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3G Frequencies
According to "WARC-92 frequencies for IMT-2000" resolution:
"The bands 1885-2025 MHz and 2110-2200 MHz are intended
for use, on a worldwide basis, by administrations wishing to implement
International Mobile Telecommunications-2000 (IMT-2000). Such use does
not preclude the use of these bands by other services to which they are
allocated."
Here is the summary of UMTS frequencies:
1920-1980 and 2110-2170 MHz Frequency Division Duplex (FDD, W-CDMA) Paired uplink and downlink, channel spacing is 5 MHz and raster is 200 kHz. An Operator needs 3 - 4 channels (2x15 MHz or 2x20 MHz) to be able to build a high-speed, high-capacity network.
1900-1920 and 2010-2025 MHz Time Division Duplex (TDD, TD/CDMA) Unpaired, channel spacing is 5 MHz and raster is 200 kHz. Tx and Rx are not separated in frequency.
1980-2010 and 2170-2200 MHz Satellite uplink and downlink.
Carrier frequencies are designated by a UTRA Absolute Radio Frequency Channel Number (UARFCN). The general formula relating frequency to UARFN is:
UARFCN = 5 * (frequency in MHz)
WARC-92 IMT-2000 Frequencies
WRC-2000 in Istanbul
Identified the bands 1710 - 1885 and 2500 - 2690 MHz for IMT-2000
Identified those parts of the band 806 - 960 MHz which are allocated to the mobile service on a primary basis
Admitted that High Altitude Platform Stations (HAPS) may use
the WARC-92 frequency bands for terrestrial IMT-2000 on
restrictive conditions
Decided that the frequency bands 1525 - 1544, 1545 - 1559,
1610 - 1626.5, 1626.5 - 1645.5, 1646.5 - 1660.5 and 2483.5 -
2500 MHz may be used for the satellite component of IMT-2000, as
well as the bands 2500 - 2520 MHz and 2670- 2690 MHz,
depending on market developments
Decided that "the bands, or portions of the bands, 1710 - 1885 MHz and
2500 - 2690 MHz, are identified for use by administrations wishing to implement
International Mobile Telecommunications-2000 (IMT-2000). This identification does not preclude the use of these bands by any application of the services to which they are allocated and does
not establish priority in the Radio Regulations".
WRC-2000 IMT-2000 Frequencies
From the TS 25.101 Specification:
UTRA FDD frequency bands
TX-RX frequency separation
UARFCN definition
UARFCN definition (Band II additional channels)
UTRA Absolute Radio Frequency Channel Number
USA spectrum allocation by Unstrung (10/09/04)
India spectrum allocation by 3G Newsroom (28/09/04)
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