ITU-R - International Telecommunication Union/ITU Radiocommunication Sector
Scope
"Introduction International Mobile Telecommunications 2000 (IMT-2000) third generation mobile systems started service around the year 2000@ and provide access by means of one or more radio links to a wide range of telecommunications services supported by the fixed telecommunication networks (e.g. PSTN/ISDN/ Internet protocol (IP)) and to other services specific to mobile users. Since then@ IMT-2000 has been continually enhanced. The Radiocommunication Assembly 2007 adopted Resolution ITU-R 56 that resolves that the term ""IMT"" be the root name that encompasses both IMT-2000 and IMT-Advanced collectively. The following bands are identified for IMT in the Radio Regulations (RR): Frequency sharing studies and interference analyses involving IMT systems and other systems and services operating in bands identified for IMT may need to be undertaken within ITU-R. To perform the necessary sharing studies between IMT systems and systems in other services@ characteristics of the terrestrial component of IMT systems are needed. This Report provides the baseline characteristics of terrestrial IMT-2000 systems only for use in frequency sharing and interference analysis studies involving IMT-2000 systems and between IMT-2000 systems and other systems. Recommendations ITU-R M.1457@ ITU-R M.1580 and ITU-R M.1581 provide standardization information relating to IMT-2000 interfaces. Parameters for IMT-Advanced interfaces are not addressed in this Report. The characteristics of the IMT-2000 interfaces have been grouped by frequency bands: ?C 450-470 MHz@ 698-806 MHz@ 790-862 MHz@ 880-960 MHz. ?C 1 800 MHz@ 2 GHz@ 2.3 GHz@ 2.5 GHz. ?C 3 400-3 600 MHz. NOTE 1 ?C variations in the parameters may appear depending on the band that is considered@ among those listed in a group of frequency bands. Such variations are reflected in the respected tables."