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A Seminar by Mrs. Anagha Bhosale

(SDE E10B, BSNL, Kolhapur)

31-12-2011

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Broad term of network that transports all

information and services (Voice, data and

any other media like video etc.)

The transportation is achieved similarly as inInternet by encapsulation into packets

Built around Internet Protocol All IP

Network

Sometimes also referred as EoIP- Everythingover IP

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NGN is a collection of technologies which

shall provide convergence for voice, data

and video services. Voice shall also be

transported through packet switching. NGN is a framework of services for next 4-5

years which shall use packet switching as the

core transport and shall be access agnostic

i.e. all types of access like fixed , wireless,IP, CDMA, GSM all can be used.

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NGN is a collection of new technologies

which allows service providers a great

flexibility to offer a variety of new services

Cost effectively In NGN basically the switching and call

intelligence functions are separated.

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NGN is a packet based network which isable to provide multimedia telecom services

and able to make use of multiple broadband,

QoS enabled transport technologies in whichservice related functions are independent

from underlying transport related

technologies.

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NGN is a concept for defining and deploying

networks, which due to their formal

separation into different layers and planes

and use of open interfaces, offers serviceproviders and operators a platform which can

evolve in a step-by-step manner to create,

deploy and manage innovative services.

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Separate Access,Transport & Switching Networks

INET

otherData

/IPNetworks

PLMN

PSTN/ISDN

Services

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Landline Network:

- PSTN/ ISDN

- Hierarchical Network

Mobile Network: GSM and CDMA- MSC, BSC, BTS etc.

Data Services:

- NIB Nodes at Circle, SSA/SDCA Level

- Connectivity at Local Exchange Level

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SDH/DWDM Network

Level-I & II TAX

Switches

Local Exchanges, GSM & CDMA

Level-I & II TAX

Switches

Local Exchanges

Customers

Customer

Customers

Current Generation Network

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Slow to develop new features and capabilities.

Expensive upgrades and operating expenses.

(High OPEX , CAPEX)

Proprietary vendor troubles

Large power and cooling requirements.

Limited migration strategy to New tech.

Product/model obsolescence.

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Government:

* High Penetration to minimize digital divide

* Mass Addressing at affordable price

* High speed Access up to last mile

* Right to Broadband

Vendor:

* Generation of new services at less cost

* Easy and fast deployment of services* Revenue Generation

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Operator:

* More & more customers to increase revenue

* Fast deployment of new services for more revenue

* Reduced cost of N/W or infrastructure

* Use of existing infrastructure

* Cover-up decreasing revenue in Voice Services (Competition

Customer:

* New services at low cost

* Bundled Services from his operator

* Personalization of services

* Freedom/ Mobility/ Simplicity

* One Bill

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Uniform service experience for users through

a uniform service system

Use different terminal devices to access the

same serviceAchieve common billing independent of

access networks

Seamless roaming and handoff between

different networks

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In otherwordsCONVERGENCE is

the needofthehour.

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Network Convergence

e.g. fixed and mobile Networks

Service Convergence

e.g. Voice call, Fax, Data Transfer

Device Convergence

e.g. Same handset for GSM, CDMA SIM

cards

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Device agnostic Service agnostic Access &

Location agnostic

SimplifiedNGNConcept

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Gateways

Internet

Wireless Telephone

System

Workstation

Integrated

Services

Over IP

Workstation

Evolving towards IP Communications

Next Generation Networks (NGN)Present Day Networks

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Eachservicehas itsownnetwork

Multipliedoperationalcosts

Each networkmanagedseparately

Noservice interaction

Multiple customerprofiles

Seamlessservicelinkage

Allservicesoveranyaccess

One networkforanyservice

Unifiedmanagementstructure

Single customer profile

Today New Service Network

Private Data

Internet Deep Access

Services EdgeMulti-service Aggregation

MPLS Core

Mobile

NB Voice

WAN

Customer Customer

Migrate

Video

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How NGN is different from

CAS or CCS 7 network?

