What is a 4G Technology

There was a time when surfing internet through mobile was really rare and was pretty slow. later came gprs [general radio for radio services]and 2g services which used gsm sims  . Although these were better than previous technology but still speed was not very fast. And then with introduction 3g technology everything changed and it revolutionalised and changed the world of mobile technology. now one can easily chat surf and download any file within minutes . And now the technology is taking one more huge step and moving towards the 4g technology. the 4g technology is the most advanced and fastest cellular and wireless internet providing technology. Although it has not yet been used by each country. but still countries like america, britain, france and many other countires have already moved to 4g. so lets see what basically a 4g technology is.

4G is a 4th generation mobile internet technology. A huge improvement over 3g technology. It is anext generation technology which will wipe its predecessor 3G out of the surface of the world. This 4g technology has promised to offer widespread, complete and invulnerable all-IP (Internet Protocol) based services example of such services are high quality multimedia streaming, enhanced gaming services, super fast broadband Internet access, IP telephony and etc. All these and many more facilities will soon be available to people all around the world by this groundbreaking technology.The reason behind the development of 4g technology is to provide accommodation for the required Qos and rate that was set as requirements by the advanced growth of current 3G applications such as, mobile TV, wireless broadband service, video chat, MMS that stands for Multimedia Messaging Service and also the famous HDTV contents. The fourth generation technology may also provide wireless LAN roaming and may also intermingle with systems that are used for digital video broadcasting.

4G which is also be referred as “International Mobile Telecommunications Advanced” in short IMT Advanced promises to have a targeted maximum data speed up to around 100 mega bytes per second for outdoor users like instant access to Internet by mobiles or smartphones and for indoor users like the LAN (Local Area Network) users the data speed would be around 1 Giga bytes per second, for both the mobile or fixed stationed Internet users this type of higher speed, which has never before, is truly awesome and mind-blowing. Also up to 40 mega hertz of scalable bandwidth must be provided, according to ITU requirements. The frequency-domain equalization policy has removed the CDMA spectrum radio technology that was being used by the IS-95 and 3G stations.

Here are the main objectives that 4g technology will offer when after it is fully developed.

100mbps would be the normal data rate for the users who are not stationary and moving at high speeds and 1gbps would be the maximum data rate when the user is indoor or at a fixed position.

Bandwidth flexibility, between 5 to 20 mega hertz maximum up to 40 mega hertz

Worldwide roaming over multiple networks and flawless connectivity

Spectral efficiency downlink up to 3 bit/s/Hz/cell and for fixed or indoor usage 2.25 bit/s/Hz/cell

All-IP based network means packet switched network