Fabio Leite, IMT-2000 Project ManagerInternational Telecommunication Union (ITU)

fabio.leite@itu.int

A Global View on Spectrum

for IMT-2000

IMT-2000 Terrestrial Radio Interfaces

CDMA TDMA FDMA

Paired spectrum Unpaired spectrum

IMT-DSW-CDMA (UTRAN

FDD)

DirectSpread

IMT-MCcdma2000

MultiCarrier

IMT-TCUTRAN TDDTD-SCDMA

TimeCode

IMT-SCUWC-136(EDGE)

SingleCarrier

IMT-FTDECT

FrequencyTime

Recommendation ITU-R M.1457: Detailed Specifications of the Radio Interfaces of IMT-2000

GSM

TDMA

GPRS

cdma2000 1X

cdma20001x EV-DO

EDGE W-CDMA

cdma20001xEV-DV

cdmaOneIS-95A

cdmaOne IS-95B

GSM MAP CORE NETWORK

IS-41 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.

Evolution Paths

806 960 MHz

1710

1885 2200 MHz

2500 2690 MHz

2025 2110

1G + 2G

2G (Asia & Europe) + 3G

DECT, PHS + 2G + 3G

1885 MHz

IMT-2000 Frequency Bands

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. 

1850 1900 1950 2000 2050 2100 2150 2200 2250

Reserve

UMTSGSM 1800 DECT MSS

MSSIMT 2000PHS MSSIMT 2000

IMT 2000

MSSIMT 2000IMT 2000

IMT 2000

MSSUMTS

MSS

A D B E F A B C MSS

MSS MSS

GSM 1800, PCS

D FEB BC

ITU Allocations

Europe

China

Japan,Korea (w/o PHS)

North America

1700 1750 1800950 1000800 850 900

IMT 2000IMT 2000

2500 2550 2600 2650 2700

IMT 2000

UMTS

GSM

Cellular

PDC

Cellular

P C S

MSS

GSM

PDC

Cellular Cell. Cell. IMT2000

IMT2000Brasil, Venezuela

IMT-2000 Frequency IMT-2000 Frequency Spectrum after WRC-2000Spectrum after WRC-2000

ITU Radio Regulations: 750 MHz of spectrum identified for IMT-2000

Harmonized Introduction of IMT-2000The International Regulatory Framework

• Radio spectrum identification (RR ARTS5): total of 750 MHz (806-960 MHz, 1710-1885 MHz, 1885-2025/2110-2200 MHz, 2500-2690 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 806-960 MHz, 1750-1780 MHz, 1840-1870 MHz, 1850-1990 MHz, 1900-1980 MHz, 2010-2025 MHz and 2110-2170 MHz bands.

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, 19-20.10.2000)Regulators & industry open discussions on IMT-2000 spectrum issues

• WRC-03/06Spectrum requirements for future developments of IMT-2000 & beyond systems

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

Frequency Arrangements: IMT-2000 Band 1 710-2 200 MHz

1750 1800 1850 1900 1950 2000 2050 2100 2150 2200MHz

Option B5

Option B1

Option B2

Option B3

Option B4

Option B6

1700

MS Tx1920 1980

BS Tx21702110

TDD TDD

1880 2010 2025

1710MS Tx BS Tx

1805 1880#1785#

# The upper limits in some Countries are 1755 and 1850 MHz

1910 199019301850BS TxMS Tx TDD

1920 19801880 2010 2025 21702110BS TxMS TxTDD TDD

MS Tx BS Tx180517851710

BS TxMS Tx1910 199019301850

TDDMS Tx17701710

BS Tx21702110

MS Tx BS Tx[1850][1755]

BS TxMS Tx1910 19901930

TDDMS Tx BS Tx[2160]2110[1805]1710

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 1 710-1 850 MHz is available.B6: enables to maximize spectrum use for IMT-2000 in countries where B3 is implemented and where the band 1 770-1 850 MHz is not available in the initial phase of deployment of IMT-2000 in this frequency band.