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What is 4G or IMT Advanced?

Source: 3G Americas

4G” is the term used to refer to the forthcoming "Fourth Generation" of mobile wireless services that is currently being defined by the International Telecommunication Union (ITU). Its Radiocommunication Sector (ITU-R) is in the process of establishing an agreed and globally accepted definition of 4G wireless systems using the name IMT-Advanced. Current 3G systems were established through ITU’s previous project on International Mobile Telecommunications 2000 (IMT-2000).

As background for this project, ITU published a document, “Recommendation ITU-R M.1645: Framework and overall objectives of the future development of IMT-2000 and systems beyond IMT-2000.”

The IMT-Advanced project schedule shows the requirements and evaluation criteria published in 2008 with submissions to occur through 2009. In Release 10, 3GPP will address the IMT-Advanced requirements in a version of LTE, called LTE-Advanced, for which specifications could become available in 2011. WiMAX will address the IMT-Advanced requirements in a version called Mobile WiMAX 2.0, to be specified in IEEE 802.16m. Such a 4G family, in adherence to the principles defined for acceptance into this ITU process, is globally recognized to be one that can grow to include all aspects of a marketplace arriving beyond 2010, thus complementing and building upon an expanding and maturing 3G business



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