Transcript Access Networks

International Telecommunication Union
The Telecommunication Standardization Sector
Fabio Bigi
ITU/TSB
E-mail: [email protected]
Seminar on future network evolution
(Caracas, 14 May 2001)
ITU-T studies and products
F. Bigi, Deputy Director, TSB
1.
Introduction
2.
ITU-T studies
3.
ITU-T products
4.
ITU-T strategy and priorities
5.
Conclusion
1
International Telecommunication Union




A UN Specialized Agency
Intergovernmental organization, governments
represented through their telecommunication
Administrations (constitutional Members)
Other entities (Recognized Operating Agencies,
Scientific Industrial Organizations, regional and
international organizations) admitted as Sector
members
“Basic Law” = Convention and Constitution, to be
modified by Plenipotentiary Conferences
2
How to join ITU-T

ITU-T Sector Members
– Contribution (min half unit = 31500 CHF)
– Participation (all Study Groups)
– Role (up to Chairman)

ITU-T Associates
– Contribution (10500 CHF)
– Participation (one Study Group)
– Role (up to Rapporteur)
3
Delegate’s guidelines



Information paper for Participants,
Rapporteurs and Chairmen (January 2001)
Author's Guide for drafting ITU-T
Recommendations
see also http://www.itu.int/ITU-T
4
The current structure of ITU-T Study Groups

SG 2 - Operational aspects of service provision, networks and performance

SG 3 - Tariff and accounting principles including related telecommunications
economic and policy issues

SG 4 - Telecommunication management, including TMN

SG 5 - Protection against electromagnetic environment effects

SG 6 - Outside plant

SG 9 - Integrated broadband cable networks and television and sound
transmission

SG 11 - Signalling requirements and protocols

SG 12 - End-to-end transmission performance of networks and terminals

SG 13 - Multi-protocol and IP-based networks and their internetworking

SG 15 - Optical and other transport networks

SG 16 - Multimedia services, systems and terminals

SG17 - Data networks and software for Telecommunication

SSG

TSAG - Telecommunication Standardization Advisory Group
- Special Study Group "IMT-2000 and beyond"
5
Lead Study Groups in specific areas of study

SG 2 - Lead Study Group for service definition, numbering and routing

SG 4 - Lead Study Group on TMN

SG 9 - Lead Study Group on frame relay and for communication system security

SG 11 - Lead Study Group on intelligent networks

SG 12 - Lead Study Group on Quality of Service and performance

SG 13 - Lead Study Group on IP related matters, B-ISDN, Global Information
Infrastructure and satellite matters

SG 15 - Lead Study Group on access network transport
Lead Study Group on optical technology

SG 16 - Lead Study Group on multimedia services, systems and terminals
Lead Study Group on e-business and e-commerce

SG17 - Lead Study Group on frame relay and for communication system security
Lead Study Group on languages and description techniques

SSG - Lead Study Group on IMT 2000 and beyond and for mobility
6
Special Projects
 IMT-2000 Network Aspects (SSG)
 Call Back (SG 3)
 Accounting Rate Reform (SG 3)
 TMN (SG 4)
 IP Cablecom (SG 9)
 Quality of service and performance (SG 12)
 IP (SG 13)
 GII (SG 13)
 Access Networks (SG 15)
 Optical Networks (SG 15)
 Mediacom 2004 (SG 16)
 E-commerce and E-business (SG 16)
7
ITU-T structure
WORLD TELECOMMUNICATION
STANDARDIZATION ASSEMBLY
TELECOMMUNICATION
STANDARDIZATION
ADVISORY GROUP
STUDY GROUP
STUDY GROUP
WORKING
PARTY
WORKING
PARTY
WORKING
PARTY
R
R = RAPPORTEUR GROUP
STUDY GROUP
R
R
R
8
Standardization Requirements
 Architecture
 Access Networks
 Transport Networks
 Terminals
 Services
 Coding
 Numbering
 Mobility
 QoS and Network Performance
 Interworking and Interoperability
 Market Oriented
9
Approval time for ITU-T Recommendations

