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Next Generation Network NGN Standardisation, Technology, Issues

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Title: Next Generation Network NGN Standardisation, Technology, Issues


1
Next Generation Network (NGN)Standardisation,
Technology, Issues
Parthasarathy Ganesh Rapporteur Expert Group on
Network Service Management for IP World
2
Contents
  • Motivating factors
  • Architecture
  • Technology
  • Standards
  • Issues

3
Objective
  • To build future telecom network
  • Scalable
  • Smooth migration to single network
  • Implementation based on standards
  • Capability to introduce IP based services

4
NGN architecture
server
server
Core packet network
AT
MG
MG
Multi service
mobile
telephone
5
Benefits of NGN
  • Bandwidth Savings
  • Reduced Power Consumption costs
  • Reduced Operational Costs
  • Reduced Spares and Repair Costs
  • Reduced Accommodation Costs
  • Capability to provide non voice services
  • Trunk Optimisation

6
Bandwidth Savings
  • Bandwidth Savings due to Packet Transport
  • TDM vs NGN Bandwidth requirement 41

7
Reduced Power Consumption costs
TDM vs NGN Power consumption ratio 31
DC Power consumption
8
Reduced Spares and Repair Costs
  • Due to less number of cards and fewer types of
    cards

TDM Transit SW(OCB 283) Types of Cards 36
Number of Card failures/year in a 10 KC OCB
sw (Typical figure) 10 VOIP Equipment
Types of Cards 7 Card Failures/year Expected
to be less than half
compared to TDM
9
Reduced Accommodation Costs
Due to less floor space required
Floor Space Requirement 10K TDM Transit SW (OCB
283) 5m x 11m 55
sq.m. 32PCM(1KC) VOIP Equipment
0.7m x 0.7m x 2 1 sq.m.
10
Capability to provide non-voice services
  • Spare Backbone Capacity can be used to provide
    leased bandwidth and VPN services

11
Trunk Optimisation
  • Possibility of future Trunk Optimisation by
    combining a number of routes from secondary
    transit SW and connecting to the nearest media
    Gateway
  • Dynamic trunking
  • Demand based utilisation unlike preassigned
    utilisation in TDM

12
TDM

Packet nw
Traffic
13
Cost savings
  • Less no of nodes

Core
20
4
Concentration
350
  • Terminations
  • TDM 2 mbps terminations
  • IP STM-1 terminations

14
Architecture
MGC
BS
NMS
LE
ATM/IP network
LOCAL / TANDEM XGE
MEDIA GATEWAY
LOCAL / TANDEM XGE
LOCAL / TANDEM XGE

15
Technology in the core packet network
ATM/IP
16
ATM
  • Key driving forces
  • Unique flexibility,scalability,resilience
  • Support of diff service classes enabling voice,
  • data integration into one network
  • Successfully field proven for delivering
    real-time
  • applications such as voice and video
  • Only technique providing high speed sw with QoS

17
  • IP
  • Today mainly used for data
  • New architectures are under standardisation
  • to support voice
  • QoS is a key issue for providing
  • a carrier-class telephony service

18
Multi Protocol Label Switching (MPLS)
  • Convergence of connection oriented forwarding
  • techniques internets routing protocols
  • Has ability to emulate high speed tunnels
  • Why MPLS?
  • Ultra fast forwarding
  • IP traffic engineering
  • VPN provision
  • Voice/video on IP

19
MPLS
  • Results in IP switched paths called
  • Label Switched Paths (LSP)
  • Data is forwarded along LSP
  • by means of label swapping
  • Original IP header fields are
  • swapped transparently

20
How MPLS work ?
  • MPLS network consist of
  • Label Edge Routers (LER) Label Switching
    Router (LSR)
  • LER analyse IP header to decide LSP
  • LER add corresponding local LSP identifier
  • in the form of a label
  • Other nodes forward the packet along LSP
  • identified by the label
  • Forwarding in the nodes simplified by the label

21
MPLS( Multi Protocol Label Switching)
22
MGC
SS7 Network
MGC
SS7 Network
H248/Megaco
H248/Megaco
Circuit Switch
Circuit Switch
ATM/IP Network
Home
Enterprise
Trunking Gateway
Trunking Gateway
MGC Media Gateway Controller
23
STATUS OF STANDARDIZATION
24
Technology issues
  • For public network
  • Whether ATM or IP today !
  • Whether H323 or H248 !
  • MPLS for voice !

25
ATM or IP !
  • ATM path is it preferred if
  • - No ATM network in place to exploit its
    potential ?
  • Instead of establishing a new ATM network is it
  • preferred option to build network based on IP
    ?
  • With IP in focus for future network architecture
  • IP approach is it the strategy ?
  • Interconnection/interoperability between two IP
    nw
  • is much easier than between IP ATM !!
  • QoS issues in IP implementation !!

26
ATM or IP !
  • Why IP ?
  • Standards compatibility evolution
  • more towards IP
  • IP is open standard architecture
  • Applications are IP based
  • Strong support from internet
  • Both telecom IT vendors focussing on IP

27
IP backbone
  • Router based interconnected mesh network
  • Features
  • Scalable
  • Open architecture
  • Easier Implementation of IP based software
  • Interoperable
  • Easily adaptable standards
  • Smooth interconnection in future between
  • internet segment managed segment

28
H323 or H248
  • H323 is standardised products available
  • Considered to be enterprise network solution
  • Not suitable to handle public network traffic
  • H248 is presently considered as the most
    preferred solution
  • Standards are available products are emerging
  • BICC is standardised products under development
  • MPLS for data standardised, for voice under
    process

29
Thank you
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