Gs of Wifi Technology
Generations of Wireless Technology
When we purchase a mobile phone, we come across many
terms like 4G, 5G etc.,.What are all these about?. Let us have a look on these
terms. The G stands for generation. There are various generations of wireless
technology named as 0G, 1G, 2G, 3G, 4G and 5G used in mobile phones as
discussed below.
0G technology
0G is the name of the technology when telephone was
invented and introduced by Alexander Graham Bell in 1940 and it existed till 1980. During this
period mobile phone was not invented. Only landline phones connected by cables
were used. In this technology only analog
voice signals were used for
communication.
1G technology
This technology was introduced in the early 1980s and it was in usage till 1990.This is the
period when mobile phones were introduced. This was exclusively designed for
voice communication like the 1G technology. In this technology also only analog
signals were used. It was not possible to
send messages in the form of text, image and video. It required an antenna
which was used to communicate signals. The speed of the signal transmission
was up to 2.4 kilobits per second only.
The quality of the voice signal was poor and also the batteries used in mobile
phones had limited life. The size of the mobile phones used was also big and
not handy. Security measures were not implemented for the transmitted signals .
2G technology
The next generation was 2G which used digital signal
transmission for the first time. It was
launched in 1991 and it was used till 2003. It imbibed GSM technology which used digital signals. In
this generation the mobile phones did not
have antenna unlike 1G. The communication data speed was up to 64
kilobits per second. The transmission of text and multimedia messages were possible . The
quality of the message was better than that was in 1G. Later it became advanced
by adding the GPRS technology which
enabled the web browsing, the email services, the uploads and the
downloads of data fast.
3G technology
This
technology existed during the period 2003-2009. It has many advantages when
compared to 2G. The speed of the data transmission is from 144 kilo bits per second to 2
megabits per second . It supported high-speed web browsing. Running web
applications was also possible. Video
conferencing, multimedia message
transmission via email were started when 3G was used. The added advantages to
this 3G technology is fast and easy transfer of audio and video files and it
also supported 3d gaming. It also had some drawbacks. The cost incurred for the
infrastructure setup, training persons to install towers and licensing
was high.
4G technology
Fourth generation technology is keeping up the trend of a new mobile generation.
It was introduced in 2011 and it lasted till 2020. It had its own
characteristics. The speed is increased from hundred megabits per second to one
gigabit per second. Everyone nowadays is using the 4G. It makes people use mobile web access easily. It implements
high-definition mobile TV, cloud computing facility and IP telephony. In simple
words, we call the fourth generation technology as a MAGIC where M stands for
mobile multimedia, A stands for anytime anywhere, G stands for global mobility support, I stands for
integrated wireless solution and C
stands for customized personal services. The speed of data transmission is ultra-broadband (gigabit speed). The Peak download and the Peak upload are 1000 Mbit/s and 500 Mbit/s respectively.
It has its own disadvantages. 4G introduces a noteworthy inconvenience for
people who travel internationally or
like to switch carriers. To implement voice calls, the subscriber handset must not only have a
matching frequency band but also the matching
settings established for the local carrier and/or country.
5G technology
This technology is a new, faster network that has the potential
to transform the internet. It is a software defined network which means that
while it won’t replace cables entirely it
could replace the need for them by largely operating on the cloud instead. This means it will have a 100x better capacity than 4G which
will dramatically improve internet speeds. The fifth generation was started
from late 2010. It is a complete wireless communication with almost no
limitations . It is highly compatible to
wwww ie.,wireless world wide web which
has its own benefits as follows. It has got high speed and high capacity providing large
broadcasting of data in gigabits per second. It also supports multimedia newspapers, TV programs with HD
quality, faster data transmission, large
phone memory, clarity in audio or video. So all the high-end features will be
provided in the fifth generation technology. It's a complete wireless
communication with almost no limitations. It supports an interactive multimedia
streaming. This technology is more effective and more attractive. It is going
to give tough competition to computers and Laptops. Though it is available in
the market at present with more reality
than the previous mobiles it is not availed by people as its cost is not
affordable for every one.
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