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8/3/2019 Present 131011
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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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