Standardization Trends for the
Next-Generation Network (NGN)
and its Transport Networks
September 28, 2006
ITU-T SG15 Chairman, NTT Senior Advisor
NTT Advanced Technology Corporation
Yoichi MAEDA
APNOMS 2006, Busan, Korea
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Outline
1. Overview of NGN Standardization
2. Transport Networks for NGN
3. Transport Network Standards in SG15
4. Future Trend of NGN related Standards
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Why NGN?
The NGN concept takes into consideration new
realities in the telecommunication industry
characterized by factors such as:
the need to converge and optimize the
operating networks and the extraordinary
expansion of digital traffic
(i.e., increasing demand for new multimedia
services, increasing demand for mobility, etc.).
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Background: ITU-T’s NGN Work
In July 2003, the Joint Rapporteur Group on NGN
(JRG-NGN) was established in SG13 to study NGN
requirements, the general reference model,
functional requirements and architecture of the
NGN, and evolution to NGN.
In June 2004,the JRG-NGN produced two Recs.
Y.2001; General overview of NGN and
Y.
2011; General principles and ref. model for NGN,
and a Focus Group on NGN (FGNGN) was formed
to accerelate NGN activities initiated by JRG-NGN.
In November 2005, the FGNGN provided a scope
of NGN Release 1 and its mandate was extended.
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NGN Global Standards Initiative
Now this NGN work is carried forward by ITU-T’s
NGN-Global Standards Initiative (NGN-GSI) to
encompass all NGN work across ITU-T SGs and to
provide the global standards of NGN.
NGN-GSI Objectives and Goals:
to address the market needs for NGN standards,
to produce global standards for NGN,
to further strengthen the ITU-T’s leading role
amongst the groups in NGN standard work,
to keep visibility of the work spread between
different technical groups in ITU-T.
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NGN Study Topics
ITU-T activities are related to the establishment of
architectures, interface specifications, and
implementation guidelines in the form of ITU-T
Recommendations for the realization of NGN.
NGN study topics include;
 Evolution of existing networks to NGN
 QoS (Quality of Service) for NGN
 Interoperability between different sys. & NWs
 Security issues in architecture, QoS, NW
management, mobility, charging and payment
 Generalized Mobility
 Service Capabilities and Architecture
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NGN Release 1 at July 2006
Rec.
SG
Status
NGN Release 1 scope
SG13
---
Y.2201
NGN Release 1 Requirements
SG13
TAP
Y.2012
Functional requirements and architecture of the NGN
SG13
AAP
Session/Border Control (S/BC) functions
SG13
---
Y.2021
IMS for Next Generation Networks
SG13
AAP
Y.2031
PSTN/ISDN emulation architecture
SG13
AAP
Y.2111
Resource and admission control functions in Next
Generation Networks
SG13
AAP
Y.2171
Admission control priority levels in Next Generation
Networks
SG13
AAP
Y.2701
Security requirements for NGN Release 1
SG13
TAP
Y.2261
PSTN/ISDN evolution to NGN
SG13
AAP
Y.2271
Call server based PSTN/ISDN emulation
SG13
AAP
Y.2091
Terms and definitions for Next Generation Networks
SG13
AAP
Q.1706
Mobility Management Requirements for NGN
SG19
AAP
Y.2000 Sup.
Y.2012 Sup.
Title
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1. Overview of NGN Standardization
2. Transport Networks for NGN
3. Transport Network Standards in SG15
4. Future Trend of NGN related Standards
APNOMS 2006, Busan, Korea
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Definition of NGN and the Transport
Rec. Y.2001 defines NGN as “A packet-based network able
to provide telecommunication services and able to
make use of multiple broadband, QoS-enabled
transport technologies, and in which service-related
functions are independent from underlying transportrelated technologies. It enables unfettered access for
users to networks and to competing service providers
and/or services of their choice. It supports generalized
mobility which will allow consistent and ubiquitous
provision of services to users.”
Broadband Access solutions to support NGN services
ADSL, VDSL, B-PON, G-PON, HomePNA
Transport networks to support Packet-based network.
SDH, OTN, GFP, MPLS, Ethernet networking
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Horizontally-Integrated Network
NGN - Convergence Model
Video Services (TV, movie, etc)
Data Services (WWW, e-mail, etc)
Telephone Services
NGN Services
Point to point, Point to multipoint,
Multipoint to multipoint
NGN Transport
Point to point, Point to multipoint,
Multipoint to multipoint
ITU-T Recommendation Y.2011
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NGN Basic Functional Architecture
Applications
ANI
Management Functions
Application Support Functions & Service Support Functions
Service
ServiceUser
User
Profiles
Service Control Functions
Service stratum
Network Attachment
NetworkFunctions
Attachment
Control
Control Functions
Transport
Transport User
User
Profiles
End-
Resource and
Admission
Control Functions
User
Transport Control Functions
Functions
Other
Networks
Transport Functions
UNI
Transport stratum
Y.2012; NGN functional requirements and
architecture of the NGN
APNOMS 2006, Busan, Korea
NNI
Control
Media
Management
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1. Overview of NGN Standardization
2. Transport Networks for NGN
3. Transport Network Standards in SG15
4. Future Trend of NGN related Standards
APNOMS 2006, Busan, Korea
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SG15 responsibility and mandates
Optical and other transport network infrastructure
Focal point in ITU-T is for the development of
standards on optical and other transport network
infrastructures, systems, equipment, optical fibers,
and the corresponding control plane technologies to
enable the evolution toward intelligent transport
networks. This encompasses the development of
related standards for the customer premises, access,
metropolitan and long haul sections of
communication networks.
Lead SG for:
 Access Network Transport (ANT)
 Optical Technology
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SG15 Study Group Structure
WP 1/15 Optical and metallic access network
 Lead study activities on Access Network Transport
standards
 Access network related standards. (PON and xDSL)
WP 2/15 Optical transport network technology
 Optical transport network Layer 1 related standards.
(Optical fibres & cables, terrestrial and submarine
systems, interfaces, components & subsystems)
WP 3/15 Optical transport network structure
 Lead study activities on Optical Technology
standards (Network architecture; network
protection/restoration, synchronization; signal &
frame structure, interfaces; network management)
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Hot Topics in WP1/15
Network Access




