Fourth generation technology (4G)

[cec foces]

4G is the latest phenomenon to metamorphose the cellular superhighway,
soon to succeed its predecessors 3G and 2G. G stands for the
generation in mobile technology that have come of age maturing down
the line over 20 to 30 years. The first generation mobile technology
were based on analog telecommunication standards. 2G technology
evolved in 1990s, introducing digital circuit switched transmission
and SMS text messaging. This was followed by a big leap in the form of
3G, aka IMT-2000 that marked the major advances in mobile technology
including efficient data handling enabling video calls, accessing
websites in oiginal format and much more. For 3G what better example
can you have if not iPhone 3G. 4G system is anticipated to
revolutionize the functioning of communication networks with
comprehensive and secure IP based solution facilitating voice, data
and streamed multimedia Anytime, Anywhere and with much higher data
transfer rates than its predecessors.

4G- Blueprint of Goals
4G mobile is under the process of being established according to the
set standards. It's features are more of a blueprint based on goals
rather than requirements. Let's take a snap of the goals set for 4G

Faster data transfer rates
Enhanced security measures than its predecessors
Reducing blips in transmission when a device is moved from one
networks coverage to another
4G mobile networks should also use a network based on the IP address
system that is used for Internet
One World One device: Global roaming in 4G


The fourth generation would completely transform the mobile phone
networks, in to end to end IP based networks, couple this with the
arrival of IPv6. With a unique IP address for all devices in the
world, it would initialize full IP based communications from a mobile
device right from the core of web.

It would truly harmonize global roaming, super high speed connectivity
and transparent end user performance on every mobile communications
deice in the world.

Once on the stage is set, 4G would offer 100 Mbps to roaming mobile
device globally and around 1 Gbps to a stationary device. Clearly,
this could have wider implications including overwhelming wireless
performances like enhanced video conferencing, streaming panoramic
video and much more.

The giant leap would require a massive infrastructural makeover in the
phone networks - multiplying the traffic load on the internet as a
whole. 4G needs swifter backbones and oceanic links for a smooth run.
For paralleling things, think of 1 billion 100mb nodes attached to a
network over night.

Who's using 4G?
There are two major systems in U.S, which are using the 4G mobile
technology - WiMax, backed by Clearwire and Long Term Evolution or
LTE. WiMax's majority owner is Sprint Nextel. They had started testing
services in Baltimore in 2008 and waiting to expand their coverage
over 80 cities by the end of 2010.

Long Term Evolution is backed by Verizon. According to cnet, Verizon
has completed initial 4G wireless test, but not available for
widespread use until 2012.

WiLAN and 4G Network technologies have signed a U.S $ 31 million
purchase order as a part of 5 year supply agreement to build a fourth
generation cellular network throughout US

Well, 3G is yet to reach its zenith and 4G couldn't be an overnight
phenomenon. In such a situation we can just keep our fingers crossed.
There's an air of speculation that suggest the fourth G would take on
the mobile world by 2010. For the time you can just wait and watch our
updates.

Source:wise Geek, 4G technology