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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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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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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