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NGN Next GenerationNetwork
Submitted ByShivpreet Singh Sandhu
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Principles of telecommunication networksUsing the same access line, circuit and packet networks utilize different
mechanism to provide services and to share resources.
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( )Circuit switched network schematic
( )Packet switched network schematic
access line
access line
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Existing networksToday operators run different networks which are interconnected.
. .e g G S M
. .e g P S T N . .e g In te rn e t
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m o n o lith icstru ctu re
m o b ile v o ice
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d iffe re n t se rv ice s
p a cke t sw itch e d
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Variety of networks
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Drivers and motivation for NGN deployment.External drivers and internal motivation put pressure on operators
NGN deployments.
d e ve lo p n e w servicese a sie r a n d fa ste r
e n h a n ce fle xib ility
re d u ce o p e ra tio n a lex p e n d itu re s
re p la ce o f o ld p la tfo rm s
a t th e ir e n d o f life cy cle
m a ssive g ro w th o f d a tatra ffic
fla t g ro w th o f v o icem arket
m a ssive a cce ssco m p e titio n
m a tu rity o f IP te ch n o lo g y
op en stan da rd s an da rch ite ctu re s
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 six
key criteria.
N G N
c o n c e p t
in te g ra tio n o f ex istin g in fra stru ctu re
-p a cke t orie n te d n e tw o rk
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ro a d v a rie ty o f se rv ice s
o p e n n e ss a n d fle xib ility re g a rd in g n e w se rv ice s
se p a ra tio n in to d i
ffe re n t la y e rs u sin g o p e n in te rfa ce s
-a p p licatio n fo cu sed a ccess in d e p e n d e n t
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Basic concept of Next GenerationNetwork.
An IP-based NGN is able to support a broad variety of services.
Variety of services
Vo ice o ve r IP
D ata
M u ltim e d ia
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Transition to NGN: First wave
Growth of Internet and other IP-based networks withtheir
requirements for bandwidth and capacity has driven rapidinnovation in telecommunication access and transport
networksExamples:
leveraging copper wire last-mile networksthrough digital subscriber line (DSL) technologies re-architecturing of cable networks to support IP services
advances in optical networking technologies (e.g.PON)
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Transition to NGN: Second wave
Ongoing trend towards integration & interoperability ofIP-
based and PSTN network services and applications Emergence of differentiated Quality of Service IP-based
services Managed end-to-end performance needed for new
applicationsrequiring real-time traffic (e.g., video, voice) New network management, QoS, traffic engineering,
pricing &accounting models
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Transition to NGN: Third wave
Evolution of current PSTN, mobile, wireless and
IP-based networks to unified Next GenerationNetworks
providing both Internet and carrier-gradetelecommunications
networks and services offerings with QoS Transition to Third wave:Ubiquitous & Pervasive Networks anybody, anytime, anywhere
Global Information Infrastructure (GII) ITU, 1995 EII ETSI Project (1995)
ITU NGN 2004 Project
Y.1xx ITU-T SG 13 NGN Architecture, Evolution and
Convergence
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Today Tomorrow
Telephonenetwork
Mobile radionetwork
-IP Network
- :Multimedia Access Advantages easy to handlereliablemobile
Internet
Transition toNGN
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ITU-T definition of NGN (Feb 2004)
A Next Generation Network (NGN) is a packet-based
networkable to provide services including Telecommunications
Servicesand able to make use ofmultiple broadband, QoS-
enabledtransport technologies and in which service-related
functionsare independent from underlying transport-related
technologies.It offers unrestricted access by users to different serviceproviders. It supports generalized mobility which will
allow
consistent and ubiquitous provision of services to users.
