Transcript Title

www.gvf.org
WRC-07 Agenda Item 1.4:
The Before-and-Aftermath
David Hartshorn
Secretary General
Global VSAT Forum
IMT & The
Spectrum Hunt
Request
forPre-WRC
IMT Spectrum
www.gvf.org
Frequency bands (MHz) already identified for IMT 2000
or identified as “candidate bands” for “the future
development of IMT 2000” or “IMT Advanced”
0
1000
RR footnote 5.317A
410 450
430 470
960
806
1000
2100
RR footnote 5.384A
1710
RR footnote 5.388
1885
2025
2100
3200
RR footnote 5.384A
2200
2110
RR footnote 5.388
2400
2300
2500
2690
2700
2900
4200
3200
3400
4200
5000
4400
4990
Bands already identified for “IMT 2000”
Candidate bands for “IMT Advanced” (=“systems beyond IMT 2000”) or “future development of IMT 2000”
Wi-MAX Spectrum by Region
2005 - 2007 Spectrum Focus
www.gvf.org
A key issue is Europe,
especially the 2.5GHz Band
North
America
2.3, 2.5, 3.5,
5.8 GHz
2.5, 3.5,
5.8 GHz
2.3, 2.5, 3.5,
5.8 GHz
2.3, 2.5, 3.7,
5.8 GHz
2.3, 2.5, 3.3,
3.5, 5.8 GHz
3.5, 5.8 GHz
Caribbean
& Latin
America
Asia
Pacific
2.5, 3.5,
5.8 GHz
Middle
East &
Africa
Expect future WiMAX deployments
in spectrum ~ 700 MHz
Source: Wi-MAX Forum Presentation Delivered at 2007 GVF C-band Summit
IMT/Wi-MAX in C-band Downlinks
www.gvf.org
Is currently being introduced
country by country worldwide
Broadband Wireless Access
(BWA), WiMax, FWA, ….
3.4
3.5
3.6
Etx. C
Additional band
(FSS, feederlinks
for MSS, …)
3.7
Was recently considered at ITU
WRC-07
Future mobile phone networks
(IMT Advanced, 4G, ….)
3.8
3.9
4.0
Std. C
4.1
Band commonly used by FSS satellites
4.2
The Findings
www.gvf.org
• BWA or IMT in a part or all of the FSS C-band downlink will be
incompatible with general FSS reception in any part of C-band in the
same geographical area
• BWA or IMT in a part of C-band may be compatible with FSS
reception by a small number of earth stations if:
– Appropriate exclusion zones around each of the earth stations are
established
– User terminals are designed not to emit any signals when not in contact
with a base station
• Introduction of BWA or IMT by one country can block FSS reception
in another country
Why Is SatCom Important in C-band?
www.gvf.org
Exclusion Zones: A Viable Solution?
www.gvf.org
Example of calculated exclusion zone around an earth station to
counter interference from a single IMT base station in each cell
(From French study to ITU Working Party 8F
(Document WP 8F/868))
Impact of protection of earth stations in non-overlapping
frequency bands (e.g. BWA in 3.5 GHz and FSS in 3.7-4.2 GHz)
www.gvf.org
.
.
2 km exclusion
zones around
one earth
station at the
White House
and one earth
station at the
Pentagon
(protection
against microcell base
station used in
urban areas)
USE OF 3625 – 4200 MHz BY THE FSS IN BRAZIL
www.gvf.org
Brazilian
Contribution at June
CITEL Meeting
(OEA/Ser.L/XVII.4.2
CCP.II-RADIO/doc.
974/06):
 No Better Band
to Address Rain
Attenuation
 Exclusion Zones
Unworkable in Nations
with High-Density
Satcom Deployment
 Developing Countries
Can’t Afford Equipment
Changeout
Conclusion: 3625-4200 & 4500 – 4800 MHz Should Not Be Considered for IMT
www.gvf.org
C-Band Earth Stations in Africa (3400-4200 MHz)
(Incomplete Count from Intelsat)
Pre-WRC-07: The Global Campaign
www.gvf.org
• Established Consensus:
– Globally in Co-ordination with Sister Associations:
• Nationally
• Regionally
• Globally
– Out-Reach to Wi-Max Forum, WBU-ISOG, UN, NGOs, DoD
• Heightened Awareness:
–
–
–
–
Newsletters, regional arguementaires
Presence at Trade shows & Summits
Attendance at Critical ITU meetings
Worked with Regional Groups
• Tested Wi-Max and Satellite With DoD, SUIRG
At WRC-07: The On-Site Campaign
www.gvf.org
• Breakfasts, Lunches, Dinners, Briefings
• PR Campaign
• No-Change Website: www.no-change.info
• Dissemination of SUIRG-GVF Wi-Max Test
• On-Site Attendance, Coordination
• Dissemination of Futron Study
• Distribution of Argumentaires
The WRC-07 Outcome: Agenda Item 1.4
www.gvf.org
• No global identification for IMT, But…
• Individual countries can take a different position to the
international community and sign up to ‘country
footnotes’ that offer…
– In Region 1: 3 400 – 3 600 MHz is allocated to mobile services
and identified for IMT for some countries
– In Region 2: 3 400 – 3 500 MHz is allocated to mobile services
– In Region 3: 3 400 – 3 500 MHz is allocated to mobile services
and identified for IMT for some countries, as is 3 500 – 3 600
MHz
www.gvf.org
How C-band Will be ‘Protected’
www.gvf.org
• Any deployment of IMT services in the C band must fulfil
strict criteria laid out in the country footnote:
– Careful limits are placed on the power flux density allowed at the
border between countries that choose to allow the deployment of
IMT services and countries that follow the norm
– Existing rules governing sharing between services are reaffirmed
to make sure they are applied when necessary - to help protect
both existing and future satellite services
• There are no future agenda items to revisit this issue in
the years to come; case closed…
… With Some ‘Small’ Caveats
www.gvf.org
• WRC-07 Protections Focus on Cross-Border Protections
• National-Level Interference Still Major Issue
• At WRC-07 only 200 MHz allocated to IMT in C-Band
• IMT Sector Wants More…
•
•
•
•
•
Americas: Brazil at CITEL PCC.II, Mexico, Colombia, others
Arab Region: Jordan at ATRN
Europe: EC Dismisses Satellite Industry Recommendations
Asia: Australia, India, Mongolia, others
Africa: More Than 50 Wi-MAX Licenses Issued by 2007; Major
Interference Being Reported Across Continent
• GVF Has Now Launched The ‘Spectrum Security Initiative’