A mobile or cellular network is a combination of mobile towers signals and connection of mobile tower switching office (MTSO) with mobile sim data.

What is cellular network
Cellular Network Diagram


MTSO stands for mobile tower switching office. It stores all mobile sim data. All calls are directed to other cities and countries through MTSO. Every city has 1 MTSO that is connected to many mobile towers.

Mobile Tower or cell:

Mobile network is divided into different geographical areas known as cells. Each cell has a transceiver (mobile tower) that make a wireless connection to the mobile device. Each mobile tower is also connected to MTSO (mobile tower switching office) through fibre optics.

Our mobile has not enough signal powers to directly call a caller residing in another city. Our mobile sends signals to a mobile tower. The mobile tower then sends signals to MTSO. MTSO check our sim data and send a signal to another city MTSO. Then MTSO (mobile tower switching office) sends signals to mobile through the mobile tower.

The data in our mobile is in digital form. Our mobile has an antenna that transmits data in the form of electromagnetic waves. The speed of data transfer rate depends upon which technology our mobile is using. Some mobile generations are 2G, 3G, 4G and 5G.

The details of these mobile generations are explained in the picture below.

1G vs 2G vs 3G vs 4G vs 5G

Types of the mobile network:

The types of a mobile network are:-

  • GSM (Global System for Mobile Communication)
  • GPRS (General Packet Radio Service)
  • CDMA (Code Division Multiple Access)
  • EDGE (Enhanced Data for Global Evolution)

Example of the mobile network:

The mobile phone is a great example of a mobile network. There are various types of mobile phones. Some are touch screen and some have a physical keyboard. Some mobile phones use 2G, 3G, 4G and 5G technologies. Mobile phones connect to the internet via WI-FI or using mobile data.

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