Activities of theActivities of theRadiocommunication SectorRadiocommunication Sector

Yvon HenriYvon HenriHead of Space Services Department

yvon.henri@itu.int

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

BroadcastingTelecom

Computing

ITU 2003-2007 Strategic PlanGoals

• 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 PlanGoals

• 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)

• 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 onIntergovernmental Conference on Emergency TelecommunicationsEmergency Telecommunications

Helsinki, 1998 (ICET-98)Helsinki, 1998 (ICET-98)

• Adopted Convention on the Provision of Convention on the Provision of Telecommunication Resources for Disaster Telecommunication Resources for Disaster Mitigation and Relief OperationsMitigation 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 national plan for disaster mitigation and relief operationsmitigation 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 ITU-D Handbook on Disaster on Disaster

CommunicationsCommunications

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 (WRC-2000), 605 (WRC-2000) and 606 (WRC-2000)

Frequency Spectrum for the RNSS - Regulatory situationRegulatory situation

GLONASSGPS

1240

GPS GLONASS

1563 1587 1591 1610 MHz1559

1260 1300 MHz

E6

12151164 1188

E5BL5

C1

5030 MHz5000 5010

L2 G2

G1L1

UpLink

ARNSS - For Safety-of-Life Services

For Safety-of-Life Services

DownLink

66 satellite filings from 12 ADM66 satellite filings from 12 ADM

E5A

RR No. 5.443B (WRC-03)

RNSS-MLS Compatibility5000-5010MHz => 5030-5150MHz

Res. 609 (WRC-03)RNSS-ARNS Compatibility

(960)1164 - 1215 MHz

Res. 608 (WRC-03)RNSS-RLS Compatibility

1215 - 1300MHz

Current RNSS allocation

ARNSS protectionEPFD -121,5 dBW/m² in 10 MHz for all sats in view

RLS/ EESSRR No. 5.329 (WRC-03)

WPRATC Radar

Res. 741 (WRC-03)RNSS-RAS Compatibility

5010-5030MHz => 4990-5000MHz

Res. 610 (WRC-03)Coordination and bilateral

resolution of technical compatibility issues for RNSS

networks

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:Issue: need for assessment and systematic observations of forest cover and rate of forest degradation in tropical and temperate regions

• Decisions of WRC-03: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 RadarSynthetic 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 IMAGESA SAR can therefore produce IMAGES

• At a wavelength of 70cm (430 MHz), a SAR can penetrate SAR can penetrate the earth’s surface to detect moisture around tree rootsthe earth’s surface to detect moisture around tree roots

• It can therefore be used to study the health of tropical It can therefore be used to study the health of tropical forestsforests

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 theRadiocommunication Sector

Questions ?Questions ?

Yvon HenriYvon Henriyvon.henri@itu.int