scaling diameter for lte
DESCRIPTION
TRANSCRIPT
Drag picture to placeholder or click icon to add
01/06/12 Acme Packet | www.acmepacket.com 1
Scaling Diameter
Acme Packet
Scaling Diameter for LTE
• Introduction• What is Diameter and Why it is important• What it means for operators and vendors• Market projections• Diameter signaling controller requirements • Role of Centralized Routing Databases
Introductions
• Greg Collins, Exact Ventures
• Kevin Mitchell, Acme Packet
• Glenn Marschel, NetNumber
What is Diameter?
• Next generation signaling protocol, replacing SS7
• Exchange subscriber profile data between fundamental core network elements/systems: – IMS– EPC – Billing systems– Roaming exchanges
Why is Signaling & Diameter Important?
• Since LTE has a relatively flat architecture, the core network is more exposed to signaling, than with 3G, which has an RNC.
• Network outages and/or poor performance– Increases churn– Destroys brands
Diameter Signaling Controllers• New product category, encompassing DEA,
DRA, protocol translation, other functions.• More efficient, scalable, and reliable Diameter
networks• Many dimensions for growth:
– Subscribers– Voice and Data usage/sessions– Dynamic billing and policy applications– Roaming
Diameter Signaling Controllers• Multi-billion dollar market opportunity
– New product category– Major technology transition– Continued strong organic growth in signaling
• High degree of vendor activity– Very early days; Accelerating RFI/RFP activity– Much more entry and consolidation to come
Attachment/registration
Authentication & authorization
Mobility/tracking
Authentication & authorization
Diameter Underpins the Monetization of LTE
Data and voice sessions
QoS & charging
Roaming
AAA, charging & QoS
Oct. 2012 Acme Packet | www.acmepacket.com
Diameter signaling pain points
Oct. 2012 Acme Packet | www.acmepacket.com
Home service provider
Visited service provider
Interoperability
Overload & downtime
Network opacity
Network complexity
Outages are costly – to top line and to brand
Oct. 2012 Acme Packet | www.acmepacket.com
All Diameter interfaces & applications• Authentication
• Location/mobility
• QoS
• Charging
• LTE data and VoLTE roaming
Provides critical signaling controls• Security
• Traffic & congestion control
• Interoperability & mediation
• Routing & aggregation
• Reporting & analysis
• Fulfill key standards• RFC 3588 Diameter agent
• 3GPP Diameter Routing Agent (DRA)
• 3GPP Subscriber Location Function (SLF)
• GSMA Diameter Edge Agent (DEA)
Introducing Diameter Signaling Controllers
IPX/roaming
hub
Service provider
Visited service
provider
HSS, OCS, PCRF nodes
MME, PDN GW, GGSN, CSCF, AS
Oct. 2012 Acme Packet | www.acmepacket.com
DSCs enable successful transition to LTE & IMS
• Lowers total cost of ownership
• Accelerates time to market
• Mitigates risk
Where DSCs are needed:Core and Edge
• Voice roaming• Data roaming• Services
federationInterconnect
• Aggregation & routing
• OCS proxy• HSS/AAA proxy• PCRF proxy
Core
IPX
MNO MNO
Oct. 2012 Acme Packet | www.acmepacket.com
Service providerHSS, OCS,
PCRF nodes
MME, PDN GW, GGSN, CSCF, AS
Universal Diameter interface support
Signaling security
Overload and congestion controls
Programmable L3-L5 interworking
Dynamic and scalable Diameter routing
Multi-vendor, end-to-end service management & operations
Key requirements
Oct. 2012 Acme Packet | www.acmepacket.com
Simplifies provisioning – eliminates silos
Highly scalable: 100s-1000s of millions of entries
Support for dynamic, complex routing decisions
Integration with legacy routing databases
Extensible – SIP, multi-vendor, future applications
Acme Packet | www.acmepacket.com
Scaling DSCs with Centralized Routing Databases
DB query
SOAP/XML
Diameter
SIP
MobileFixed
RoutingDB
Registries
LCR LNP OSSDiameter
clients
Diameter servers
xCSCF
Wholesale/IPX
MNO
STP
PSTN
Oct. 2012
Role of CRDB in NGN
Centralized Routing and Database Services
Common Data – Multiple Applications• SIP Services, DIAMETER services, TDM services
– All need access to shared/common routing data
• Common Routing Data– Subscriber data – Portability-data– Code-range data– MVNO data (Virgin Mobile)– OTT data (GoogleVoice)– Carrier-ENUM data (IMS endpoints)– Routing policy data (Route-list for destinations)
• Internal routing• Trusted interconnect partner routing• Least cost interconnect routing
CONVERGED TDM & IMS NETWORK
Connection Management Services
Network Edge Services
CRDB
SBC
Local provisioning
Web, File, SOAP/XML
Referral query
ENUM, AIN, M
AP, INAP
Common Data – Multiple ApplicationsPortability Data
Code-Range DataSubscriber Assignment Data
Carrier-ENUMInterconnect Trunk-Group Profiles
MVNO destinationsOTT destinations (Google Voice)Geographic destinations (LCR)
Local Routing Policy
pCSCFC4/C5
MULTIPLEDATA
SOURCES
MULTIPLEDATA
SOURCES
S-CSCFDRA
AS/TAS
(ENUM, SIP, INAP, MAP, CAP, WIN, DIAMETER)
STP
MGCFMSC DEASMS/MMS
Key Issues To Consider• In-Switch Routing Model is Costly
– Provision common data into every switch– Learn routing database model for every switch– Staff routing experts for every switch– Fix routing inconsistencies across multiple platforms
• CRDB Model is a Strategic Decision– We’ve been living with cost of in-switch routing model for past 100-
years. Obviously we can continue.– Switching to a centralized model requires some strategy vision to avoid
the costs of the old model.– Introduction of IMS-Core and DIAMETER services are opportunity to
switch to a centralized model• Reduced network complexity (lower operating costs)• Faster service deployment (faster revenue generation)• Enhanced routing options (improved quality)
Blog Post: The Next Generation Signaling Core for LTE and IMS
White Paper: Scaling Diameter in LTE and IMS
Oct. 2012 Acme Packet | www.acmepacket.com
Additional Resources