The 21st Century Network

Keith Dickerson

Head of Standards BT Group

Standards Requirements

Agenda

• Why a 21st Century Network?• What does a 21st Century Network

look like?• What new Standards are required?• What do ITU and fora need to do?

Why a 21st Century Network?

• Make it easier to create new services– Faster– More people can create

• Make it easier to buy and use services– Enable customers

• Make it simpler to deliver and maintain service– Process automation

• 30-40% cost reduction

What does it mean?

• New services– Open APIs and applications platforms– Mobile enabled– Re-usable components/capabilities– Build on broadband

• Cost reduction– Not enough to do efficiencies and automation– Radical network convergence to fewer

networks and systems carrying more services

– Converge in from the edge

21st Century Services Vision

“A world where all our customers feel empowered

and are treated as individuals”

New Services (1)Multimedia calling (SIP)

Video Downloads

Broadcast TV

Teleworking

Gaming

• Virus scanning• Firewalls• Back-up• Encryption

Security

• VoIP, video,Instant messaging, photos, movies,sharing, games

• 4.7Gbyte DVD can be stored on CD• Could be streamed (nrt) in ~3 hours• Microsoft XBox will become a STB• Digital Rights Management?

• Wholesale Broadcast TV distribution service• Only available to BB Customers• Biplay service (or tri-play)• Services integrated by CPE (or by SP)

• Remote LAN access• Security / encryption• Roaming

• Low latency• downloading• QOS management

New Services (2)• Broadband

– Move from selling best effort pipe to assured services charged per session/time/

– Provide one way assurance (VOD, Turbo button etc) but also two-way multimedia calling

– Allow anyone to create services• Business

– Provide ICT service, managed desktop, storage, hosted applications… Build on IPVPN to have any access, including work at home, cellular and WLAN

• Future voice– Derived/replacement where needed– Multi-media in both consumer and business

• Mobility– Support mobile terminals– Build on IM/mobile presentation to provide roaming over

any access– Personal and terminal mobility

Cost Reduction

• Efficiencies and automation not enough– need to enable customers and partners

in the service management processes• Have to include future of PSTN (voice)• Radical steps required

– need closure of legacy networks and systems

• More important to converge in access and backhaul than in core– because opex and capex centred there

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

Today's network has many access aggregation devices

Voice

Broadband

Copper

Fibre

MDF

PDH/PSTN

MSIP/MSH

MESH/MSH

PDH/MESH/MSHData

Services

~6000 exchange sites

CWSSDPCN..

DWSSASDH…

RCU

DSLAMs

Network Infrastructure

400,000 fibres

~30,000 boxes

~32,000 boxes

500,000 circuits

~25,000boxes

5mpairs

23m pairs

5m pairs

~9,000 boxes

For 5 million Broadband and

23 million PSTN customers

40 m pairs

TOTAL ~74 m pairs : 400,000 fibresTOTAL ~100,000 boxes

Service Management

Multiple service management organisations and systems

Multiple FibreData Service Mgt

Narrow BandService Mgt

Mid BandService Mgt

Broad BandService Mgt

Multiple CopperData Service Mgt

6+ service Mgt Organisations

The future will be based on amulti-service access node

Voice or Broadband

Copper

Fibre

MDFIntegrated test and operations

MULTIMEDIA

Data Services

Multi-ServiceAccess Aggregator

For 5 million Broadband and 23 million PSTN customers

40m pairs Up to 23m pairs

500,000 circuits

400,000 fibres

~ 63m pairs : 400,00 fibres ~30,000 boxes

Up to 15% reduction! Up to 70% reduction!

Single service management organisation

Fewer devices, simpler service management

Network Infrastructure Service Management

Multi BandService

Management

Transmissione.g.MSH

Today's service network edge is made up of many dedicated switches and routers

MESH

MSH and UBB

PDHDPCN

MESH and MSHMSIP

MSHEthernet

UBB

FixedInternet

Dial Internet

KiloStream

ATM and FR

EtherStreamMetroStream

MSH and UBBIPVPN

BTnetMetro

Equip

IPClear

Fusion

IPenabled

Webport Surfport

PDHDLEPSTN

Network Infrastructure Service Management

IPVPNData Service Mgt

Narrow BandService Mgt

Private CctService Mgt

InternetService Mgt

L2 Data ServicesService Mgt

SDHService Mgt

6+ service management organisationsMultiple service management organisations and systems

Target 21CN metro node - multi-service design

VoiceKiloStream

SDH

CellStreamFrameStreamEtherStreamMetroStream

BTnetRich Media Services

Webport

UBB

Outer core

TDM

DialInternet

ATM/FR

Ethernet

IP

IP VPN

MULTIMEDIA

Multi Service Edge

To/FromAggregation

Nodes

Single service management organisation

Network Infrastructure Service Management

Multi-Service Management

Fewer devices, simpler service management

Today's multiple core networks mirror the individual service networks

PDH

MESH

MSH

MSH and UBB

WDMUBB

IP CoreRouter

WDMUBB

ATM CoreSwitch

PSTN DMSUSwitch

PSTN DISCSwitch

PSTN NGNSwitch

Network Infrastructure Service Management

PDH Service Mgt

IP ServiceManagement

UBBService Mgt

WDMService Mgt

4+ Service Mgt

organisationsMultiple service management organisation and systems

The target is for a multi-service core, with high capacity optical cross connects

