Transcript Introducing the ITU - United Nations Office at Vienna

Activities of the
Radiocommunication Sector
Yvon Henri
Head of Space Services Department
[email protected]
Radiocommunication Bureau - ITU
The ITU in brief
• UN specialized agency, concerned with the
development of telecommunication
networks and services worldwide
• 137 years old
• 189 Member States, 650 Sector Members
• 750 staff / 71 nationalities
• Website: http://www.itu.int
Global Harmonization
Technological Convergence
Broadcasting
Telecom
Computing
ITU 2003-2007 Strategic Plan
Goals
• Maintain and extend international cooperation
among all Member States and with appropriate
regional organizations for the improvement and
rational use of telecommunications of all kinds,
taking the leading role in the United Nations
system initiatives on information and
communication technologies
ITU 2003-2007 Strategic Plan
Goals
• Assist in bridging the international digital
divide in information and communication
technologies, facilitating development of
fully interconnected and interoperable
networks and services to promote global
connectivity, by taking a leading role in the
preparations for, and taking due account of
the relevant results of, the World Summit
on the Information Society (WSIS)
Structure of ITU
• General Secretariat (SG)
• Radiocommunication Sector (ITU-R)
• Telecommunication Standardization Sector
(ITU-T)
• Telecommunication Development Sector
(ITU-D)
ITU Structure
ITU Radiocommunication Sector
(ITU-R)
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World Radiocommunication Conferences
Radiocommunication Assemblies
Study Groups
Radio Regulations Board (RRB)
Radiocommunication Advisory Group (RAG)
Bureau (BR) - Director: V. Timofeev, Russia
Space services department
Terrestrial services department
Publications
Mission
“To ensure rational, equitable, efficient and
economical use of the radio frequency
spectrum by all radiocommunication
services - including those using the
geostationary satellite orbit or other
satellite orbits - and to carry out studies on
radiocommunication matters”
WRC-03: Figures and facts
• 48 agenda items
• 2334 registered participants (without the
Secretariat) from 145 Member States
• Over 2500 individual proposals
• 8 committees, over 60 working groups
Agenda Item 1.3:
Harmonized bands for public protection
• to consider identification of globally/regionally
harmonized bands, to the extent practicable, for
the implementation of future advanced solutions
to meet the needs of public protection agencies,
including those dealing with emergency situations
and disaster relief, and to make regulatory
provisions, as necessary, taking into account
RES 645 (WRC-2000);
Agenda Item 1.3:
Harmonized bands for public protection
• RES 645 (WRC-2000): Global harmonization of
spectrum for public protection and disaster relief
– Benefits of globally harmonized bands (increased potential for
cooperation between countries, easy deployment, decreased costs)
– ITU-R to study identification of appropriate frequency bands to
implement future solutions for public protection agencies and
organizations
– ITU-R to study regulatory provisions necessary to identify such bands
– ITU-R to study issues concerning technical and operational matters
for cross-border circulation of equipment
Agenda Item 1.3:
Harmonized bands for public protection
• Resolution 646 (WRC-03):
Public protection and disaster relief
– Difficulties to identify a single band; several regional bands:
• Region 1: 380 – 470 MHz; Region 2: 746 – 806 MHz, 806 –
869 MHz, 4940 – 4990 MHz; Region 3: 406.1 – 430 MHz,
440 – 470 MHz, 806 – 824/850 – 869 MHz, 4940 – 4990
MHz, 5850 – 5925 MHz
– Administrations are urged to use regionally harmonized bands for
PPDR, taking into account national and regional requirements;
special attention to emerging technologies
– Complementary support: use of amateur networks
