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NEXTGENERATIONNETWORKS

(NGN)

DR. IRFAN ZAFAR

PTCL Training & Development 1

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At the end of this course the participants are expected to:

Identify differences in legacy networks & Next Generation Networks

Describe NGN Architecture and NGN ServicesDescribe NGN Signaling protocols and their workings

Identify media gateways and their connectivity

Describe current and future NGN trends regarding Multimedia

Services 2

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PTCL Training & Development 3

Traditional Networks

&their Services

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Voice Services: Basic telephony

ISDN (Digital services)

Mobile Telephony

Video Services: Video telephony

Cable TV

Video On Demand

Data Services:

Site-to Site Connectivity

Internet Access

4

Traditional Networks Services

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Traditional circuit switches:

-Meant for voice services

-Connectivity & switching

-Short Holding time

Circuit switches for Data Calls:

-Internet calls

-Longer Holding time

-Less bandwidth and less revenue

5

Legacy/Traditional Networks

Focus shifted from basic telephony and supplementary

to Multimedia Services for users from any place and at

any time

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6

Services

Transport

& Access

Advantage: Beneficial as a standalone systems and solutions

Disadvantage:High operational cost

Slow to deploy

Different devices are required for different services

TraditionalNetwork Services

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Access n/wAccess n/w

Switches

PSTN designed for POTS, basic copper wire line voice service

Traditional PSTNVoice Networks

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Traditional Data Networks

Frame Relay

ATMIP

Virtual

Connections

Branch Office A

Branch Office C

Branch Office B

Head Office

Public Data Networks: Providing data/LAN Connectivity

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9

HLR

VLR

MSC

GMSCBSC

OMC

Fixed Network

BTSs

Traditional Mobile Networks

Public Land Mobile Network:

Providing voice services to

mobile

and Fixed networks

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Traditional Internet Network

Internet

Network

DataBank

Web

Server

Internet: Data services exclusively, packet

switched network with some other services

Servers

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More complicated

networking and

construction

High CAPEX

Slower deployment of

new service

High OPEX

Too many sites!

MSC2

MSC1MSC5

MSC7 MSC8

MSC3MSC4

MSC6MSC..

Need more investment on sites and accessories

Need more stafffor O&M

Need more transmissions for inter-connecting

Need more time for service deployment and O&M

Complicated Legacy Traditional Network

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Telecom Service Requirements and Future Trends

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Voice95%

SMS5%

Voice

SMS

MMS

Info Services + surf

Location Services

Transactions

Business DataMachine to Machine

Multi Media

Voice

58%

2002-2010

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Future Trends

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1990 1995 2000 2005 2010

Multi-service

Multi-protocol

Simple Integration

All in IP evolution

Circuit switching-packet switching-All in IP 3GPP R5-R6, 3GPP2 Phase0-Phase3