Post on 19-Jan-2018
description
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Next Generation Network
Gulshan Rai,
Executive Director, ERNET
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History of Communication
Telegraph
Telephone
Computer Communications• X.25• ISDN• FR etc.
ATMOptical Network
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Evolution of networks
First generation networksdesigned based on copper-based transmission
mediumexample, like Ethernet & Token Ringdisadvantage: each node has to inspect
whether incoming information meant for itfiber is not used
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Evolution of networks (continue…)
Second generation networkscopper replaced by fiberachieved higher bit rate, longer distance and higher
reliability higher network throughput due to higher transmission
rates still use traditional architecturesdisadvantage: nodes still have to process information
intended for other nodes
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Evolution of networks (continue…)
Third generation networksexploit unique features of fiber, like huge spectral
bandwidth and the low propagation loss employ lightwave techniques carriers in multiple high capacity channels, which can
be individually configuredvery high network throughputtermed as all optical networks (AON)
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Bandwidth Requirements
•Banking transaction
•File server
•B&W images
•Colour images
•Fax
•Freeze-frame video
•CD audio
•VCR-quality video
•Studio-quality video
•High-definition TV
•3D computed tomography
•Scientific visualization
Character-oriented data (max 1 KBPS)
Interactive image (max 5 MBPS)
Multimedia
(max 10 MBPS)
Data visualization
(> 50 MBPS)
Inc reasing B
andwidth
What we need is bandwidth & connections!
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The Rise of the Empowered Consumer Evolutionary Phases of Experience
Provider to User Dynamic
User to ProviderDynamic
Experience
PassiveBroadcast TV, Web Access
PickService Bundles, VoD
ParticipateInteractiveGaming, Collaborative Services
ProduceCreate Playlists, Remix, Blogs,
ConnectOne Service Fits All, Discrete Model
TransactE-Wallet
InteractPersonalization, Socialization
EmpowerComplete Customization
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Consumer Needs Are Evolving Beyond Connectivity:Requires Integrated Voice / Video / Data with Mobility
Subscriber Personalization: Actively manage the subscribers identity and adjust the service offering/packaging (i.e., different identity in different worlds)
Mass Scalability:Leverage mass-customization principles:Service-bundling; subscriber-grouping and per-group processing
Service Evolution:From transport-based service models (time/distance/volume) to content-based service models
IP NGN Infrastructure
Physical and Social Context Determines the Application Mix Used
Home Office / VPN Internet AccessIM / Group Chat IPTV/VoDOnline Gaming
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Web ServicesCollaboration Applications Storage/Computing
Convergence
Business Needs Are Evolving Beyond Connectivity:Requires Highly Available, Secure Managed Services
Helping Businesses Reduce Cost / Free Resources to Focus on Core Competency
High Availability: Managed networks can help ensure business continuity in the face of everyday interruptions and unexpected disasters
Application Awareness:Allows operators to classify applications, apply application-specific QoS policies while metering / billing for services on a converged network
Service Security:Providing firewalls and intrusion detection systems (and keeping them updated) and using encryption for all sensitive data
IP NGN Infrastructure
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… But This Approach Places Even More Stringent Requirements on the Infrastructure
Integrated• Virtualization• Application Aware• Modular Approach• Service Control• Policy Control
and Execution
Resilient• Multilayer Security• High Availability• Scalable
Adaptive• Self-Provisioning• Self-Optimizing• Self-Defending
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Transition to IPNGN
Application convergence– Integration of new service over broad band
Service Convergence– Service continuity across
Network convergence– Eliminate layers in Network for CapEx efficiencies
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Personalized “Any Play” ExperiencesAny Content to Any Device—Anywhere in the IP NGN
Enterprise Home
Small Business PSTN
Branch Office
ASP
Hotel/Airport
MobileWireless
SONET
DPTCABLE DSL DIAL
LR ETHERNET
LR ETHERNET
DWDM
METRO
On the Move
At Home
At Work
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POP Network - Architecture
Cable POP
DSL POP
Mobile POP
Optical POP))))))
))))))
Backbone Network
Internet
Content Delivery Network
Multimedia Servers
PSTN
OSS
Billing NMS
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Issues and Challenges in the Next Generation Network1. Mobility Services Management
Device Roaming Service mobility User mobility
2. Inter Operability Frame Work Inter working – WiFi Mesh open Interface that offer flexibility to Service
Provider Inter working existing Network
3. Access independent Service Control4. Traffic engineering Issues5. Routing Service/Protocol6. QoS
All kind of Service over all kind of medias Decoupling Services from Network
7. Security DDoS Protection Virus Filtering
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Thank you