– ITU-R to study issues concerning technical and operational matters
Intergovernmental Conference on
Emergency Telecommunications
Helsinki, 1998 (ICET-98)
• Adopted Convention on the Provision of
Telecommunication Resources for Disaster
Mitigation and Relief Operations
• Provides framework for rapid deployment
and effective use of telecommunications in
disasters
• An intergovernmental pact with provisions
for non-governmental organisations
Need for a national plan
• Countries need a national plan for disaster
mitigation and relief operations
• Emergency telecommunications and
restoration of facilities should be featured
• All radio services, including the Amateur
Services, should be included in the plan
ITU-D Handbook
on Disaster
Communications
Joint effort by
UN/OCHA, IARU and
ITU-D
Includes policy,
operations, technical
sections
Agenda item 1.15: RNSS issues
• Review the results of studies concerning the
radionavigation-satellite service in
accordance with Resolutions 604 (WRC2000), 605 (WRC-2000) and 606 (WRC2000)
Frequency Spectrum for the RNSS - Regulatory situation
Res. 608 (WRC-03)
RNSS-RLS Compatibility
1215 - 1300MHz
Res. 609 (WRC-03)
RNSS-ARNS Compatibility
(960)1164 - 1215 MHz
ARNSS - For Safety-of-Life Services
ATC Radar
E5A
L5
E5B
L2
66 satellite filings from 12 ADM
1164
E6
G2
GPS
1215
1188
GLONASS
1240
1300 MHz
RLS/ EESS
RR No. 5.329 (WRC-03)
1260
ARNSS protection
EPFD -121,5 dBW/m² in 10 MHz for all sats in view
Current RNSS allocation
For Safety-of-Life Services
Res. 610 (WRC-03)
Coordination and bilateral
resolution of technical
compatibility issues for RNSS
networks
1559 1563
WPR
L1
G1
GPS
GLONASS
1587 1591
RR No. 5.443B (WRC-03)
RNSS-MLS Compatibility
5000-5010MHz => 5030-5150MHz
Res. 741 (WRC-03)
RNSS-RAS Compatibility
5010-5030MHz => 4990-5000MHz
C1
1610 MHz
UpLink
5000
DownLink
5010
5030 MHz
Agenda item 1.38: EESS(active) in 420–470 MHz
• to consider provision of up to 6 MHz of frequency
spectrum to the Earth exploration-satellite service (active)
in the frequency band 420-470 MHz, in accordance with
Resolution 727 (Rev.WRC-2000)
• Issue: need for assessment and systematic observations of
forest cover and rate of forest degradation in tropical and
temperate regions
• Decisions of WRC-03:
– Addition of EESS (active), on a secondary basis,
in 432 – 438 MHz band
– SUP Resolution 727
Agenda item 1.38: EESS (active) in 420 – 470 MHz
What is a SAR ? (1)
• Most Radars send out a short pulse and determine range of
a target by the time taken for an echo to return
• Angle to the target is determined by the pointing direction
of the high gain receiving antenna
• A SAR - Synthetic Aperture Radar - uses the motion of a
satellite to “synthesize”an antenna
• It uses a crystal controlled signal which is coherent from
pulse to pulse
• Using signal processing it combines several echos to
produce the effect of a very long antenna along the
direction of travel
Agenda item 1.38: EESS (active) in 420 – 470 MHz
What is a SAR ? (2)
• Most SARs also sweep the signal over a wide frequency
range during a relatively long pulse
• On reception, again using signal processing the pulse is
compressed to become very short, allowing very accurate
range determination
• A SAR can therefore produce IMAGES
• At a wavelength of 70cm (430 MHz), a SAR can penetrate
the earth’s surface to detect moisture around tree roots
• It can therefore be used to study the health of tropical
forests
Agenda for WRC-07
Issues related to space science services
• AI 1.2: allocations and related regulatory issues for EESS
(passive), SRS (passive) and Meteo-SAT in 18.1 – 18.4
GHz, in 10.6 – 10.68 GHz and 36 – 37 GHz
• AI 1.20: protection of EESS (passive) (bands 1400 – 1427
MHz, 23.6 – 24 GHz, 31.3 – 31.5 GHz, 50.2 – 50.4 GHz)
from unwanted emissions of active services
Activities of the
Radiocommunication Sector
Questions ?
Yvon Henri
[email protected]