4G Development and Spectrum Issues

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4G Development and Spectrum Issues
ITU-T Workshop on Bridging the Standardization
Gapand Interactive Training Session (Nadi,
Fiji, 4 6 July 2011 )

• Kyu-Jin WEE ,Ph.D.
• Vice-Chairman, ITU-R WP 5D

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Contents

• What is 4G?
• Review of ITU activities on IMT
• What is 4G?
• IMT Standards in ITU-R
• Spectrum Issues
• IMT Identifications at WRCs
• Main principles of spectrum use for IMT
• Interference cases
• Channel arrangements in 700 MHz
• Spectrum Harmonization among APT

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• What is 4G?

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Start to Study on IMT(FPLMTS)
Review of ITU activities on IMT
First Release of IMT specification M.1457
ITU-R Report IMT.UPDATE
Regional Workshop for IMT.UPDATE
1985
1992
1999
2007
2000
2003
2011
2015/16
2012
IMT Spectrum (WARC-92)
IMT Spectrum (WRC-2000)
IMT Spectrum (WRC-2007)
Broadband/IMT Spectrum (WRC-2015/16)
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Vision for IMT
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Capacity Demands

• Traffic users x volume per user

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What is 4G?
Images captured on the web
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Evolution of IMT Technologies
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IMT Standards in ITU-R

• Standardization of IMT-Advanced systems
• Developing Recommendation ITU-R IMT.RSPEC (to
  be approved in RA-12, 2012)
• LTE-Advanced (by the 3GPP)
• WirelessMAN-Advanced (802.16m by the IEEE)
• Forecast of future IMT services
• Developing Report ITU-R IMT.UPDATE (to be
  approved in 2011)
• Review of previous market forecast
• New trends in mobile broadband
• Broadband plans available including mobile
  broadband/IMT
• Spectrum Harmonization
• Revising Recommendation ITU-R M.1036 (to be
  approved in 2011)
• Harmonized channel arrangements

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• Spectrum Issues

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IMT identifications at WRCs

• No distinction between IMT-2000 IMT-Advanced in
  the use of frequencies
• IMT identification at WRC-07
• in the band 698-790 MHz in Bangladesh, China,
  Korea, India, Japan, New Zealand, Singapore,
  Papua New Guinea, and Philippines (RR No. 5.313A)
• in the band 3400-3500 MHz in Bangladesh, China,
  Korea, India, Japan, New Zealand, Singapore,
  Pakistan, Iran and French overseas communities in
  R3 (RR Nos. 5.432A and 5.432B)

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IMT bands in some countries
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Main Principles of spectrum use for IMT

• to minimize the impact on other systems and
  services within, and adjacent to, the bands
  identified for IMT
• to facilitate worldwide roaming of IMT terminals
• to optimize the efficiency of spectrum
  utilization within IMT bands
• minimized guardbands for IMT systems to avoid
  wasting spectrum
• sufficient frequency separation between
  transmitter and receiver frequencies must exist
  in a frequency division duplex system
• to minimize terminal costs, size and power
  consumption, etc.
• harmonized frequency arrangements to reduce the
  overall cost of IMT networks and terminals by
  providing economies of scale

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Interference case (1)

• Opposite directions of Tx and Rx in the same
  frequency band may cause interference at
  cross-border area

Administration 1
Neighboring Administration 2
same IMT systems in the same frequency band
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Interference case (2)

• Interference example in Korea
• Introduction of new system in the adjacent band
• Sufficient guard band is required to mitigate
  interference

• Special out-of-band emission limits are regulated
  for mobile terminal of Operator A and BS of
  Operator B

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Channel Arrangements in 700 MHz (1)

• By APT Wireless Group (AWG)

• Option 1
• (FDD Conventional)

Center gap
806
694 698
45MHz
806
Option 2 (TDD)
2-4MHz
4-6MHz
BS and MS
PPDR
DTV
806
694 698
100MHz
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Channel Arrangements in 700 MHz (2)

• By European Union

• By the US

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Spectrum Harmonization among APT

• Plan of action from Bali Statement by Asia
  Pacific Ministerial Meeting on Strengthening
  Regional Collaboration towards a Broadband
  Economy in the Asia pacific
• Policy objective C Facilitate effective
  convergence of services
• Collaborate regionally possible to harmonize the
  RF bands allocated for broadband ICT application
  and services
• Most of spectrum plans led by EU countries and
  the Americas
• APT countries adopted them and not harmonized
  among APT
• AWG developed Channel arrangement in 700 MHz band
• First case of harmonized spectrum plan for
  Asia-Pacific countries
• Encouraged to keep collaborating for spectrum
  harmonization taking into account Bali statement

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• Thank You!
• kjwee_at_kcc.go.kr