4g technolgy for mobiles phones to be launched soon

[kashyap putra]

    What is fourth generation (4G) mobile?

4G, an acronym for Fourth-Generation Communications  System, is a term used to describe the next step in wireless communications. A  4G system will be able to provide a comprehensive IP solution where voice, data  and streamed multimedia can be given to users on an "Anytime,  Anywhere" basis, and at higher data rates than previous generations. There  is no formal definition for what 4G is; however, there are certain objectives  that are projected for 4G. These objectives include: that 4G will be a fully  IP-based integrated system. This will be achieved after wired and wireless  technologies converge and will be capable of providing 100 Mbit/s and 1 Gbit/s  speeds both indoors and outdoors, with premium quality and high security.

4G  will offer all types of services at an affordable cost.4G is being developed to accommodate the quality of service (QoS) and rate requirements set by forthcoming applications like  wireless broadband access, Multimedia Messaging Service, video chat, mobile TV,  High definition TV content, DVB, minimal service like voice and data, and other  streaming services for "anytime-anywhere". 4G in principle will allow  high-quality smooth video transmission. It will enable fast downloading of  full-length songs or music pieces in real time.The business of 4Gmobile is predicted to be huge. By  2009, this 4Gmobile market will be over $400B. This 4Gmobile technology will  dominate the wireless communications, and its converged system will replace  most conventional wireless infrastructure.

What will the data rates be for 4G?

At present the download speed for mobile Internet  connections range from 9.6 kbit/s for 2G cellular, up to 200 kbit/s (nominally  384 kbps) for the new Vodafone 3G service (mentioned above). However, in actual  use the data rates are usually slower, especially in crowded areas, or when the  network is "congested".4G mobile data transmission rates are planned to be up  to 20 megabits per second That’s about 10-20 times faster than standard ASDL  services.

In terms of connection seeds, 4G will be about 200  times faster than present 2G mobile data rates, and about 10 times faster than  3G broadband mobile. 3G data rates are currently 2Mbit/sec, which is very fast compared to 2G's 9.6Kbit/sec.