IMT-Advanced (International Mobile Telecommunications Advanced) is the "real" 4G, whereas current wireless technologies such as LTE and WiMax 802.16e are pre-4G, or proto-4G, technologies.
The two technologies set to make the 4G cut are LTE Advanced, proposed by the 3rd Generation Partnership Project (3GPP) , and the Institute of Electrical and Electronics Engineers Inc. (IEEE) 's 802.16m (also known as WiMax 2.0), both of which have been under consideration since October 2009.
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