-1988
1989-1993
1993-1996
1997-2000

2000 -



4 years
2 years
18 months
9 months (5 months in
exceptional circumstances)
Minimum 4 weeks (AAP)
9 months (TAP)
AAP = Alternative Approval Procedure
TAP = Traditional Approval Procedure
10
Technological trends in the
“Information Society”





digitisation in the storage, processing and
transmission of information;
increasing computer and signal processing power;
convergence between technologies, e.g. between
information technology and telecommunications;
and between interactive applications and
broadcasting;
increasing overlap of home and business markets,
with consequent increase in functionality and
decline in hardware prices;
more rapid product launch times and reducing
product lifecycles.
11
Series of ITU-T Recommendations (A-L)
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
L.
Organization of the work of ITU-T
Means of expression: definitions, symbols, classification
General telecommunication statistics
General tariff principles
Overall network operation, telephone service, service operation and
human factors
Non-telephone telecommunication services
Transmission systems and media, digital systems and networks
Audiovisual and multimedia systems
Integrated services digital network
Transmission of television, sound programme and other multimedia
signals
Protection against interference
Construction, installation and protection of cables and other elements of
outside plant
12
Series of ITU-T Recommendations (M-Z)
M.
N.
O.
P.
Q.
R.
S.
T.
U.
V.
X.
Y.
Z.
TMN and network maintenance: international transmission systems,
telephone circuits, telegraphy, facsimile and leased circuits
Maintenance: international sound programme and television
transmission circuits
Specifications of measuring equipment
Telephone transmission quality, telephone installations, local line
networks
Switching and signalling
Telegraph transmission
Telegraph services terminal equipment
Terminals for telematic services
Telegraph switching
Data communication over the telephone network
Data networks and open system communications
Global information infrastructure and Internet protocol aspects
Languages and general software aspects for telecommunication
systems
13
Other ITU-T publications

WTSA Resolutions

Appendixes

Supplements

Handbooks

Directives

ITU Operational Bulletin
14
TSB databases

ITU-T patent database

International numbering resources

A.4, A.5 and A.6 recognized organizations

Terms and definitions

List of ITU-T Recommendations

ITU-T Work programme

ASN.1 module database – in progress
15
Technology Landmarks











Telegraph
Telephone
Radio
TV
PCM
Satellites
Optical
IP-based networks
Mobility
Convergence
GII
16
Evolution of voice coding

4 kHz band - analogue

64 kbit/s
- PCM, G.711, 1972

32 kbit/s
- ADPCM,G.721,1984

16 kbit/s
- G.728, 1992

8 kbit/s
- G.729, 1996

4 kbit/s
- (G.4kbps), 2001?
17
Evolution of still picture coding

Classic facsimile (G3, G4)
T.4, T.6

B/W still pictures (JBIG)
T.82,T.83

Cont. tone colour (JPEG)
(JPEG-LS)

T.81
T.86

In progress
(JPEG-2000) T.800

In progress
(Motion JPEG 2000)T.802
18
Evolution of moving picture coding

H.261 - video coding at n x 64kbit/s

H.262 - generic video and audio coding

H.263 - video coding for low bit rates

H.26L
- in progress
- improved multimedia video coding
19
Evolution of transmission systems

Analogue

Digital

SDH

ATM

Optical
20
Access network
OPTICAL
ACCESS
622 Mbit/s
50 Mbit/s
VDSL
25 Mbit/s
8 Mbit/s
HDSL/
ADSL
2 Mbit/s
640 kbit/s
ISDN
Analog
modems
128 kbit/s
56.6 kbit/s
28.8 kbit/s
Year
9.6 kbit/s
1989
1997
2000
21
Optical networking - now

Fully optical networks

Increased bit rates (up to 40 Gbit/s)

Use of multi-wavelength techniques DWDM

Use of optical amplifiers

Interoperability and interconnection

Submarine optically amplified DWDM

Access networks for new high speed services
22
Optical networking - future

Soliton transmission

Coherent transmission

Increased repeater span
23
IP project – areas of study

Integrated architecture

Impact to telecommunications access infrastructures of access to IP
applications

Interworking between IP based network and switched-circuit networks,
including wireless based networks

Multimedia applications over IP

Numbering and addressing

Transport for IP-structured signals

Signalling support, IN and routing for services on IP-based networks

Performance

Integrated management of telecom and IP-based networks

Security aspects

Network capabilities including requirements for resource management

Operations and Maintenance (OAM) for IP
24
Ensuring global interoperability

Quality of Service (QOS)