Key achievements; B/G-PON, ADSL, VDSL2
Optical access: Higher bit rates; increased
reach; improved system resilience, management
and control
DSL access: Reflect deployment experience;
enhanced system mgmt.; new service
requirements; increased reach and bit rates (100
Mbit/s); single ended line testing
Home Networking :  New study area on Home
Network architecture and the transport
technologies over existing customer premises
wiring.
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Hot Topics in WP2/15
OTN Technology








Key achievements; CWDM, 40 Gbit/s NNI, FEC
New fibre characteristics using other wavelength
regions
More optical channels per fibre
New transmission technologies (Soliton)
High capacity DWDM and > 40 Gbit/s
transmission system.
Free space optical line system interfaces
Raman optical amplifiers
Polarization Mode Dispersion compensators
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Hot Topics in WP3/15
OTN Structure






Key achievements; SDH, GFP, T-MPLS, ASON,
Ethernetworking, etc.
Improved network protection & restoration
Enhancements to Ethernet and other packet
based data services over transport networks
New architectures to deliver multipoint services
Synchronization issues of packet based
networks
Evolution of control plane technologies for
efficient connection configuration and fast optical
network restoration
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SG15 Public relations
Standards collaboration





IEC, IEEE, IETF, MEF, OIF, TMF, ATIS
SG4(TMN), SG6(Outside plant), SG13(NGN)
JCA (Joint Coordination Activity)-NGN
JCA-HN (Home Networking)
FG (Focus Group)-IPTV
G-PON Interoperability Showcase at ITU
Telecom World 2006

4-8 December 2006, Hong Kong, China (TBD)
Joint event of SG15 and IEEE(802.1 &802.3)

May 31 & June 1, 2007, Geneva (TBD)
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1. Overview of NGN Standardization
2. Transport Networks for NGN
3. Transport Network Standards in SG15
4. Future Trend of NGN related Standards
APNOMS 2006, Busan, Korea
Copyright (C) 2006 NTT Advanced Technology Corporation
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NGN Standardization Trends
ITU-T:
• SG13 (NGN-GSI), SG11 (Protocol）
• SG19 (Mobility), SG4 (NGNM-FG)
• SG16 (Multimedia) SG17 (Security)
• SG15 (Transport) SG12 (QoS)
• IPTV-FG
ETSI TISPAN：
• DSL access
• 3GPP IMS core
network control
Asia (CJK):
• FTTH access
• J: Ubiquitous
• K: BcN
• C: Soft Switch
TSACC (Canada):
• Cyber Security
ATIS (U.S.A.):
• IPTV (IIF)
• Network Security
and QoS
ACIF Australia):
• NGN Project
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Broadband service users in Japan
- NTT plans to provide FTTH services to 30M users by 2010.
- Monthly user increment for FTTH passes ADSL in 2004.
Users (thousand)
14.5M
ADSL
10,000
5.5M
3.3M
CATV
FTTH
1,000
Monthly
User
Increment
100
March, 2006
10
2001
2002
APNOMS 2006, Busan, Korea
2003
2004
2005
2006 (year)
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Participants of ITU-T meetings
SG15 May 2005
SG4 September 2005
Total 259
Total 67
42
62
17
4
7
8
17
17
44
20
23
1
1
Germany
38
SG13 July 2006
42
USA
Japan
China
Korea
52
Italy
3
5
8
9
2
2 2
5
5
IPTV-FG April 2006
UK
Total 262
9
Total 115
22
30
Canada
France
19
52
35
APNOMS 2006, Busan, 37
Korea
Others
15
1
2
5
7
8
14
11 Corporation
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New topics in NGN space
The NGN space is expanding. New topics
having an impact on NGN include:




Home networking
IPTV
RFID (NID: Network aspects of Identification)
Grids
The scope of the NGN programme will be
expanded to include the necessary
standards work
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Thank you
The beckoning cat, Maneki Neko,
brings Luck.
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