SEMINAR ON NEXT GENERATION NETWORKS (NGN) NEXT IS WHAT ??

PRESENTED BY:-MADHUSMITA SAHOOREGD NO.:-0807101026

NGN OVERVIEWNGN OVERVIEWII

NGN FEATURESNGN FEATURESIIII

NGN ARCHITECTURENGN ARCHITECTUREIIIIII

NGN CHARACTERISTICSNGN CHARACTERISTICSIVIV

NGN APPLICATIONSNGN APPLICATIONSVV

SUMMARYSUMMARYVIVI

NGN OVERVIEWNGN OVERVIEW II

NGN (DEFINITION):-NGN (DEFINITION):-Next Generation Network (NGN):A packet-

based network able to provide telecommunication services and able to make use of multiple broadband ,QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies.

It enables unfettered access for users to networks and to competing service providers and/or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users .

WHAT ARE WE TODAY

Problems of Existing network

FEATURESSlow to develop new features and

capabilities.Expensive upgrades and operating expenses.Proprietary vendor troubles .Large power and cooling requirements.Limited migration strategy to New tech.Product/model obsolescence.

What Operators want ?More and more customers to increase their revenueFast deployment of new services for more revenue.Reduced cost of the network or infrastructure.

What customers want ?New services at less cost.Value for his money.Bundled services from one operatorPersonalization of the servicesFreedom/Mobility.Simplicity

BILLS

AND MOST IMPORTANTLY

A CUSTOMER WANTS

A SINGLE INTEGRATED

PLATFORM

In other words “CONVERGENCE” is the need of the hour.

This requirement of “Convergence”

And fast deployment of new services gives birth to

NGN

OR

NEXT GENERATION NETWORKS

FEATURES OF NGNFEATURES OF NGN

IIII

WHAT COMES NEXT

NGN is characterized by the following fundamental NGN is characterized by the following fundamental aspects:-aspects:-

• Packet-based transferPacket-based transfer• Separation of control functions among bearer capabilities, Separation of control functions among bearer capabilities,

call/session, and application/ servicecall/session, and application/ service• Independence of service-related functions from underlying Independence of service-related functions from underlying

transport technologiestransport technologies• Broadband capabilities with end-to-end QoS and Broadband capabilities with end-to-end QoS and

transparencytransparency• Unrestricted access by users to different service providersUnrestricted access by users to different service providers• Generalized mobilityGeneralized mobility• Converged services between fixed/mobileConverged services between fixed/mobile Interworking with legacy networks via open interfacesInterworking with legacy networks via open interfaces

Support for a wide range of services, applications and Support for a wide range of services, applications and mechanisms based on service building blocks (including mechanisms based on service building blocks (including real time/ streaming/ non-real time services and multi-real time/ streaming/ non-real time services and multi-media) media)

Unified service characteristics for the same service as Unified service characteristics for the same service as perceived by the userperceived by the user

Decoupling of service provision from network, and Decoupling of service provision from network, and provision of open interfaces;provision of open interfaces;

Compliant with all regulatory requirements (e.g. Compliant with all regulatory requirements (e.g. emergency, privacy etc.) emergency, privacy etc.)

A variety of identification schemes which can be A variety of identification schemes which can be resolved to IP addresses for the purposes of routing in resolved to IP addresses for the purposes of routing in IP networks IP networks

ARCHITECTURE OF NGN

ARCHITECTURE OF NGN

IIIIII

Gateways

Internet

Wireless TelephoneSystem

Workstation

IntegratedServices Over IP

Workstation

Evolving towards IP Communications

Next Generation Networks (NGN)Present Day Networks

NEXT GENERATION NETWORKS

Each service has its own network Multiplied operational costs

Each network managed separately No service interaction

Multiple customer profiles

Seamless service linkage All services over any access

One network for any service Unified management structure

Single customer profile

Today New Service Network

Private Data

Internet Deep Access

Services EdgeMulti-service Aggregation

MPLS Core

OSS OSS OSS OSS OSS OSS

Mobile

NB Voice

WAN

Customer Customer

Migrate

NGN CONCEPT

Video

Service Layer

ControlBearer

Control Layer Softswitch

ControlIP ServiceSwitching

ApplicationServices

TransportLayer

PSTN

Internet

MultiservicePacket Switching

XX X XX

CORE NETWORKS

XNational Optical

BroadbandAccess

GbEGbE

DSLAMDSLAM

ACCESSNETWORK

RASRAS

Frame/ATM

Frame/ATM

WirelessWireless

CPECPE

Media Gateways

Metro Optical

X

XX

X

Access Layer:-Combines all the access technologies like POTS, ISDN,

GSM/UMTS, HFC, LMDS, ADSL etc.Connects subscribers (Legacy/IP based), AN &

PABX and trunks from PSTN,ISDN, and PLMN etc.

Converts the format of information (circuit to packet or packet to circuit) before transmitting it.

Transport Layer:- The backbone network and the techniques for

transport. It is IP backbone.The transport functions provide the

connectivity for all components and physically separated functions within the NGN.

Control Layer:- This layer controls call handling. It comprises

of the equipment that manages signaling (SGW) and call handling (Media Gateway Controller).

