After reading this article you will about :
The science behind Communication, About all mobile technologies, History of G, About 5G, Merits, and Demerits of faster communication.
Electromagnetic Radiation :
Electromagnetic Radiation is base for the function of Wireless Communications. These are invisible waves made of photons. If we send data from one user to another user first these data are converted into binary codes and then sent to the nearby tower. This tower connects to another tower to which the receiver's phone is connected with. Then the second tower sends these waves and the receiver's phone absorb that and convert that binary codes to their real form and that's how the message is shown to us. This process seems a little complicated but the fact is everything is done within a fraction of a second.
Normally we all may use radios once in our life, these radios are worked by Electromagnetic radiation, today our smartphones also use this Electromagnetic radiation to transfer data from place to place. further development of this Electromagnetic Radiation is called G (Generation).
The speed of the message transferred depends on the number of electromagnetic waves produced in a second. It is measured in hertz. 1Hz = 1 wave sent in 1 second. So, if we want to increase the speed of the transaction then we need to increase the level of Hz, and that's how evolutions of G came, just increase the number of Hz per second so that we can transfer data quickly.
But the problem is if we increase the frequency of these waves, their strength and their capacity to travel more distance will decrease, so that's why we are building more towers.
When G was introduced?
The first 1G mobile network in the world was launched by Nippon Telephone and Telegraph company
in Tokyo, Japan on December 1, 1979.
We all may notice these words displaying on our mobile phones near the signal bar. Do you ever think about what is the real meaning? let us see
Generally, Letter G stands for Generation, also if this was shown in our mobile phone near the signal bar at that time letter G stands for GPRS (General Packet Radio Service). It indicates that our internet connection is working at the slowest speed.
GPRS is considered as second generation (2G) mobile technology. It is the slowest of all current mobile technologies.
Letter E stands for EDGE (Enhanced data rates for GSM evolution). This technology is faster than GPRS but still not fast enough for browsing.
3G stands for 3rd generation of mobile technology. It is based on GSM. This technology is faster than
the respective previous generations and can easily browse websites.
Letter H stands for High-speed packet actions. It is an upgraded form of 3G. WCDMA is also a 3G technology and stands for wide Wideband Code Division Multiple Access.
4G stands for 4th generation and also called LTE (Long Term Evolution). It is the mobile technology that we use now and it has a very good fast network connection compared to its older versions
Now comes 5G :
5G is called as 5th generation. It is based on OFDM (Orthogonal frequency-division multiplexing) a method of modulating a digital signal across several different channels to reduce interference. 5G will also be able to provide network speed up to Gigabyte speed. 5G will also reduce latency and said to expand coverage up to remote areas. Latency (The amount of time between sending and receiving signals).
But as we see in the first topic that if we increase the Hz of electromagnetic waves their strength and their capacity to travel long distances can reduce and that's why we are building more towers.
5G waves are faster than their previous generations but cant travel long distances and their waves are not strong enough that's why more towers are built.
But 5G towers will not be like the towers that we see now. Those towers are very small that we can just fix them in a pole these towers are used to strengthen the signals, these antennas use the technology of MIMO (Multiple Input and Multiple Output). They also use BEAM technology today's towers send signals randomly and our mobile phones absorb them, but this BEAM technology sends waves directly to the mobile phone.
Is 5G really harmful :
This radiowaves emit non-ionizing waves that are not harmful to us. But if we use excessive of this it will also harmful to us. This not only for 5G but also for all previous technologies and 4G that we use now.
Countries that started using 5G :
Countries like South Korea, Japan, and China along with other 61 countries already started using 5G.
South Korea already started using 5G national wide.
In India, the 5G network is under testing process. The government of India gave permissions for native companies like Airtel, Jio, Vodafone, Idea, and other companies like Nokia, Samsung to test the 5G network however Central Government did not give permissions for Chinese Companies to avoid the threat to the national security of India.
- "It has become appallingly obvious that our technology has exceeded our humanity."
- Albert Einstein
Authors: Jetson Samuel, Sankareshwaran
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