What is 5G? Understand the
complete technology, advantages and challenges in just 5 points
We have reached the year 2021 and this is
the era of 5G! 5G is being discussed for the last about 2 years and now its use
has started in countries like China, America, Japan and even South Korea. As
soon as 5G is discussed, we start talking about things like automatic vehicles,
Augmented Reality and Internet of Things. But amidst the discussion on 5G, many
people must be curious to know what is 5G technology and how it will make a
place among the existing technology. So let us try to explain it to you. Let me
tell you that there will be difficult words at some places throughout this
article, but you should be patient. I will try my best to explain it to you.
What is 5G?
5G is the fifth generation of mobile
networks. Think of 5G in such a way that 100 times the speed of 4G network.
Like 4G, 5G is also based on the same mobile networking principal. The fifth
generation wireless technology is capable of delivering ultra low latency (the
speed of the signal between your phone and the tower) and multi-Gbps data speeds.
It is a software-based network, developed to enhance the speed and performance
of wireless networks. This technology also increases the data quantity, which
can be transmitted over the wireless network.
5G technology is based on five
technologies
1. Millimeter wave
2. Small cells
3. Maximum MIMO
4. Beamforming
5. Full duplex
5G technology has five bases
5G technology is capable of operating in
the "sub-6 band", the frequency of which generally ranges between
3Ghz-6Ghz. Most of the current devices like mobiles, tablets and laptops also
work in this frequency, whose reach is very high.
However, due to a lot of
traffic in this system, now researchers are thinking of using above 6Ghz. They
are set to work on 24Ghz-300Ghz spectrum which is considered as high-band.
Experts also call it millimeter-wave.
Millimeter-wave 5G
Millimeter-wave 5G acquires a lot of data,
which makes data transfer possible at speeds of up to 1 GB per second. Such
technology is currently being used by telecom operators like Verizon and AT&T
in the US.
Speed Sales
The second basis of 5G technology is speed
sales. Millimeter-wave has a problem with range, which is compensated by speed
sales. Since mm wave cannot operate in obstructions, a large number of mini
cell towers are installed throughout the area to relay the signal from the main
cell tower. These small cells are placed at a shorter distance than the
traditional tower so that users can get the 5G signal without any interruption.
Maximum MIMO
The next basis of 5G technology is maximumMIMO, ie multiple-input and multiple-output technology. Large cell towers are
used to manage traffic using this technique. A regular cell tower that provides
4G network comes with 12 antennae that handle the cellular traffic in that
area.
MIMO can support up to 100 antennas
simultaneously which increases the capacity of the tower when there is heavy
traffic. With the help of this technology, it helps to transmit 5G signal
easily.
Also read - What is Artificial Intelligence? Know about its application and examples
Beamforming
Beamforming is a technology that can
continuously monitor multiple sources of frequency and when one signal is
blocked, it switches to another stronger and higher speed tower. This ensures
that specific data goes only in a specific direction.
Full Duplex
Full Duplex is a technology that helps in
transmitting and receiving data simultaneously in the same frequency band. This
type of technology is used in landline telephones and short wave radios. It is
like a two-way street, which sends equal traffic from both the sides.
Benefits of 5G Technology
Just imagine that you downloaded a full HD
movie within 3 seconds. 5G network is going to be so fast. According to
Qualcomm, 5G is capable of delivering speeds of 20 GB per second in traffic
capacity and network efficiency.
Also with mm wave, you can get a latency of
1ms which helps in establishing the connection quickly and reducing the network
traffic.
Qualcomm President Cristiano Amon also
believes that the 5G network will give such speed, which can experience
augmented reality in real time. This will also help in the development of
hardware working on Augmented Reality.
This technology is going to be the basis
for virtual reality, automatic driving and the Internet of Things. This is not
only going to enhance your smartphone usage experience, but is also going to
help in the development of medical, infrastructure and even manufacturing.
Challenges of 5G
Bringing 5G technology is going to be very
expensive. Network operators will have to remove the existing system as it
requires frequencies higher than 3.5Ghz which is a larger bandwidth than that
used in 3G or 4G.
The bandwidth of the sub-6 Ghz spectrum is
also limited, so its speed can be lower than that of millimeter-wave.
In addition, millimeter-wave is more
effective over short distances and may not work in obstructions. It can also be
absorbed by trees and during rain, which means that you will need a lot of
hardware to implement 5G in a concrete way.
There has been an expansion of 5G but not
according to the expectations of the people. According to the GSMA Intelligence
Report, even under the current rate, 5G will not be able to overtake 3G and 4G
till 2025.
However, Qualcomm President Cristiano Amon
believes that the number of 5G smartphones will be 750 million by 2022 and 5G
connections should be 1 billion by 2023. It has taken more than two years for
4G to reach this figure.
Apart from this, there is also the issue of
security and privacy with 5G technology, which will be known only after more
use.
Can 5G work with 4G?
5G works better in spectrum frequencies
above 6Ghz. Older technologies like 2G, 3G and 4G also operate on wireless
bands that range between 3.5Ghz to 6Ghz.
According to a report by Android Central –
5G can work with 4G, but due to the use of 3Ghz-6Ghz spectrum, researchers are
experimenting on shorter mm wave between 30Ghz-300Ghz beyond 6Ghz.
Such spectrum was earlier used for television but never for mobile devices. Moving to this spectrum means getting more bandwidth for mobile devices.
Some technologies such as 5G NR
(New Radio) and even 5Ge (AT&T proprietary LTE Advanced Network) work on 4G
networks, but they are not as fast as mm wave, which means speeds in excess of
1 Gbps. Will have to install new hardware.
0 Comments
Post a Comment
If you have any doubt, please let me know