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NGN Evolution & its Overview
Desire for a new platform:User requirements increased — MORE BANDWIDTH
Technology growth — INTELLIGENT NODES, SWITCHESFast & reliable exchange of information— HIGH TRANSMISSION SPEED
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New Services Evolution
Arrival of new Telecom services, fast packet switching and enhanced VVD laid the foundation of a New Generation of Networks or NGN for new generation of services
NGN is Voice Over IP, bypassing the regular switches to save the investment on Switches and Trunks.
NGN is Network Convergent Technology, combining wireline (PSTN), wireless (GSM, CDMA and 3G) and packet data network together, for Integrated Voice, Data and Multimedia Services.
NGN is a Flat Telephone Network over Packet Data Network, instead of traditional Hierarchy structured telephone network with reduced investment.
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What Is…
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Why NGN
Increased demand for bandwidth is not possible through existing PSTN.
Requirement for new services.
Telecom operators want to reduce the OPEX and CAPEX (Need one common network for all services).
Future proof network to handle Voice, Data and Multimedia.
Optimising and simplifying transmission links.
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NGN - Drivers
Next Generation Networks
Next Generation Networks
Operation Costcompetition
QoS configurability& verification
Meet capacityOn-demand request
Rapid introduction of new technology Voice/Data and wire/wireless integrated managementInteroperability: Multi-vendor equipment
Rapid introduction of new technology Voice/Data and wire/wireless integrated managementInteroperability: Multi-vendor equipment
Demands for new services
Diversity in Technologies
Cope withIP & mobileenvironment
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IP/MPLS Multi-Service Bearer
NGN Core Network
VIDEOVOICE DATA
Copper Optical Wireless
PSTNPSTN
GSM/CDMAGSM/CDMA
Public Data NetworkPublic Data Network
CATVCATV
SE
RV
ICE
SE
RV
ICE
SE
RV
ICE
AC
CE
SS
AC
CE
SS
AC
CE
SS
VOICE
data
data
VIDEO
VOICE
Legacy Networks & NGNLegacy Networks & NGN
Legacy Networks were dedicated and isolated networks with service specific signaling and routing for service connection
Limited Broadband and Multimedia services High OPEX High Service cost Long Service provision time Inefficient O&M Too many sites, too many types of nodes Outdated and aged Exchanges
NGN has a common IP core and provide nomadically accessible IP applications regardless of a specific access link or user device
Provide integrated services instead of limited service Centralized management and simple network structure,
reduce OPEX OPEX Saving from reduction of transmission, room space,
O&M center, etc. Realize the fast and cost effective new service deployment. • Pave the way to all-IP network
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Voice and Data Networks
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Distributed Model
MG
IP
SoftSwitch
IP
H.248/MGCP H.323/SIP
TDM
TDM
Packet Network
Application Servers
O&M
Charging
IP Phone
Centralized Model
Call Control
Line Card
Trunk Card
Time Slot Switching
TDM
O&MCharging
POTS
Phone
Basic & Supplementary Telephony services
Centralized vs Distributed ArchitectureCentralized vs Distributed Architecture
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Harmonization through Standardization
Characteristics of NGNCharacteristics of NGN
Packet-based transfer Separation of control functions among
bearer capabilities, call/session, and application/ service
Decoupling of service provision from network, and provision of open interfaces
Support for a wide range of services and applications
Broadband capabilities with end-to-end QoS
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Characteristics of NGNCharacteristics of NGN
Interworking with legacy networks via open interfaces
Generalized mobility Unrestricted access by users to
different service providers Converged services between
Fixed/Mobile Compliant with all Regulatory
requirements, for example concerning emergency communications and security/privacy, etc
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Structured network architecture, smooth evolution, variety of services available
Rapid Service provisioning Cost-effective multi-service access One IP based multi-service bearer network Retain/expand customer base and increase
ARPU (Average Revenue Per User) FMC-Fixed Mobile Convergence Synergy IMS Ready
NGN Solution Benefits
NGN Solution BenefitsOPEX SavingsReduction in number of Switching nodes and transmission
linksReplacement of obsolescent equipment with new
generation IP SolutionsLower OPEX for new NGN nodes: easier network re-
engineering, less power consumption, less space needed
CAPEX SavingsPay as you grow for Network expansion
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SignalingModule
Trunk Module UserAccess Module
Service ServerSoftSwitch
TrunkGateway
TrunkGateway
TrunkGateway
SS7SignalingGateway
Contrast between PSTN and NGN
User AccessGateway
CPU
Switching Array
Intelligent Service Server
IP Core
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PSTN End-Office Optimization and Reconstruction SolutionPSTN End-Office Optimization and Reconstruction Solution
PSTN NGN
ISDN Subscriber
DSL Subscriber
ISDN Subscriber
DSL Subscriber
Data Network
SS
Tandem Office
Gateway Toll
Office OS SCP
End Office to be-Reconstructed
LE LE
Media Gateway
E1/SDH/SONET
V5.2
FE/GE
Remote Module
Billing & Customer Care
NMS APP
iHLR
Subscriber
MSG7200 TGMSG 9000
SG7200 SG
AN orRemote Unit
Reconstructed End Office
FE/GE
FE/GE
DSLSubscriber
OLT
ONU
ONU
ONU AN
OLT
ONU
ONU
ONU MSAN
V5.2
E1/SDH/SONET
Twisted-pair Cable Twisted-pair Cable Twisted-pair Cable
Twisted-pair Cable
E1/MSTP/Build-in PDH/Build-in SDH
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