1. NGN – Next Generation
Networks.ppt
0
NGN – Next Generation
Network
Bayram Akbari
2. NGN – Next Generation
Networks.ppt
1
Agenda.
Principles of telecommunication
networks
Existing networks
Drivers and motivation for Next
Generation Network
Basic concept of Next Generation
Network
- requirements
- functions and structures
Next Generation Network benefits
Transition to Next Generation Network
Bayram Akbari
3. NGN – Next Generation
Networks.ppt
2
Principles of telecommunication networks.
Using the same access line, circuit and packet networks utilize
different mechanism to provide services and to share resources.
Circuit switched network (schematic)
Packet switched network (schematic)
access line
access line
Bayram Akbari
4. NGN – Next Generation
Networks.ppt
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Existing networks.
Today operators run different networks which are
interconnected.
e.g. GSM
e.g. PSTN
e.g. Internet
Central
Functions
Transport
Control
Services
Transport
Control
Services
Transport
Control
Services
Access
Central
Functions
Transport
Control
Services
Transport
Control
Services
Transport
Control
Services
Access
fixed voice
circuit switched
monolithic structure
mobile voice
circuit switched
monolithic structure
different services
packet switched
modular structure
Variety of networks
Bayram Akbari
5. NGN – Next Generation
Networks.ppt
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Drivers and motivation for NGN deployment.
External drivers and internal motivation put pressure
on operators’ NGN deployments.
develop new services easier and
faster
enhance flexibility
reduce operational
expenditures
replace of old platforms at their
end of lifecycle
massive growth of data traffic
flat growth of voice market
massive access competition
maturity of IP technology
open standards and
architectures
Deployment of Next Generation Network
Operators’ Motivation
Drivers
Bayram Akbari
6. NGN – Next Generation
Networks.ppt
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Basic concept of Next Generation Network.
A Next Generation Network can be defined by six key
criteria.
NGN
concept
integration
of existing
infrastructur
e
packet-
oriented
network
support
broad variety
of services
openness
and flexibility
regarding
new services
separation
into different
layers using
open
interfaces
application
focused -
access
independent
Bayram Akbari
7. NGN – Next Generation
Networks.ppt
6
Basic concept of Next Generation Network.
An IP-based NGN is able to support a broad variety of
services.
Variety of services
Voice over IP
Data
Multimedia
Bayram Akbari
8. NGN – Next Generation
Networks.ppt
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Basic concept of Next Generation Network.
Next Generation Network has to fulfill the specific
characteristics of telecommunication services.
provide a
directory
ensure
privacy/security
manage the
transfer /
delivery of the
content
collect usage
data to ensure
service
fulfillment and
to allow for
billing
establish
communication
to the desired
partner
characteristics of
telecommunication
services
Bayram Akbari
9. NGN – Next Generation
Networks.ppt
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• NGN architecture generalized in four layers
Network services
Network control and
management
Core network
Access network
Bayram Akbari
10. Interfaces
Switching
Call Control
Application
& Service
Control Server
IP Routing
Gateways
PSTN Switch NGN Components
NGN v/s PSTN- 90 degree shift
SDH
Transport
with Overlay
packets for
data
Common IP MPLS/Ethernet
Transport
NGN – Next
Generation 9
Bayram Akbari
16. Overview of DSL Architecture
Topology
File Edit LocateView Help
Moun t
431 7 437
1950 79%
/
Network
Traffic H
elp
Splitter
DSL modem
DSLAM
Broadband
Network
Telephone
switch
(PSTN)
Customer Premises
Central Office (CO)
Combined Signal
0 to 1 MHz
Voice Band
0 to 4 kHz
ADSL Band
40 kHz – 1 MHz
Splitter
17. PSTN
Topology
File Edit LocateView Help
Moun t
431 7 437
1950 79%
/
Network
Traffic H
elp
DSLAM
Broadband
Network
Telephone
switch
Customer Premises
Central Office (CO)
IAD
GW
Data Traffic
Voice Traffic (Packetized)
Both voice and data
use the high
frequency band
(40 kHz-1MHz)
Overview of DSL Architecture
19. Confidential Information
of Huawei.