Numbering and routing

Security

Tariffs and Accounting rates

Interworking
25
The race for 3G: IMT-2000
Data Transmission Speed - kbit/s
2,000
1G
2G
3G
Video Streaming Remote
Still
Imaging
384
Audio Streaming
144
Text Messaging
128
Video on
Demand:
Sports, News
Weather
Video
Conference
(Lower quality)
Image Mobile TV
Video Surveillance,
Video Mail, Travel
Voice
64
Electronic
Newspaper
Voice
Mail
32
Fax
9.6
Telephone
(Voice)
0
Medical
Video
Service
Conference (Medical
(High quality) image)
JPEG
Still Photos
Electronic
Publishing
Karaoke
E-Mail
Mobile
Radio
Audio
Voice-driven Web Pages
Streaming Audio
Data
Weather, Traffic, News,
Sports, Stock updates
Source: Adapted from Motorola.
E-Commerce
Time
26
Summary of Mandate of ITU-T SSG (1 of 2)

Lead SG on IMT-2000 and beyond and for
mobility

Primary responsibility within ITU-T for overall
network aspects of IMT-2000 and beyond
– Work plan
– Migration path from existing IMT-2000 systems
towards systems beyond IMT-2000
• Long term common IP-based architecture
• Near term IP-based internetworking
– Overview road map
– Interworking functions, if not done elsewhere
27
Summary of Mandate of ITU-T SSG (2 of 2)
•
In addition, will study:
• Harmonization of IMT-2000 Family members as they evolve
beyond IMT-2000
Evolution of network aspects utilizing IMT-2000 RTTs as FWA
Network aspects of convergence of fixed and wireless networks
Standardization of IMT-2000 interfaces where needed
•
•
•
•
•
•
•
Work with ITU-D to assist developing countries in applying
IMT-2000
Collaborate with ITU-R 8F (radio) and 8D (satellite)
Strong cooperative relations and complementary programs with
SDOs, 3GPPs
May develop and approve Recommendations
• may investigate and make proposals to TSAG on alternative types
of output and associated approval process, e.g., normative
technical specifications or interim Recommendations
•
Make use of provisional working procedures specific to SSG
28
List of Questions (projects)
Q.1 Service and network requirements
Q.2 NNI mobility management protocol
Q.3 Identification of existing and evolving IMT2000
systems
Q.4 Interworking functions to be used with existing
and evolving IMT2000 systems
Q.5 To participate in the preparation of a Handbook
on IMT-2000
Q.6 Harmonisation of existing IMT-2000 systems
Q.7 Convergence of fixed and existing IMT-2000
Systems
Q.8 Special study group working procedure
29
IPCablecom


A set of interface specifications and protocols that
have been developed by the cable television
industry and product vendors to deliver voice and
video services over the hybrid fiber coax (HFC)
cable systems utilizing the J.112 data delivery
Recommendation.
Utilizes a network superstructure that overlays the
two-way, data-ready broadband cable access
network.
– While the initial IPCablecom offering is packet-based voice
communications for existing and new cable subscribers, the
long-term project vision encompasses a large suite of
packet-based services.
30
Planned Workshops

IP/Optical (24-26 April 2002)

MEDIACOM/IP Cablecom (9-11 October
2002)

IP/Mobility (March 2003)

Convergence/Future Evolution
(October 2003)

Other possible items to be considered
on the basis of requirements
31
Meetings with Workshops in other
Regions in 2001

Future Network Evolution: (Caracas 14 May 2001,
SG 13 Meeting)

Multimedia in the 21st Century – Systems, services and
terminals: (Puerto Seguro, 4-5 June 2001, SG 16
Meeting)

ITU-T and ITU-D Promotion of and Highlight on SG 17
(SGs 7 & 10): (Bangalore, 30-31 August 2001, SG 7
Meeting)

QoS and User-Perceived Transmission on Quality in
Evolving Networks (Dakar, 12-19 October 2001, SG 12
Meeting)

SG 5 in Vietnam (date and subject to be agreed upon)
32
Draft ITU-T Strategic Plan for 2003-2006
Mission



Facilitate the identification of areas where
recommendations (standards) should be
developed for the Information Society
Efficiently develop high-quality, global,
consensus-based recommendations
(standards) in its core competency areas
on a market-driven and timely basis
Facilitate the interoperability of networks
and services
33
Draft ITU-T Strategic Plan for 2003-2006
Mission - continued




