mib

1
mib
ZTE
Alcatel-Lucent
Siemens
Ericsson
Samsung
Fujitsu
Qualcomm
Huawei
Panasonic
Motorola
Nortel
NEC
Nokia
2
Summary of ITU-R WP 8F results on IMT.SHARING
CANDI

• Francisco Giacomini Soares
• Qualcomm

3
Outline

• Background
• WRC-03 Resolution 228
• Candidate Bands
• Bands below 1 GHz
• 410-430 MHz and 450-470 MHz
• 470-806/862 MHz
• Band 2300-2400 MHz
• Band 2700-2900 MHz
• Bands 3400-4200 MHz and 4400-4900 MHz

4
Background

• WRC-07 has IMT on its agenda
• Resolution 228 (Rev. WRC-03) resolves
• to include sharing and compatibility studies with
  services already having allocations in potential
  spectrum
  
• The predicted total spectrum bandwidth
  requirement for both RATG1 and RATG2
  (pre-IMT-2000, IMT-2000 and IMT-Advanced,
  respectively) for the year 2020 is calculated in
  Report ITU-R M.2078 to be 1280 MHz (including
  spectrum already being used or planned to be used
  for RATG1)
• The calculations indicate that the spectrum
  bandwidth requirements ranging from 1280 MHz to
  1720 MHz (including spectrum already being used
  or planned to be used for RATG1) represent a
  lower and a higher market setting, as obtained
  from IMT.MARKET data.
• It is important to note that this lower figure of
  1280 MHz is higher than the frequencies for some
  countries.
  
• In addition, there are some countries where the
  amount of spectrum required is larger than the
  higher value of 1720 MHz.
  

5
Background

• The following charts describe the results of the
  sharing studies performed in WP 8F to date
  

410 430 and 450 470 MHz 470 806/862 MHz
2.3 2.4 GHz 2.7 2.9 GHz 3.4 4.2 and 4.4
4.9 GHz

All these bands are going forward to WRC-07 for
consideration
6
Bands below 1 GHz

• 410 - 430 MHz
• No sharing studies are being conducted in this
  band.
  
• 450 - 470 MHz
• Broadcasting Services Sharing studies have been
  initiated and being progressed with WP8F with
  other concerned SGsand WPs to investigate sharing
  between IMT-2000 systems beyond and Digital
  Video Broadcasting applications in the band
  470-862 MHz.
• Preliminary results indicate that sharing
  between IMT (450-470 MHz) and broadcasting
  services (470-480 MHz), i.e. in adjacent bands,
  is feasible with the use of mitigation
  techniques.
• Radiolocation Service Sharing studies between
  the radiolocation service in the 440-450 MHz and
  IMT systems in the 450-470 MHz are being
  progressed in WP8F in collaboration with the
  advice of WP8B.
• Preliminary results indicate that sharing
  between Radiolocation services and IMT systems in
  adjacent bands is feasible only with mitigation
  techniques. Mitigation in the amounts of dBs
  needed to enable sharing between radar and IMT
  systems.

7
Bands below 1 GHz

• 450 - 470 MHz (cont.)
• Fixed, Mobile/Satellite Services Sharing studies
  between in the fixed service and non-IMT systems
  in the mobile service and IMT systems in the
  450-470 MHz are being progressed in WP8F.
• Preliminary results indicate that co-channel
  sharing between fixed and non-IMT Mobile service
  systems and IMT systems is problematic in most
  instances. Coordination between fixed service
  systems and non-IMT mobile systems and IMT
  systems is required to enable sharing between the
  two types of systems.

8
Bands below 1 GHz

• 470 - 806/862 MHz
• The switchover from analog to digital
  broadcasting, which provides more sprectrum
  efficiency, may make it possible to free up
  spectrum after the transition period. This
  spectrum could be released for mobile services
  including IMT.
• Sharing studies between IMT and broadcast
  service, including both analog and digital TV,
  have been developed with regard to co-channel and
  adjacent interferences. These studies, however,
  are far from being completed.
• Some countries have shown widely disparate
  timetables for conversion from national analog to
  digital TV, while others have already made a
  portion of this band available for mobile
  services.

9
Band 2300-2400 MHz

• No sharing studies are being conducted in this
  band.

10
Band 2700-2900 MHz

• Sharing studies are currently being progressed
  within ITU-R WP8F and with other concerned Study
  Groups and Working Parties to investigate
  co-existence between IMT-2000 and systems beyond
  IMT-2000 and Aeronautical Radionavigation Service
  (ARNS) and meteorological radars in the band
  2700-2900 MHz.
• Preliminary results of the interference
  simulations between incumbent radars and IMT-2000
  systems show that interference will occur to ARNS
  and meteorological radars on a co-channel basis.
• Separation distances of greater than 500, 200 or
  100 km between radar and the nearest IMT network
  cell (macro, micro and pico) to protect radar
  operation is necessary.
• Analysis of interference from radars to IMT
  networks shows that interference will be present
  even at distances of hundreds of kilometers.
  However, this may not be seriously affect QoS due
  to radars pulse characteristics and error
  correcting features of the IMT devices.

11
Bands 3400-4200 MHz and 4400-4900 MHz

• 3400 - 3700 MHz
• Multiple sharing studies have been conducted for
  different scenarios and assumptions. Despite
  these differences, some similar results have been
  obtained.
• Combined co-channel and adjacent channel
  analysis conducted for sharing between Airborne
  radar and Shipborne radar, and IMT systems
  requires a distance of about 360 km and 45 km,
  respectively.
• Using non-overlapping adjacent channel analysis,
  the required separation distance is approximately
  0 km for Airborne radar and less than 1 km,
  depending on radar and antenna type, for
  Shipborne radar.
• Mitigation techniques including DFS function may
  be required to achieve an allowable interference
  level.
  

12
Bands 3400-4200 MHz and 4400-4900 MHz

• 3400 - 4200 and 4500 - 4800 MHz
• Sharing studies have been performed related to
  the possibility of IMT-2000 and beyond systems to
  be deployed in the band utilized by the Fixed
  Satellite Service (FSS) in the bands 3400 - 4200
  MHz and 4500 - 4800 MHz. To provide protection of
  the FSS receive earth stations, some physical
  separation to the stations of the mobile
  terrestrial network is required.
• Sharing studies related to FSS and IMT-200 and
  beyond in above bands show that to protect FSS
  receive earth stations some physical separation
  to the stations of the mobile terrestrial network
  is required depending on network parameters and
  deployment.
• The magnitudes of these distances are being
  studied considering both short term and long term
  interference criteria requirements. Preliminary
  results show that ubiquitously deployed
  IMT-Advanced systems can not share in the same
  geographical area with FSS, when FSS is deployed
  in a ubiquitous manner and/or with no individual
• licensing of earth stations, since no minimum
  separation is
  
• guaranteed.

13
Final Comments

• Administrations should look at the results of
  the sharing studies after Kyoto meeting and
  consider together with the needs for each
  particular country or region in order to develop
  their views to support the necessary bands
  identification at the WRC-07.