Security Level: Internal 18
NGN using standard protocol
ISUP
IN OSS
PARLAY/
SIP
SNMP/MML
AppServer
SG
PSTN
switch
STP
Packet Core Network
TMG
PLMN
MGW
Soft-phone
SIP/
H.323
SIP-T/BICC/H.323
Softswitch
IAD
AMG
H.248/MGCP
TRIP
Location Server
H.248
M2UA/SCTP
H.248
Softswitch
MRS
MGCP/H248/SIP
INAP
M3UA/SCTP
20. Core IP/MPLS Networks
User
Schematic view of NGN
DSL
ASP
Networ
k
WEB
ASP
Network
VoD
DOCSIS
IMS
MMS
GSM
Wi-Fi
Access
Transport
Services
SIP
PSTN
PSAP
Network
E911
23. H.248A/MEGACO Overview
• MEdia GAteway Control
Protocol [RFC3015]
• H.248 is ITU-T reference for the
same protocol
• Protocol for controlling
telephony gateway and
terminals (IP Phones)
• Basis for Vendor Independent
Network deployment
NGN – Next
Generation
24. Signaling Standards
• Media Gateway Control Signalling
– H.248/Megaco
• Call Signalling
– SIP and SIP-T
– H.323
NGN – Next
Generation
Networks.ppt
25. What is H.323?
• H.323* is a multimedia
conferencing protocol, which
includes voice, video, and data
conferencing, for use over
packet-switched networks
* H.323 is “ITU-T Recommendation H.323: Packet-based
multimedia communications systems”
NGN – Next
Generation
27. SIP
• SIP is the core protocol for initiating,
managing and terminating sessions in the
Internet
• These sessions may be text, voice, video
or a combination of these
• SIP sessions involve one or more
participants and can use unicast or
multicast communication.
NGN – Next Generation
Networks.ppt
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29. NGN – Next Generation
Networks.ppt
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First NGN Network in KISH
The first NGN network in Iran;
100％ inheriting all PSTN/ISDN services such as basic and supplementary Voice,
modem, fax services etc;
Providing value-added services such as Video Communication, IPTV, BroadBand,
Data, IP Centrex etc;
Unified Network Management System and billing;
SoftX3000
NMS
PSTN
E1
SS7 UMG
IAD
ONU
ONU
NE40
L3526
L3526
TDM/E1
IP/FE
DSLAM DSLAM
xDSL
DSLAM
IP TV
ONU DSLAM
ONU
Hormoz Market
Sadaf Tower
IT Center
Financial Center
Pardis II
Center Office of TCKISH
Bayram Akbari
30. Internet
Cable/Broadcasting
Mobile
PSTN Concept of Next Generation Networks
Today
Multiple Single-service
Networks
Services
ess Transport & Switching Networks
Servers
Clients
Backbone Network
Wired
Access
Wireless
Access
Tomorrow
Single Multi-service
Network
Communication Control
Content Content
Expensive Efficient
36. 35
Changing Telecoms Trends
• Fixed line usage is reducing dramatically for “classical”
services
• Mobile use is increasing steadily even though
penetration is already high.
• Broadband Internet deployment shows a rapid growth
trend.
Broadband
Mobile
Fixed
45. 44
These Trends are pushing
for…
• Fixed – Mobile Convergence (FMC)
– the integration of mobile and fixed technologies to enable
the seamless distribution of services over fixed and
mobile broadband networks
51. NGN – Next Generation
Networks.ppt
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Different levels of NGN architecture
Bayram Akbari
& Services
52. NGN – Next Generation
Networks.ppt
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Integration of Voice and Data
- IP based Voice Service equitable with Fixed Voice quality assured
Integration of Fixed and Mobile
- Seamless services between Fixed and Mobile using integrated TE
Convergence of Telecom and Broadcasting
- Personalized very high quality Bi-directional Multi-media services by FTTH and 4G
CGN NGcN
Service
Broad
c.
xDSL
Optics
Coax.