Be able to develop recommendations that
may have regulatory or policy implications
Be flexible and constantly look for ways to
improve
Give appropriate consideration to the
particular needs of developing countries
Cooperate and, where appropriate,
collaborate with others so as not to duplicate
effort
34
Draft ITU-T Strategic Plan for 2003-2006
Strategies/Processes

bottom-up mode of operating and production
of work (rather than top-down),

flexibility in responding to market demands,

ongoing review of the Strategic Plan,
proposing adjustments as needed,

through TSAG, monitoring the performance
of the Sector against identified milestones,
35
Draft ITU-T Strategic Plan for 2003-2006
Strategies/Processes - continued

development and strengthening of the linkage among
financial, strategic, and operational planning,

clear and transparent working methods and processes, to
encourage transparency, inclusiveness, and representation
of a broad range of participants and views,

an environment in which interested parties can work
together in partnership effectively and efficiently,

development and execution of an aggressive plan to
communicate the value of the ITU-T, stressing its global
recognition and credibility and the high quality of its
Recommendations, as well as its willingness to change,
36
Draft ITU-T Strategic Plan for 2003-2006
Strategies/Processes - continued

working with ITU-D with special attention to
telecommunication development in developing
countries, including supporting ITU-D’s efforts to
improve access to the Information Society in
developing countries,

offering an organization that is attractive to industry
entities as a place to do their standardization
development work, and

willingness to change.
37
Draft ITU-T Strategic Plan for 2003-2006
Relationship with other standardization bodies

foster awareness within ITU-T of the work done by other
bodies (such as SDOs, forums and consortia),

coordinate and cooperate with such groups in order to
reduce duplication, avoid inconsistencies, and assure that
ITU-T work provides added value,

continue to participate in appropriate coordinating bodies,

coordinate and cooperate with the Radiocommunication
and Telecommunication Development Sectors, and with
the General Secretariat and officials of the Union.
38
Possible Items for Consideration













IP-based networks and their interconnection with
telecommunication networks;
IP cablecom project;
establishment of GII;
IMT-2000 and mobility;
e-business and e-commerce;
reform of accounting rates and tariff studies;
MEDIACOM-2004 project and related multimedia activities;
security aspects of networks and services;
optical transport network;
access networks enhancements with xDSL techniques;
numbering and routing;
network performances and quality of services;
protocols for new services and intelligent networks.
39
GII: Center of Technology convergence
(based on Figure 5-1/Y.110)
TODAY
Computer
Information
Telecommunication
GII
Consumer
Entertainment
NEAR FUTURE
Computer
Information
Telecommunication
GII
Consumer
Entertainment
Computer
Information
21st Century
Telecommunication
GII
Consumer
Entertainment
40
Standards in the future
Areas
Regulated Areas
Intermediate Areas
Competitive Areas
Mandatory/Voluntary
Mandatory
Mandatory or Voluntary
Voluntary
Manager/Controller
States/Governments
-Frequency Allocation
-GEOS Orbits Assignment
Example
-Numbering/Addressing
Standards
-Charging
-Interconnection Rules
States/Government or
Private Sectors
-IMT-2000(Global Roaming)
-Call Back
-Global Services
e.g. IP Telephony Number
Private Sectors
-ATM
-ISDN
-SDH
-IN
-Multimedia
-Internet
-Other New Technologies
ITU Role
Predominant Player
over many years
One Player
among many
41
Conclusion

ITU Reform

New Standardization Requirements

Consensus standard (Regulators,
Operators, Industry, Users)

Membership requirements

End user requirements
42
Best selling ITU-T Recommendations of 2000
H.323 (09/99)
G.703
G.723.1
Q.931
G.711
X.690
G.704
G.723 Annex A V.90
E.164
X.680
H.323 (02/98)
G.692
H.263
G.729
G.826
G.957
H.225.0
G.729 Annex A V.34
43
International Telecommunication Union
The Telecommunication Standardization Sector
Fabio Bigi
ITU/TSB
Place des Nations
CH-1211 Geneva 20
Switzerland
Tel: +41 22 730 5515
Fax: +41 22 730 5853
e-mail: [email protected]