LTE and WiMAX are two different technologies to achieve 4G defined speeds[1]. Whereas 5G is a concept only and not officially defined. 5G is not officially defined term or technology but people refer technologies that can deliver the speed beyond 4G as 5G.It's expected to be finalized somewhere in 2012 or 2013. New standard proposals or releases beyond 4G are submitted to standard bodies like 3GPP, WiMAX Forum or ITU-R. Ideal 5G model should accommodate the challenges and accommodate the short falls of the 4G Technology and 4G deployment experiences. To understand the necessities and uses of 5G could be raised once the 4G rollout is completed and experienced. Thus typical 5G concept would be raised in somewhere around 2013-2015. Expected speed may be multiple of Gigabit Ethernet. This technology would be mainly used in backhauling telecom networks rather than end user access. 4G offers theoretically closer to Gigabit Ethernet whereas users expect multiple Gigabit speed from 5G.