4G technology will enter into our life in 2010.Many companies working on 4 Generation mobile networks .Ideal data rate for 4G Is 100Mbps which is really very fast and it also provide end-to-end IP connectivity before 4G we are already using 2G,2.5G 3G in different countries.2.5 G providing EDGE and GPRS which enhanced the internet speed upto 384Kbps and widely using all around the world.3g wireless broadband still not implemented in many developing countries or implemented with limited speed rather than ideal speed.
In 3G soft evolution accured from GPRS to UMTS (Universal Mobile Telecommunication System) and cdma2000 enhanced data rate up to 2Mbps.Telecommunication industry already achieved a very good data rate but 4G which is going to launch in near future will enhance the speed of internet upto 100Mbps as i have already mentioned above.4G mobile broadband have competition with WIMAX broadband.According to BBC NEWS, Nokia signed up with Sony Ericsson,NEC and other vendor companies previous year for emerging mobile standard LTE which is also known as 4G mobile technology.
In cellular networks specially GSM is widely spreading industry all around the world.GSM companies want to enhance their networks to 4G technologies.So there will be competition between WIMAX and rest of 4G mobile networks.WIMAX is famous for fixed and mobile LAN'S.It cover area upto 70km.It also uses very high frequency due to which it has a great capacity in one cell.
On the other hand 4G mobile networks which will evolve from GSM uses low frequency as compared to WIMAX so its capacity for each cell will decrease and less number of users in one cell as compared to WIMAX but on the other hand 4G mobile networks provide greater range as compared to WIMAX.
Company like verizon will provide LTE mobile networks is competing with WIMAX company like Sprint which had claimed in 2006 that they will reach 100 million people by the end of year 2008.In fact till 2008 they were present in only one city.Clearwire combined with Sprint competing with verizon .