WiMAX has approved a non-cellular telecommunication technology, as a big part of the IEEE 3G standards for the 2.6GHz frequency band by the International Telecommunications Union (ITU), so the same way, WiMAX can be considered as an earliest version of the next generation of mobile wireless systems. Under the same technology evolution of various different mobile systems all converging on an air interface based on OFDMA and on all-packet-switched core network. For example, on the radio point-of-view, there is widespread support for adopting OFDMA in the Long-Term Evolution (LTE) of 3G, and at a high level there are similarities between WiMAX and proposals for 3G LTE.