accelerating ims deployment
TRANSCRIPT
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
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Global Service Revenue
8
Growth in IMS Systems Revenue Globally
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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
13
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
