What is 2G Cellular Network and its history

Do you know what is 2G Cellular Network? How it works, what are its important features? After 1G in wireless technology, 2G had changed the entire function of mobile communication. Where there was only Voice in 1G, data service is also provided with Voice in 2G. The main difference between 1G and 2G is that while the radio signals used in 1G are analog, the signals of 2G network are digital. This gave people a chance to use their cell phones completely. Along with them, they also got text encryption, data service like SMS, picture message and MMS.

In 2G or second generation communication, the phone conversation is fully digitally encrypted. This increases the security of communication significantly compared to 1G. 2G technology has taught people to use internet along with talking in their cell phones. This left people calling their cell phones just calling devices and started calling this a utility device. So today I thought that I should provide you complete information about what is 2G Network so that you can know about the advancement of Mobile Technology. Then without delay let's start and know about 2G technology.

Cell phones got the first major upgrade when the technology used in it was upgraded from 1G to 2G. This technology was first used in GSM networks in Finland in 1991. This led to a huge change from analogue communication of phones to digital communication.

2G's Full Form is Second Generation. 2G telephone technology included new features such as call and text encryption, which included data services such as SMS, picture messages, and MMS. Suppose 2G replaced 1G, as has happened with all new technology. But even after the arrival of 3G, 2G is still used in many countries.

The maximum speed of 2G is 50 Kbps in General Packet Radio Service (GPRS). There is 1Mbps in Enhanced Data Rates GSM Evolution (EDGE). The main objective of this generation is to provide a secure and reliable communication channel. It has implementation of both concept CDMA and GSM. To achieve 2G capabilities, multiple users are allowed a single channel by multiplexing.

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2G max speed is 50 Kbps with General Packet Radio Service (GPRS) and 1 Mbps in Enhanced Data Rates for GSM Evolution (EDGE). Before 2G to 3G wireless networks, that gap is bridged by the very little known technology 2.5G and 2.75G.

History of 2G (First Generation)

Second generation 2G cellular telecom networks were commercially launched in the GSM standard, also in Finland's Radiolinja (which is currently a part of Elisa Oyj) in 1991.

Features of 2G Technology

Let us now discuss the important features of 2G Technology.

In second generation communications, phone conversations are digitally encrypted. This greatly increases its security.

2G GSM Technology works in many different frequency bands 900/1800.

In this, Digital Modulation was first introduced.

Its data rate up to 9.6 Kbps.

There are voice calls, noise-free due to digital modulation.

In 900 uplink which is the frequency range of BTS to mobile is 890-915 MHz and in the downlink which is the frequency range of BTS to mobile is 935-960 MHz.

2G uses two types of multiple access TDMA based GSM technology and CDMA based IS 95 technology.

GSM uses different types of carriers of frequency 200 KHz, where 124 carriers are used in the 900 frequency band, while 373 carriers are used in the 1800 frequency band.

Data service first started in the form of SMS and later GPRS was introduced.

Up to 61 users in CDMA technology can communicate simultaneously with great comfort.

CDMA also has a bandwidth of 20 MHz in 800 bands and 1900 bands.

This technology does not support multimedia services.

Examples are GSM and CDMA.

Technologies used in 2G

In fact there is no network by speaking 1G technology, to say that communication technology has increased since the arrival of 2G. It included many such features that you could not find in 1G. 2G network has been a very successful network which was very popular from 1980 to 2003. There were some such advancements in 2G in its spectrum which made it very popular. GSM, GPRS and EDGE are prominent among them.

1. GSM: Its full form is Global Systems for Mobile Communication. In this, data transfer is also enabled with voice communication. Its speed is 30-35 kbps. It has played a very critical role in the development of mobile technology.

2. GPRS: Its full form is General Packet Radio Service. It also works like similar 2G technology like GSM.