What is the History of 4G?

History:

The first generation of mobile communications started with the Advanced Mobile Phone Systems (AMPS), which was an analogue system. AMPS can be thought of as 1G. From there, we progressed to GSM and CDMA-one (pretty much regarded as 2G) and then to UMTS and EV-DO, which are 3G technologies. The latest technologies that are regarded as candidates for 4G are LTE (from the 3GPP group) and 802.16m (from the IEEE). In the case of 802.16m, the candidate for 4G is also known as WirelessMAN Advanced, or WiMAX2. LTE progresses through versions known as releases. The latest release that qualifies as being 4G is release 10, often called LTE-Advanced.