WDM WDM

MPLSCore

Network Infrastructure Service Management

Single Service Management Organisation

Multi-Service Management

Multi-service principle - fewer devices, simpler service management, lower cost to build and operate

Intelligent applications – today

IN IN

IN IN IN

Today’s intelligence is built into each PSTN switch

- limited central intelligence in the IP network

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

Home Gateway

CustomerGateway

Access

Interface

EU

D-H

N1

Interface

End User device

EU

D-H

Nn

Interface

CG

-HN

1Interface

End User device

IF-1

IF-2 IF-4IF-3

IF-6

IF-5

IF-7

IF-8

Management & Control API

Diagnostics API

CG

-HN

nInterface

ContentProvider

ServiceProvider

NetworkProvider

IF-9IF-10

Home Network 1

Home Network n

Customer Environment

NT

M&C API

Diag API

M&C API

Diag API

Mobility Architecture

PS-CN

PSTN

PUBLICIP NETWORK

IMS VOIP

InternetServices

Telephony

MGW

T-SGW

P-CSCF I-CSCF S-CSCF

MGCF

Service Layer

Gateway

Traffic

Signaling

WLAN

UE

VOIP or MM Services

WLANAP

Fixed (e.g. Broadband)

Access

WLANNC

AAA

DS

LAM

IP v6Capable

Core Network + Mobile IP v6

GatewayFA

RAS

Application Layer

HSSOLO

Service Layer HSS

Non-SIM HSS

OSS Architecture

DEF

ABC Low OSS ImpactKey:

High OSS Impact

BusinessManagement

Middleware Functional Layer

CRM

RetailBilling

InterconnectBilling

WholesaleBilling

NetworkManagementLogistics

Number & Naming

Management

3rd PartyManagement

Pre-payManagement

ProductManagement

FraudManagement

Credit/AddressCheck

PaymentGateway

UserPortal

GIS

UsageMediation

ProvisionMediation

InventoryManagement

OrderManagement

TroubleManagement

PersonalisationManagement

Cellular I/WGateway

B2BGateway

ProcessManager

AAA

Process-Specific Function

GHI

Medium OSS Impact

ApplicationArchitecture

Application environments

Application la

yer

U1

Service Provider

Framework

Capability Exposure Functions

Service

Provider

Service

Provider

Generic Service

Components

UsersUsers

Applications

External registry

G2G1

S2

S1

R1

A1

Example Architecture Implementation

Packet SwitchedNetworks

Sessioncomponent

Common components

.Net

App

J2EE

AppWeb

Sphere

App

Infrastructure layer

.net

App

J2SE

Appperl

App

J2EE

App

WebSphere

App

App Env

App

Open IF

Liberty withframework

WebServ

App Env

AppWeb

App

Circuit SwitchedNetworks

Session component

Application layer

Service D

omain

Open IFOpen IFOpen IF

Profile

Messaging

Term

inal Caps

LocationP

resence

Billing

Call history

Netw

ork Caps

Term

inal S

tate

User D

ata

QoS

Profile

Messaging

Term

inal Caps

LocationP

resence

Billing

Call history

Netw

ork Caps

Term

inal S

tate

User D

ata

QoS

Publish

Service

Provider

Service

Provider

Service provider framework

Service provider portal

ParlayParlayX with

frameworkSIP Servlets with

framework

Highest Priority 21CN Standards Requirements• 3GPP Architecture extended to WLAN and

fixed Broadband access• QoS

– MPLS (Session) based QoS• Session Control

– extensions to SIP with full multimedia capability

• Manageability– Commoditised componentised OSS

• Security– Authentication across networks / operators

ITU is important to 21CN for:

• Access Networks – SG15• Core Networks – SG13• Optical Networking – SG15• Spectrum – ITU-R• Numbering & Addressing – SG2• Signalling for QoS across multiple

networks – SG11• QoS Architecture in SG16?

Important Fora for 21CN

• 3GPP – Mobility Architecture• IETF – IPv6, SIP extensions, MPLS, etc• TMF – standardised OSS components• Open Mobile Alliance (OMA) – (Mobile)

Applications, DRM• Metro Ethernet Forum (MEF) – Gigabit

Ethernet• IEEE 802.11x - WLAN• W3C – Privacy, Web Services• Liberty Alliance – Single Sign On

Conclusions

• 21st Century Network will only succeed based on standardised components

• ITU must work with fora and consortia to achieve standards for 21CN

• ITU-T Informal Forums Summit (IFS) must lead way