Tuesday, February 21, 2017

Understandpng 1G, 2G, 3G and 4G networks what are these

1G, 2G, 3G and 4G networks are cellular standards or development phase based or the changes and considerable overall developments in the technology. Generally a new phase or a new generation appears after a decade. The 1G or the first generation systems were introduced in  1980/81 and the 4G or the fourth general in 2008. The generations is defined by considerable change the fundamental nature of the service, new frequency bands, wider channel frequency bandwidths, non downward compatible technologies and enhanced data transmission rates. The 1G, 2G, 3G and 4G networks are explained below in brief -

What is 1G network or the first generation network

1G stands for first generation of mobile communication technology developed in the 80s. It was the initial stage of mobile communication. The mobile handsets of this era were of large size, some times of a small brick size and used analogue radio signals. This continued till the development of 2G networks with digital radio signals in the 90s. The size of the mobile handsets was considerably reduced with some enhanced speed. The use of digital radio signals in 2G networks instead of analogue radio signals previously used in 1G network, made the 2G network was quite different. 

What is 2G network or the second generation network

2G means second generation or a Data transmission capacity with GPRS (General Packet Radio Service). 2G was first introduce in United Kingdom in the 90s and allowed the users the text messages service, SMS (Short messages service), Picture messages (MMS, Multi Media Services) and internet WAP (Wireless Application Protocol), though at a slow speed The speed is theoretically 50KBPS but in real it will be 40 KBPS or less and with EDGE (Enhanced Data Rates for GSM Evolution) you will get a real speed of 500 KBPS or less but theoretical its speed is 1MBPS. 

What is 3G network or the Third generation network

3G network is a short form used for third generation, a mobile telecommunication technology capable of transferring data at the rate of 200kbit/s or higher. 3.5G and 3.75G are also the subsequent releases related to 3G which were capable of providing mobile broad band access to smart phones including mobile modems to Laptops. It complies the standards laid down by international mobile telecommunications-2000(IMT-2000). 3G is capable of providing services like mobile TV, Fixed and mobile internet access in addition to voice calls.

What is 4G network or the fourth generation network

4G networks stands for fourth generation mobile network with better voice quality and much enhanced download and upload speed in comparison with 3G network. It provides upload speed of 50 MBPS and a download speed of 100 MBPS whereas 3G provides a speed of 200 KBPS. In fact in 2008, ITU-R (International Telecommunication Radio Sector) has set the IMT-Advanced (International Mobile telecommunications-Advanced) standards for 4G. As per these standards the required peak speed is 1GBPS for low mobility and 100 MBPS for high mobility communications.

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