Mobile Networks

The mobile network didn't started with all those facility we see or use today. It all started with analog communication, known today as 1G network. Later with the advancement it was digitalised in the name of 2G. Then we saw 3G and 4G comming. We will discuss them all in detail:

1G: Stared in 1987, mobile commmunication was analog in nature. It worked as normal radio transmission. One could use 1G network for only calling purpose. The channel used for communication was split between users using FDMA technique. In FDMA (Frequency Division Multiple Access) the users are distributed over the network by spliting the fequency band. The available spectrum was divided in 30KHz band channels and each channel was dedicated for only one user. Though the same the same frequency channel was resued at other mobile user away from the user aleady using it. This concept is called as frequency reuse. The drawbacks of 1G was:

• Not able to support the increasing number of users.
• Security issues as it was analog in nature.
• Disturbance, interference, background noise were the other concerns.

2G: 'G' means generation. So, the next generation of mobile network was named as 2G and previous was given the name 1G. (1G got its name after second generation was introdued. 2G was a jump from analog communication to digital communcation. Digitalization brought security, more clear voice, and transfer of data packets for the internet. 2G worked on TDMA. In TDMA (Time Division Mulple Access), each channel band was again didvied using time parameter, which helped in accomodating more number of users. 2G made possible to communicate with anyone around the globe. 2G brought so many possibilities but, it also had limitations.

Limitation with 2G will discussed in the next post, along with 3G and 4G.

Keep Learning, Keep Sharing..~~!!

Ta-Ta