I 2006 anslog Den Internationale Telekommunikationsunion ("ITU"), at de fremtidige krav til frekvensbåndbredde til udvikling af det internationale mobile telekommunikationssystem 2000 (IMT-2000) og IMT-avancerede systemer (dvs. 3G og 4G mobile kommunikationer) ville være mellem 1280 og 1720 MHz i 2020 for den kommercielle mobilindustri for hver ITU-region, herunder Europa.
In 2006, the International Telecommunication Union (ITU) estimated that the future spectrum bandwidth requirements for the development of International Mobile Telecommunications-2000 (IMT-2000) and IMT-advanced systems (i.e. 3G and 4G mobile communications) would be between 1280 and 1720 MHz in 2020 for the commercial mobile industry for each ITU region including Europe.