(Why IP)

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CircuitSwitching (CAS)

Call Control

Switching

Interfaces

Call Control

Switching

Interfaces

Call Control

Switching

Interfaces

Local

Exchange

Local

Exchange

Signaling

& Bearer

Signaling

& Bearer

Bearer is a voice channel

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Call Control

Switching

Interfaces

Transit

Call Control

Switching

Interfaces

Call Control

Switching

Interfaces

Local

Exchange

Local

Exchange

BearerBearer

Call Control

Switching

Interfaces

Signaling Signaling

CircuitSwitching (CCS)

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Call Control

Switching

Interfaces

Call Control

Switching

Interfaces

Call Control

Switching

Interfaces

Local

Exchange

Local

Exchange

BearerBearer

Signaling SignalingSignaling

Transfer

CircuitSwitching (CCS)

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Call Control

Call Control

Switching

Interfaces

Call Control

Switching

Interfaces

Local

Exchange

Local

Exchange

BearerBearer

Signaling SignalingSignaling

Transfer

Bearer

Transfer

Evolution toNGN

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SIMPLE, TestedandEasy

TDM call withSS7signaling

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MultipleServices,Multipleprotocolsand

MultipleMedia

Multimediasession withSIPsignaling

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Interfaces

Switching

Call Control Call Server

IP/MPLS

Gateways

Central Office

Switch

NGN Components

SDH

Transport

with Overlay

packets for

data

Common IP MPLS Transport

NGN concept w.r.t.VoiceService

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Management

Control

Service

Transport

Access

LayeredNGNArchitecture

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AccessLayer: Combinesalltheaccess

technologieslikePOTS, ISDN,GSM/UMTS,

HFC,LMDS,ADSLetc.

TransportLayer: Thebackbone networkand

thetechniquesfortransport. It is IPbackbone.

ControlLayer: Thislayercontrols callhandling.

i.e. call/session control including call initiation

andtermination. It comprisesoftheequipmentthatmanagessignaling (SGW)and callhandling

(MediaGatewayController). MGC isalso

calledSOFTSWITCH orCallServerorCall

Agent.

LayeredNGNArchitecture

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ServiceLayer: Thislayercomprisesoftheequipmentthat centralizestheservicelogic

anddata. It isalso calledasApplication

ServerorMediaServer. It providesthe

servicestodifferent networksacrosstheverticals. Itshallbe consideredseparately

irrespectiveofnetwork.

ManagementLayer: Itspansoveralltheotherlayersand it comprisesofallthe

managementequipment.

LayeredNGNArchitecture

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ApplicationLayer

ControlBearer

Service ControlLayer Softswitch

Control

IP Service

Switching

Application

Services

TransportLayer

PSTN

Internet

Mu

ltiservicePacket Switching

XX X X

X

CORE NETWORKS

X

National Optical

Broadband

Access

GbE

DSLAM

ACCESS

NETWORK

RAS

Frame/ATM

Wireless

CPE

Media

Gateways

Metro Optical

X

XX

X

NGN alayeredArchitecturebrings

Intelligence in EveryLayer

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TypicalNGNArchitecture

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TYPICAL EXAMPLES OF NGN

Class 4 NGN (IP TAX)

Femtocell

IMS (IPMultimediaSubsystem)

SIPApplication Server

UnlicensedMobileAccess (UMA)/

GenericAccessNetwork (GAN)

Technology

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UMA/GAN Technology

BTS BSC

UMA/GAN

enabled Dual

Modehandset

UMA/GANe.g.WiFi/Bluetooth

IP

Network

UMA/GANN/w

Controller

CoreNetwork

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QoS (Quality of Service)

Subjective user satisfaction ( Speed,Accuracy, reliability, Security)

Interoperability Between Services and Networks

(Broad Series of Protocols)

Security

Generalized Mobility

Own N/w ID e.g. xyz@domainname.com

Service Capabilities and Architecture

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Scope for Research and Development

DeviceConvergence: Hardware

NetworkConvergence: HardwareCumSoftware

ServiceConvergence:Software

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Conclusion

NGN has capability to satiate varied

expectations

It is capable of boosting Internet by allowing

explosive access Prediction is difficult, especially it is about

future.- Neil Bohr

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