accelerating ims deployment

Accelerating IMS Deployment

Gibson AngSr. Product Manager

Carrier Goal = Single Common Core

Yo GeorgeSox win again! :)

VoIP/PTT

Data/IM

Video/IPTV

Web/Gaming

SUBSCRIBER ACCESS NETWORKS

OPERATOR CORE SERVICES

IP/Pre-IMS/IMS/NGN

Core

Femtocell

WLAN

UMA

UMTS RAN

3GPP2 RAN

Fixed-Line BAN

Location

Ro

amin

g S

ub

scri

ber

Service AgnosticService Agnostic

Access AgnosticAccess Agnostic

Location AgnosticLocation Agnostic

2

Business Goals

3

• Remove Silos• Accelerate Service Rollout• Increase Subscriber Revenue

– Increased ARPU– Increased Stickiness

• Beat Competition

Subscriber Generated Growth While Reducing Costs

Architectural Goals

• FMC– Mobility - Seamless Roaming– Single Access-Agnostic

Backbone– Single Location-Agnostic

Backbone

• Services– Single Service-Agnostic

Backbone– Multi-Service– Service Blending

• IP Enhancements– Security– End-to-End QOS– Charging/Billing

Value Services = More than a Bit-Pipe Carrier

4

Enhanced Customer Experience

• Personalization– Location-Aware, Time-Aware, Availability-Aware– User-Controlled Policies and Account Profiles

• Unification– Terminals– Applications

• Socialization– VoIP Blended Services (Presence, IM)– Ad-Hoc Social Networking

• Automation– Contextual Text Messaging– Contextual Advertising

Customer Experience

The number of worldwide mobile connections is expected to grow 50% from 2.7 billion in

2006 to 4 billion in 2010. Wireless Intelligence

5

IMS Architecture – Service Delivery Architecture

6

IMS Market Maturity, Demand Drivers and Risk Factors

7

Global Service Revenue

8

Growth in IMS Systems Revenue Globally

9

IMS Services Goals

1) Integrate different access networks into common evolving IP, Pre-IMS, IMS, or NGN core network

2) Allow authenticated subscribers access to authorized services from any location/network

3) Deliver End-to-End Per-Flow QoS

4) Terminate Secure Tunnels + Encrypt/Decrypt

5) Fraud Prevention - Prevent Theft of Bandwidth and Services

6) Provide DOS Protection to UE and the network

7) Serve Lawful Intercept Control, Media, and Data

8) NAT for Public <-> Private Addressing

9) Seamless Mobile IP Roaming

Guaranteed Seamless Multi-Service DeliveryTo Mobile and Fixed-Line Subscribers

Operator Challenges to Implementing IMS

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1. Vendors/Product Availability

2. Internal business processes

3. Interoperability

4. Interfaces from infrastructure to applications

5. Integration with legacy networks

6. Interconnect agreements

Security

SIP, RTSP, RTP, and HTTP

Application Layer

Transport Layer

Network Layer

• Malformed packets

• Floods• DoS attacks• Hijacking

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

Secure

Access

TCP and UDP

IP and ICMP

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IP Transport (Access and Core)

T - MGF

I - BGF

AS

UPSF

I/S - CSCF

SLF

Charging Functions

IWF

« Core IMS »

Mw

Mw/Mk/Mm

Mr

Mg Mj

Mi

Mp Mn Gm

Gq '

ISC Cx Dx

Dh Sh

Ic

Rf /Ro

Rf /Ro Ib

Iw

Gq ' P

ST

N/IS

DN

SGF MRFC MGCF

MRFP

Resource and Admission Control Subsystem

Network Attachment Subsystem

e2

Ie

Mw IBCF

Mk Mk

UE

Ut

BGCF

Mw P - CSCF

Oth

er IP N

etwo

rks

A-BGFA-BGF

IaIa

Policy ControlPolicy Control

Policy ControlPolicy Control

Policy Enforcement

Policy Enforcement

3G Policy Infrastructure for E2E QoS

IaIa

C-BGFC-BGF

Policy DecisionPolicy Decision

S-PDFS-PDF

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UE Access Network

Access Network

P-CSCFS-CSCFI-CSCF

Cx

Mw

Gm

Mw

Cx

HSS

IPSec

Bearer Plane

Operator IMS Applications

Sh

ISC

SIP Signaling

UE: User EquipmentP-CSCF: Proxy Call and Session Control FunctionI-CSCF: Interrogating Call and Session Control FunctionS-CSCF: Serving Call and Session Control FunctionHSS: Home Subscriber ServerPDF: Policy Decision FunctionGm Interface = IPsec/SIPGq Interface = DiameterMw interface = SIP

Multi-ServiceGateway

3rd-Party IMS Applications

Web SIP

Enterprise Applications

Web SIP

Multi-Service Gateway:Stateful FirewallDOS ProtectionRate-LimitingPer-Flow QoSAggregate QoSNAT/NAPTEncrypted SignalingMirroringCDRs/SDRsSIP Overload

AAA-RADIUS

Secure Entry for Untrusted 3rd-Party Applications

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Conclusions

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• IMS enables revenue generating services for Subscriber-Based Growth. “Carrier is more than Bit-Pipe Carrier”

• IMS reduces costs by removing silos and building common multi-access core

• IMS enhances network for multi-service delivery

Questions & Commentsgang@nextpointnetworks.com

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