What Operators need from NGN
Standardisation
WTSA
Stewart Alexander
ITU Standards Manager, BT Group
Summary
• Business drivers for NGN
• Requirements for NGN
• Technical view of NGN
• What standards do we need for NGN?
• What do we want from ITU?
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What’s the Current situation?
• Telecom winter exaggerating the cost of multiple
standards – e.g. multiple networks in mobile
• All telcos under pressure to reduce expenditure on
standards
• Cost of interworking is killing us
• More and more uses are global (mobile, WLAN, Internet
etc) with more and more users travelling.
• Standards must be global
• Growing complexity from multiple fora as groups become
frustrated with speed of traditional standards bodies
• Need for a radical drive to the NGN – speed is essential.
WTSA
Why do we need an NGN?
• Make it easier to create new services
– Faster
– More people can create services
• Make it easier to buy and use services
– Give customers greater choice
• Make it simpler to deliver and maintain services
– Process automation
• 30-40% cost reduction
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What does it mean?
• New services
– Open APIs and applications platforms
– Mobile enabled
– Re-usable components/capabilities
– Build on broadband capability
• Cost reduction
– Not enough to do efficiencies and automation
– Radical network convergence to fewer networks
and systems carrying more services
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Cost Reduction
• Efficiencies and automation not enough
– need to enable customers and partners in the
service management processes
• Radical steps required
– need closure of legacy networks and systems
• Have to include future of PSTN (voice)
• More important to converge in access and
backhaul than in core
– because opex and capex centred there
WTSA
21st Century Services Vision
“A world where all our customers feel
empowered
and are treated as individuals”
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Today’s Networks
B
C
• Built on “service=technology”
stove pipes.
• Every network service has its
own network platform:
SDH
ATM
Frame Relay
Internet
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Cost
– FR, ATM, MPLS IP VPN,
Internet, PSTN etc.
• We want a converged multiservice platform to deliver all
services.
21st Century Network Vision
Logical
Nodes
Today
~80,000
~100,000
PCPs
in the
Access
Network
Remote
Concs,
DLAMS
and Data
Muxes
~1000 +
~170 Core
Voice Switches
and Data Cross
Connects
Switches
(DMSU / NGS)
Data
Centre
International
Networks
Internet
Peering
End
Customer
Logical
Nodes
WTSA
Begin
Fibre
to the
PCP
~30,000
~100
~10
MultiService
Access
Devices
Aggregation
Metro
Routers
Core
Routers
Service Edge
Core
Data
Centre
Provide a common Intelligence Layer
Presence
Control
Monitor
Accounting
Common Data Model – LDAP interface
Interface Protocols – INAP, MGCP, SNMP, CORBA, GMPLS, etc
Transmission Layer
PSTN
and
new generation
PSTN
Data
networks
Internet
backbone
3rd party
networks
Intelligent Service Layer – controlling IP and PSTN
- and allowing controlled 3rd party access
Mediation and Billing
Authentication
Authorisation
Intelligence Layer
Application layer – Web Services .Net J2EE
Intelligence Layer
Flexible user interface Web, DTMF,Voice
Intelligence layer
Overall Architecture
External
Interfaces
Enterprise
Management
Commercial & Customer Management
Selling, Customer & Channel Management
Partners
& OLOs
Billing
Customers
and users
Portal
Functions
BT People
Application
exposure
Authentication & Authorisation
Trading
Gateways
Proposition Creation & Handling
Front Office functions
Supplier
Management
ICT Contract Handling
Portfolio
Management
Outsourcing Management
Service Management
Service Execution
Application
Service
Assurance
Content
Profile
Directory
Network location
Service
Fulfillment
Session control
Network Resource
Model
Presence
3rd party APs
Business
Intelligence
Knowledge
Management
&
Collaboration
Finance
Mediation & Pricing
Messaging
Connectivity
resources
Personal
Comms
Devices
Media
Resources
Service Management agents
Business
Support
Resource Management
Enterprise
&
Premises
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Access,
Aggregate
&
Backhaul
Metro
Core
Optics
&
MPLS
Network
Management
Network
Engineering
Technology Management
21C Network
Integration & application development framework
on-demand Computing
(application hosting)
Workforce Management
& Professional Services
Highest Priority NGN Standards
Requirements
• Multi-service carrier-scale core
– enabled by underlying ‘MPLSv2’ network
• 3GPP Architecture
– extended to Wi-Fi and fixed Broadband access
• Session based QoS
• Session Control
– extensions to SIP with full multimedia capability
• Billing and charging (data interchange billing) between operators
• Manageability
– commoditised componentised OSS
• Security
– authentication across networks / operators
• Home Gateways/Networks
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What do we need to do generally..?
• Prioritise.
• Position fora, regional bodies and ITU into a
consistent approach to lead to global standards –
an architecture of standards bodies.
• Support the NGN architecture – will require us to
merge over traditional boundaries.
• Give equal weight to systems and networks
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ITU is important to NGN for:
•
•
•
•
•
•
Access Networks – SG15
Core Networks – SG13
Optical Networking – SG15
Spectrum – ITU-R
Numbering & Addressing – SG2
Signalling for QoS across multiple networks –
SG11
• Services and applications – SG16
• Security – SG17
• NGN Focus Group – to get it started and bring it
all together
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Other Important Bodies for NGN
•
•
•
•
•
•
3GPP/TISPAN – IMS
ATIS – US carrier requirements
DSL Forum – remote management of CPE
IETF – IPv6, SIP extensions, MPLS, etc
TMF – standardised OSS components
Open Mobile Alliance (OMA) – (Mobile)
Applications, DRM
• Metro Ethernet Forum (MEF) – role of Ethernet in
transport network
• IEEE 802.11x – Wi-Fi hotspots
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What do we want from ITU?
• Global Standards, speedily and efficiently
produced
How do we get this?
• A single ITU-T Study Group for core NGN
studies
• A managed release program
• A co-ordinated ITU-T approach
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Conclusions
• NGN will only succeed if based on globally
standardised components
• ITU must work with ETSI, ATIS and other
fora to achieve standards for NGN
• ITU can provide strategic focus for NGN
standards – but must create SG with
sufficient critical mass to address NGN
issues
WTSA