21C Telecommunications

8/9/2019 21C Telecommunications

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NGN Next Generation NetworkMSD conference, Lisbon, October2005.Stephan Berg, Deutsche Telekom Headquarters


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Konzernentwicklung NGN Next Generation Networks.ppt 2

Agenda.

Principles of telecommunication networks

Existing networks

Drivers and motivation for NextGeneration Network

Basic concept of Next Generation Network

-requirements

-functions and structures

Next Generation Network benefits

Transition to Next Generation Network


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Principles of telecommunication networks.Using the same access line, circuit and packetnetworks utilize different mechanism to provide

services and to share resources.

9%

Circuit switched network (schematic)

Packet switched network (schematic)

access line

access line


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Existing networks.Today operators run different networks which areinterconnected.

e.g. GSM e.g. PSTN e.g. Internet

CentralF

unctions

Transport

Control

Services

Transport

Control

Services

Transport

Control

Services

AccessCentralF

unctions

Transport

Control

Services

Transport

Control

Services

Transport

Control

Services

Access

fixed voice

circuit switched

monolithic structure

mobile voice

circuit switched

monolithic structure

different services

packet switched

modular structure

Variety of networks

9%


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Drivers and motivation for NGN deployment.External drivers and internal motivation putpressure on operators NGN deployments.

develop new services easierand faster

enhance flexibility

reduce operationalexpenditures

replace of old platforms at

their end of lifecycle

massive growth of datatraffic

flat growth of voice market

massive access competition

maturity of IP technology

open standards andarchitectures

Deployment of Next Generation Network

9%

Operators MotivationDrivers


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Basic concept of Next Generation Network.A Next Generation Network can be defined by sixkey criteria.

NGNconcept

integrationof existing

infrastructure

packet-orientednetwork

supportbroad

variety ofservices

opennessand

flexibilityregarding

newservices

separationinto

differentlayers

using openinterfaces

applicationfocused -access

independent


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Basic concept of Next Generation Network.An IP-based NGN is able to support a broadvariety of services.

Variety of services

Voice over IP

Data

Multimedia
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Basic concept of Next Generation Network.Next Generation Network has to fulfill the specificcharacteristics of telecommunication services.

provide adirectory

ensureprivacy/securit

y

manage thetransfer /

delivery of thecontent

collect usagedata to ensure

servicefulfillment and

to allow forbilling

establishcommunicatio

n to thedesiredpartner

characteristics oftelecommunicatio

n services


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Basic concept of Next Generation Network.Monolithic networks evolve towards a layeredNGN architecture with open interfaces.

Application Plane enables theprovisioning of services andprovides the control and logic forthe execution of services

Control Plane controls theelements of the network,establishes and tears downmedia connections

Transport Plane is responsiblefor the transport of media and

signaling messages Management Plane covers

network management ensuringservice fulfillment, serviceassurance and billing

Access Networks connectcustomer networks or terminalswith the components of the NGN

Planes and functionsNGN Planes

Access Networks

TransportPlane

ApplicationPlane

ControlPlane

Managem

entPlane

Value Added Service Creation

Packet Based Transport

Basic control service


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Next Generation Network benefits.NGN has the potential to become thecommunication network of the future.

device independence

access independence

service variety

enhanced usability

new revenue potential

improves time-to-market

easy integration of 3rd partyservices

one platform for voice, data andmultimedia

Customer benefitsNext Generation Network

Operator / provider benefits

IP

Access Network

SDP

SDP

SDP

SDP

IMS

TransportPlane

ApplicationPlane

ControlPlane

Managem

entPlane

DSLAM Radio


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Transition to Next Generation Network.Overlay approach is an option that allows for asmooth and flexible transition to NGN .

PSTN and PLMN remain the keyproduction platforms for purevoice services

NGN overlay platform is used to

serve business and consumercustomers with integratedservices

NGN overlay will be furtherdeveloped in line with marketrequirements

Substitution will not be startedas long as financial assessmentis yielding no incentive ortechnical reasons (e.g. failurerate of components or lack ofsystem support) makes itnecessary

DescriptionNGN overlay

SDP

IP

CS - Domain

IMS

OtherPSTN /

PLMN

IP-Phone

ILLUSTRATIVE

PS - Domain

SDH

OtherNGN

WWW


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