i t y

    t M a t u r i t y D e m a n d D r i v e r s a n d R i s k

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    48

    ,

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    Thank You