Accelerating IMS Deployment

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Accelerating IMS Deployment
Gibson Ang Sr. Product Manager
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Carrier Goal Single Common Core
Femtocell
Location
Fixed-Line BAN
Web/Gaming
WLAN
Roaming Subscriber
IP/ Pre-IMS/ IMS/NGN Core
UMA
Video/IPTV
Yo George Sox win again! )
Data/IM
UMTS RAN
3GPP2 RAN
VoIP/PTT
OPERATOR CORE
SUBSCRIBER
SERVICES
ACCESS NETWORKS
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Business Goals

• Remove Silos
• Accelerate Service Rollout
• Increase Subscriber Revenue
• Increased ARPU
• Increased Stickiness
• Beat Competition

Subscriber Generated Growth While Reducing Costs
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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
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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
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IMS Architecture Service Delivery Architecture
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IMS Market Maturity, Demand Drivers and Risk
Factors
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Global Service Revenue
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Growth in IMS Systems Revenue Globally
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IMS Services Goals
Guaranteed Seamless Multi-Service Delivery To
Mobile and Fixed-Line Subscribers

• Integrate different access networks into common
  evolving IP, Pre-IMS, IMS, or NGN core network
• Allow authenticated subscribers access to
  authorized services from any location/network
• Deliver End-to-End Per-Flow QoS
• Terminate Secure Tunnels Encrypt/Decrypt
• Fraud Prevention - Prevent Theft of Bandwidth and
  Services
• Provide DOS Protection to UE and the network
• Serve Lawful Intercept Control, Media, and Data
• NAT for Public lt-gt Private Addressing
• Seamless Mobile IP Roaming

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Operator Challenges to Implementing IMS

• Vendors/Product Availability
• Internal business processes
• Interoperability
• Interfaces from infrastructure to applications
• Integration with legacy networks
• Interconnect agreements

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Security

• SIP, RTSP, RTP, and HTTP

Application Layer
Attack Layers
Transport Layer

• TCP and UDP
• IP and ICMP

Network Layer

• Malformed packets
• Floods
• DoS attacks
• Hijacking

• Unauthorized access
• Theft of service
• Theft of bandwidth

Revenue Attacks
DoS Attacks

• Mutual Authentication
• IPSec or TLS Encrypted Signaling
• IPSec Encrypted Bearer Data

Secure Access
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3G Policy Infrastructure for E2E QoS
Policy Control
Policy Control
Policy Decision
S-PDF
Ia
Ia
C-BGF
A-BGF
Policy Enforcement
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Secure Entry for Untrusted 3rd-Party Applications
3rd-Party IMS Applications
Enterprise Applications
Operator IMS Applications
Web
SIP
Web
SIP
Sh
Multi-Service Gateway Stateful Firewall DOS
Protection Rate-Limiting Per-Flow QoS Aggregate
QoS NAT/NAPT Encrypted Signaling Mirroring CDRs/SD
Rs SIP Overload
AAA- RADIUS
HSS
UE User Equipment P-CSCF Proxy Call and Session
Control Function I-CSCF Interrogating Call and
Session Control Function S-CSCF Serving Call and
Session Control Function HSS Home Subscriber
Server PDF Policy Decision Function Gm Interface
IPsec/SIP Gq Interface Diameter Mw interface
SIP
Multi- Service Gateway
Cx
Cx
ISC
S-CSCF
I-CSCF
Access Network
UE
SIP Signaling
Mw
Mw
P-CSCF
IPSec
Gm
Bearer Plane
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Conclusions

• 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

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Questions Comments

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