MGC is also called SOFTSWITCH or Call Server or Call Agent.

Service Layer:-This layer comprises of the equipment that

centralizes the service logic and data. It is also called as Application Server or Media Server

The service layer provides value-added services and operation support functions.

OP

EX

pe

r li

ne

Network size

Reduced number of managed nodes & self-routed IP backbone

TDM Technology

NGN IP Technology

Self-managing

Networks

TDM-Technology

NGN IP-Technology

Time

Re

ve

nu

es

pe

r L

ine

Revenue-generating

Applications

Innovative applications throughcommon IP denominator

Internet volumes and technologicaladvancements reduce IP costs

Demand-oriented

Infrastructure

Time

TDM-Technology

NGN IP-Technology

Co

sts

pe

r c

on

ne

cti

on

CHARACTERISTICS OF NGN

CHARACTERISTICS OF NGNIVIV

Next Generation Networks will for the most part be high speed packet based networks capable of delivering a multitude of Broadband services.

Characteristics features Include :- PROTOCOL INDEPENDENCE:-PROTOCOL INDEPENDENCE:- In order to facilitate multiple

forms of communications NGN would be capable of operating a multitude of different communications protocols.

RELIABILITY:-RELIABILITY:- Increased dependencies on

advanced applications have made NGN achieve necessary levels of resilience and reliability to support more diverse topologies and redundant elements than is normal in today's network.

CONTROLLABILITY:- CONTROLLABILITY:- NGN has the flexibility

to be able to design, adapt and optimize the networks to accommodate simultaneously different types of media with varying network requirements. The main concern here is the quality of service.

PROGRAMMABILITY:- PROGRAMMABILITY:- The more

programmable and reconfigurable the NGN are the more the ability to cope with new services and user requirements.It allows for the traffic engineering and dynamic allocation of network resources.

SCALABILTY:-SCALABILTY:- Scalability is an attribute

that helps protect the NGNs from being obsolete. It allows for the addition of capacity without the need to replace equipments.

APPLICATIONS OF NGN

APPLICATIONS OF NGN

VV

TELEPRESENCE:-TELEPRESENCE:- Telepresence is the ability

to communicate and interact in real time with another person at a different locations using telecommunications. Advanced Telepresence Systems operating on NGNs will enhance users experience of realism in communications.

3D IMAGING:-3D IMAGING:- Adding three-dimensional

aspects to the imaging systems of Telepresence will further enhance the experience of Telepresence.Other applications of it also include in medical and educational fields.

VIRTUAL REALITY:-VIRTUAL REALITY:- It involves

applications of complete Tele-immersion. However it is possible that applications will develop that blend reality and virtual reality forming hybrid realities to enhance our experience.

DATA AUGMENTATION:-DATA AUGMENTATION:- Augmentation of

data into Telepresence services in many ways prove helpful in face-to-face communications that would have files attached to them that could provide additional information.

TELE-LEARNING:-TELE-LEARNING:- NGN Tele-education will

use advanced graphical visualizations tools to help users understand difficult or abstract topics and also provide users with an opportunity to learn in a safe and non-critical environments.

TELE-MEDICINE:-TELE-MEDICINE:- Tele-medicine will allow

the transfer of records or actual medical conditions between patients and medical personnel in geographically diverse locations. It would also help a great deal in Tele-surgery.

INTERACTION AND ENTERTAINMENT:-INTERACTION AND ENTERTAINMENT:- High capacity

applications would will emerge in the areas of gaming, movies and social interactivity. It would also support networks to support multi-player real time use.

Streaming video and audio entertainment will also be important applications of NGN. Peer to peer networking of video, audio and even 3D virtual realities would also be possible through Next Generation Networks.

Advantages of NGNOne infrastructure is required.One backbone for voice and data services

instead of two parallel ones.No maintenance of proprietary switching

systems.Fewer call controlling entities in the network

so less capital and operating cost.Easier configuration of equipment.Fast advanced and new services deployment

is possible.

Disadvantages of NGNPart of the NGN equipment is still under research and

development.IP based equipment is deployed mainly in enterprise

networks major concerns about QoS.CPEs require significant investments, if mass deployed.NGN solutions are not mature enough - major concerns about QoS, reliability in case of traffic volumes, similar to those served by the PSTN.Not proven economic benefits.Lack of standards - interoperability between different

vendors’ equipment under question mark.Difficult integration between NGN equipment and the existing PSTN infrastructure.

SUMMARY:-SUMMARY:-The NGN concept takes into consideration new realities in the

telecommunication industry characterized by factors such as: the need to converge and optimize the operating networks and the extraordinary expansion of digital traffic (i.e., increasing demand for new multimedia services, increasing demand for mobility, etc.).

NGN will give users and devices the ability to communicate and to access services irrespective of change of location or technical environment. The degree of service availability may depend on several factors, including access network capabilities, service level agreements between the user's home network and visited networks, etc. using a variety of terminal equipment, with or without service continuity while in transit or while changing access means. This includes recognition of the need to converge the previously distinct worlds of fixed and mobile telecommunications into a coherent whole.

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