1. A Global View on Spectrum for IMT-2000
Draft
Fabio Leite, IMT-2000 Project Manager International Telecommunication Union (ITU)

2. IMT-2000 Terrestrial Radio Interfaces
Recommendation ITU-R M.1457: Detailed Specifications of the Radio Interfaces of IMT-2000
Paired spectrum
Unpaired spectrum
IMT-DS
W-CDMA (UTRAN
FDD)
Direct
Spread
IMT-MC
cdma2000
Multi
Carrier
IMT-TC
UTRAN TDD
TD-SCDMA
Time
Code
IMT-SC
UWC-136
(EDGE)
Single
Carrier
IMT-FT
DECT
Frequency
Time
IMT-2000 Recommendation ITU-R M.1457
Provides the Detailed Specifications of the Radio Interfaces of IMT-2000 both terrestrial and satellite components
Developed based on consideration of submitted radio interface technologies, the evaluation results, and consensus building
Minimizes the number of radio interfaces, maximizes commonality and supports the need to evolve from current generations
Incorporates best possible performance capabilities in various IMT-2000 operating environments
Utilizes output of activities outside of ITU to accommodate the aggressive schedules set by ITU and the needs of Administrations, operators and manufacturers
incorporates ITU-R developed material and uses references to externally developed specification material from proponent organizations, partnership projects and standards development organizations.
CDMA
TDMA
FDMA

3. Evolution Paths IS-41 CORE NETWORK GSM MAP CORE NETWORK 2G 2.5G 3G
cdmaOne IS-95B
cdma2000
1x EV-DO
cdmaOne
IS-95A
cdma2000 1X
cdma2000
1xEV-DV
TDMA
EDGE
W-CDMA
GSM
GPRS
GSM MAP CORE NETWORK 2G
2.5G 3G
It is the ITU goal that in IMT-2000 all radio access options should work with all network options, e.g., including cdma2000 on GSM MAP and W-CDMA on IS-41.

4. IMT-2000 Frequency Bands 1G + 2G 2G (Asia & Europe) + 3G
The figure shows the current use of the IMT-2000 spectrum identified at ITU WRC-2000.
The ITU is preparing globally harmonized frequency arrangements to facilitate IMT-2000 use of all these bands. 
1G + 2G
806
960 MHz
2G (Asia & Europe) + 3G
1710
1885 MHz
DECT, PHS + 2G + 3G
1885
2025
2110
2200 MHz
2500
2690 MHz

5. IMT-2000 Frequency Spectrum after WRC-2000
800
850
900
950
1000
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
2500
2550
2600
2650
2700
ITU Allocations
IMT 2000
IMT 2000
IMT 2000
MSS
IMT 2000
MSS
IMT 2000
Europe
GSM
GSM 1800
UMTS
DECT
MSS
UMTS
MSS
UMTS
China
Cellular
GSM
GSM 1800, PCS
IMT 2000
MSS
IMT 2000
MSS
Japan,
Korea (w/o PHS)
PDC
PDC
PHS
IMT 2000
MSS
IMT 2000
MSS
P C S
North America
Cellular
MSS
MSS A D B B E F C A D B B E F C
Reserve
Brasil, Venezuela
Cellular
Cell.
Cell.
IMT
2000
IMT
2000
ITU Radio Regulations: 750 MHz of spectrum identified for IMT-2000

6. Harmonized Introduction of IMT-2000 The International Regulatory Framework
Radio spectrum identification (RR ARTS5): total of 750 MHz ( MHz, MHz, / MHz, MHz) (RR No.s 5.317A, 5.384A, and 5.388, and Resolutions 212 (Rev.WRC‑97), 223 and 224 (WRC-2000))
ITU RES212 (Rev. WRC-97): “administrations which implement IMT-2000 should make the necessary frequencies available for system development; use those frequencies for IMT-2000; use relevant international technical characteristics, as identified by the Recommendations of the ITU-R and ITU-T.”
Licensing and/or initial implementation of IMT-2000: has commenced in many countries within the MHz, MHz, MHz, MHz, MHz, MHz and MHz bands.

7. IMT-2000 Spectrum Harmonization
ITU-R WP8F (WG-SPEC) Rec. M. 1036[-2] on frequency arrangements for implementation of IMT-2000 (bands identified at WRC-2000) (3Q2002)
ITU Workshop on IMT-2000 Spectrum Implementation (Geneva, ) Regulators & industry open discussions on IMT-2000 spectrum issues
WRC-03/06 Spectrum requirements for future developments of IMT-2000 & beyond systems

8. Guidelines for IMT-2000 Spectrum Harmonization
Frequency arrangements:
Global spectrum/solutions → interoperability
Harmonized to the maximum possible → global roaming and economies of scale
Flexible → consider existing or planned systems
Compatible with pre-IMT-2000 → enable evolution
Technology neutral → enable any IMT-2000 technology
Support traffic growth, use spectrum efficiently, consider differences between terrestrial & satellite components

9. Frequency Arrangements: IMT-2000 Band 1 710-2 200 MHz
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
Option B1
MS Tx
1920
1980
BS Tx
2170
2110
TDD
1880
2010
2025
Option B2
1710
MS Tx
BS Tx
1805
1880#
1785#
# The upper limits in some
Countries are 1755 and 1850 MHz
Option B3
1910
1990
1930
1850
BS Tx
MS Tx
TDD
Option B4
1920
1980
1880
2010
2025
2170
2110
BS Tx
MS Tx
TDD
1805
1785
1710
Option B5
MS Tx
BS Tx
[1850]
[1755]
1910
1990
1930
TDD
[2160]
2110
[1805]
1710
Option B6
BS Tx
MS Tx
1910
1990
1930
1850
TDD
1770
1710
2170
2110
B1, B2 and B3: already in use by public mobile cellular systems including IMT-2000; B1 and B2: fully complementary; B3: partly overlaps with B1 and B2.
B4: enables to optimize spectrum use for paired IMT-2000 operation for countries having implemented B1.
B1: can be combined with B2 for countries having implemented B3.
·   B5: implements B2 to harmonize parts of the extension bands globally; enables to maximize spectrum use for paired IMT-2000 operation in countries where B3 is implemented and where the whole band  MHz is available.
B6: enables to maximize spectrum use for IMT-2000 in countries where B3 is implemented and where the band MHz is not available in the initial phase of deployment of IMT-2000 in this frequency band.