What Operators need from NGN Standardisation

Stewart Alexander

ITU Standards Manager, BT GroupWTSA

WTSA

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?

WTSA

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

WTSA

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

WTSA

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”

WTSA

Today’s Networks

• Built on “service=technology” stove pipes.

• Every network service has its own network platform:– FR, ATM, MPLS IP VPN,

Internet, PSTN etc.

• We want a converged multi-service platform to deliver all services.

B C

Internet

Fram

e Relay

AT

M

SD

H

Cost

WTSA

21st Century Network Vision

BeginFibre to thePCP

~30,000Multi-ServiceAccessDevices

~100MetroRouters

~10CoreRouters

EndCustomer

InternetPeering

DataCentre

InternationalNetworks

LogicalNodes

~80,000PCPsin the AccessNetwork

~100,000RemoteConcs,DLAMSand Data Muxes

~1000 +Voice Switchesand Data Cross Connects

~170 CoreSwitches(DMSU / NGS)

DataCentre

LogicalNodes

Today

Aggregation Service Edge Core

Provide a common Intelligence Layer

AuthenticationAuthorisation

Presence Monitor Control Accounting

Common Data Model – LDAP interface

Application layer – Web Services .Net J2EE

Interface Protocols– INAP, MGCP, SNMP, CORBA, GMPLS, etc

PSTNand

new generationPSTNFl

exib

le use

r in

terf

ace

Web, D

TM

F,V

oic

e

M

edia

tion a

nd B

illin

g

Inte

lligence

Layer

Inte

lligence

Layer

Data networks

Internetbackbone

Transmission Layer

3rd party networks

Intelligence layer

Intelligent Service Layer – controlling IP and PSTN- and allowing controlled 3rd party access

WTSA

Partners& OLOs

ExternalInterfaces

Customersand users

BT People

3rd party APs

Integration & application development framework

EnterpriseManagement

Service Execution Service Management

Applicationexposure

PortalFunctions

TradingGateways

Commercial & Customer Management

Selling, Customer & Channel Management

Billing

Proposition Creation & Handling

Front Office functions

SupplierManagement

PortfolioManagement

BusinessIntelligence

KnowledgeManagement

&Collaboration

Finance

BusinessSupport

ServiceFulfillment

ServiceAssurance

Mediation & Pricing

Service Management agents

Application

Connectivityresources

Network location

Content

Enterprise&

Premises

Access,Aggregate

&Backhaul

Metro

CoreOptics

&MPLS

21C Network

Workforce Management& Professional Services

Network Management

Technology Management

Au

then

tica

tio

n &

Au

tho

risa

tio

n

Session control

MediaResources

Presence

Messaging

ProfileDirectory

Network ResourceModel

Network Engineering

on-demand Computing(application hosting)

PersonalCommsDevices

Outsourcing Management

Resource Management

ICT Contract Handling

Overall Architecture

WTSA

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

WTSA

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

WTSA

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

WTSA

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

WTSA

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

WTSA

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