CMTS
Sat. B.S.
Land B.S.
Mobile Net.
CATV &
Internet
Broadcast.
CM
STB
DSLAM
Internet &
Other serv.
Voice &
Mobile Data
C.O
Fix. voice &
Sup. Service
PSTN
IP based
Broadband Net.
Optics
Broadcas. Net
Voice Net.
C.O Media
Gateway
Internet
Integrated Services Network of NGcN
1. NGN Concept and Architectural Requirements
Bayram Akbari
53. NGN – Next Generation
Networks.ppt
52
First NGN Network in KISH
The first NGN network in Iran;
100％ inheriting all PSTN/ISDN services such as basic and supplementary Voice,
modem, fax services etc;
Providing value-added services such as Video Communication, IPTV, BroadBand,
Data, IP Centrex etc;
Unified Network Management System and billing;
SoftX3000
NMS
PSTN
E1
SS7 UMG
IAD
ONU
ONU
NE40
L3526
L3526
TDM/E1
IP/FE
DSLAM DSLAM
xDSL
DSLAM
IP TV
ONU DSLAM
ONU
Hormoz Market
Sadaf Tower
IT Center
Financial Center
Pardis II
Center Office of TCKISH
Bayram Akbari
55. NGN – Next Generation
Networks.ppt
54
Basic concept of Next Generation Network.
Monolithic networks evolve towards a layered NGN
architecture with open interfaces.
Application Plane enables the
provisioning of services and
provides the control and logic for
the execution of services
Control Plane controls the elements
of the network, establishes and
tears down media connections
Transport Plane is responsible for
the transport of media and
signaling messages
Management Plane covers network
management ensuring service
fulfillment, service assurance and
billing
Access Networks connect customer
networks or terminals with the
components of the NGN network
and aggregate the dedicated traffic
type
Planes and functions
NGN Planes
Access Networks
Transport
Plane
Application Plane
Control Plane
Management
Plane
Value Added Service Creation
Packet Based Transport
Basic control service
Bayram Akbari
56. NGN – Next Generation
Networks.ppt
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Next Generation Network benefits.
NGN has the potential to become the communication
network of the future.
device independence
access independence
service variety
enhanced usability
…
new revenue potential
improves time-to-market
easy integration of 3rd party
services
one platform for voice, data
and multimedia
…
Customer benefits
Next Generation Network
Operator / provider benefits
IP
Access Network
…
SDP …
SDP …
SDP …
SDP
IMS
Transport
Plane
Application Plane
Control Plane
Management
Plane
DSLAM Radio
Bayram Akbari
57. NGN – Next Generation
Networks.ppt
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Transition to Next Generation Network.
Overlay approach is an option that allows for a smooth
and flexible transition to NGN .
PSTN and PLMN remain the key
production platforms for pure
voice services
NGN overlay platform is used to
serve business and consumer
customers with integrated services
NGN overlay will be further
developed in line with market
requirements
Substitution will not be started as
long as financial assessment is
yielding no incentive or technical
reasons (e.g. failure rate of
components or lack of system
support) makes it necessary
Description
NGN overlay
SDP
IP
CS - Domain
IMS
Other
PSTN /
PLMN
IP-
Phone
PS - Domain
SDH
Other
NGN
WWW
Bayram Akbari
58. 64k 384k 1.5M 8M 20M 40M 100
M
From Telephony to IBMW
Telephony Broadband
Optical Fiber
ADSL
UWB
3G Mobile Wireless
LAN
Fixed
Telephone
ISDN
Mobile
Phone
Analog Digital Packet IP
From PSTN to IP Network
I : Internet
Ｂ: Broadband
Ｍ: Mobile
Ｗ: Wireless
59. NGN – Next Generation
Networks.ppt
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Bayram Akbari
