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Home : Newsroom : WRC-07

ITU-R Radiocommunications Assembly Expands IMT-2000 3G Radio Interface Family with OFDMA technology;

Establishes IMT-Advanced as the name for 4G

Geneva, 19 October 2007 — After an intensive week at the Radiocommunication Assembly (RA-07), 15-19 October, consensus was reached to expand the IMT-2000 3G Radio Interface Family with OFDMA technology and to establish IMT-Advanced as the name for 4G.

Responding to the demands of ITU Members to address the continuously growing wireless marketplace, the ITU-R in its Radiocommunications Assembly 2007 approved the seventh revision of Recommendation ITU-R M.1457 adding OFDMA based technologies to the IMT-2000 portfolio.

In addition to adding OFDMA transmission capability to certain existing IMT-2000 radio interfaces, the ITU-R has grown the family of IMT-2000 third generation to six terrestrial radio interfaces by the addition of the OFDMA TDD WMAN technology as a specific subset of IEEE 802.16e technology (WiMAX). The OFDMA TDD WMAN is a TDD technology focused on application in the 2500-2690 MHz IMT-2000 band.

Further actions in the RA-07 included agreeing on IMT-Advanced as the name of the future generation of radio technologies beyond IMT-2000. As part of the naming agreements, the term IMT-2000 remains for describing third generation. Together IMT-2000 and IMT-Advanced are collectively identified by the term IMT.

The RA-07 further established, in conjunction with the IMT-Advanced work, the guiding principles that underpin the process for specifying the radio interfaces for IMT-Advanced.

The International Telecommunication Union (ITU) is the internationally recognized organization chartered to produce an official definition of the next generation of wireless technologies. During 2008 and 2009, there will be an open call for candidates for IMT-Advanced to be submitted to the ITU, as well as the start of assessment activities of candidate technologies and systems. Services provided using IMT-Advanced could be commercially available as early as 2011 subject to market demand.

  • OFDMA - Orthogonal Frequency Division Multiple Access

  • TDD - Time Division Duplex

  • WMAN - Wireless Metropolitan Area Network

  • WiMAX - Worldwide Interoperability for Microwave Access

  • The ITU Radiocommunication Sector (ITU-R) plays a vital role in the management of the radio-frequency spectrum and satellite orbits, finite natural resources which are increasingly in demand from a large number of services such as fixed, mobile, broadcasting, amateur, space research, meteorology, global positioning systems, environmental monitoring and, last but not least, those communication services that ensure safety of life on land, at sea and in the skies.

    ITU is the leading United Nations agency for information and communication technologies. As the global focal point for governments and the private sector, ITU's role in helping the world communicate spans 3 core sectors: radiocommunication, standardization and development. ITU also organizes TELECOM events and was the lead organizing agency of the World Summit on the Information Society.

    ITU is based in Geneva, Switzerland, and its membership includes 191 Member States and more than 700 Sector Members and Associates


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    Updated : 2007-11-02