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What is NGN?(From Laymans point of view)
Next Generation Services Converged(quad-play, voice, data, video, mobile) Next Generation Access High speed
(Broadband) IP based connectivity(ADSL, VDSL ,WI-Max, Cable TV, FTTH, )
Next Generation Transport Ethernet, IP-MPLS Next Generation Architecture Service
oriented, layered (transport, control,application)
Next Generation Mobile 3G+ Next Generation Internet IPv6 Next Generation Interconnect Capacity
and Quality based
Next Generation Licensing Unified Next Generation Re ulation Conver ed
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Fundamental characteristics of NGN
* Packet-based transfer
Separation of control functions among bearercapabilities, call/session, and application/ service
Decoupling of service provision from network, and provision of open interfaces
Support for a wide range of services, applications andmechanisms based on service building blocks(including real time/ streaming/ non-real timeservices and multi-media, Triple- play)
Broadband capabilities with end-to-end QoS andtransparency
Inter working with legacy networks via open interfaces Generalized mobility support
Unrestricted access by users to different serviceproviders
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Next Generation Network Plane andFunctions
Monolithic networks evolve towards a layered NGN architecture withopen interfaces.
Application Plane enables theprovisioning of services and
provides the control and logicfor the execution of services
Control Plane controls the
,elements of the networkestablishes and tears down mediaconnections
Transport Plane is responsiblefor the transport of media and
signaling messagesManagement Plane covers network
management ensuring service,fulfillment service assuranceand billing
Access Networks connect customernetworks or terminals with thecomponents of the NGN network andaggregate the dedicated traffic
type
Planes and functionsNGN Planes
Access Networks
TransportPlane
ApplicationPlane
Control Plane
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Value AddedService
Creation
Packet BasedTransport
Basic controlservice
K d i f NGN
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Key drivers of NGNdevelopment
Short Term objective:Create new revenue possibilities
Removal of boundaries between voice anddata opens the way to new kind ofservices
Can be realized relatively quickly with
limited investments
Long Term objective:Realize cost savings
Simpler network More efficient network
Cheaper network components
Full benefit only realized when all separatenetworks have fully migrated towards tothe target solution
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Example NGN ServiceDrivers
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Transport mechanisms of theunified network
The unified network will use packet-basedtechnology as the common transportmechanism
Data is the fastest growing segment due to
Success of Internet Growing use of E-mail
Growing data traffic between businessusers
Data should be handled in the most efficientway
Packet technology is the best way totransport data
Packet technology is only technology that
allows simultaneous delivery of differentinformation streams towards one and the
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NGN architecture
Evolution of network architecture Traditional telephony - Circuit switch based
PSTN
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Evolution of network architecture(Cont.)
Circuit Switched PSTN + Packet Switched IP
network (VoIP Gateway) SG Signaling gateway
MGC Media gateway controller
MG Media gateway
vo u on o ne wor arc ec ure
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vo u on o ne wor arc ec ure(Cont.)
Completely IP-oriented network
T i l NGN hi
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Typical NGN architecture
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NGN Architecture
NGN Concept A unified packet transport layer for all types
of services A session based control architecture
For user to user voice , video and dataservices over the packet infrastructure
A common Service delivery platform Expectations from NGN
Generate new revenue streams byhaving fast roll out of new multimedia
services Secure voice revenue stream by
integrating PSTN infrastructure withNGN
Provide solution to cater to PSTN
obsolescence wherever applicable
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Requirements for NGNImplementation
Equipment and Network Interoperability betweenvarious Operators
A standards based functional architecture Standard interfaces and protocols
Ability to serve Fixed (Copper and fibre), Wireless andMobile Networks
Open Services Architecture Standard interfaces open to third party
application service providers
Q o S Control Mechanism Important for voice and video services Requires bandwidth allocation mechanism at
access level as it is shared between variousservices
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Cont
Need to share management functions likeprovisioning, metering, billing, QoS monitoring
Provide Generalized Mobility features Mobility features at the fixed access,
nomadism Provide service continuity between fixed
and mobile access leading to convergence
Common technology for transport layer
IP/MPLS has emerged as the most suitabletechnology for this layer
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Next Generation Network benefitsNGN has the potential to become the communication
network of the future.
d ev ice in d ep en d en ce
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Customer benefitsNext Generation Network
/Operator provider benefitsIP
Access Network
SDP
SDP
SDP
SDP
IMS
TransportPlane
ApplicationPlane
Control Plane
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DSLAM Radio
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Ad
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Advantages.
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Thank you