Communication and Networks
WHAT IS WIRELESS COMMUNICATION?
Wireless communication is the transfer of information from one area or place to the other without the use of any materials like wires, electronic cables, or any other physical medium. That is, this infomation are sent through signals from one wireless device to another like smart phones, GPS recievers, wifi etc.
There are different reasons why wireless communication is seen as the better option today:
1) It is known to be flexible and easy to use eg with your wireless device, you can send information to different people at any point in time without having to fix up electric cables that will be connected from your position to the other person's position. It is more flexible because you can pick up your devices at any point in time, any point and send information to a number of people.
2) In emergency situations and remote options eg in emergency situations, you don't need to connect cables to be able to get to an emergency contact or in the case of wanting to send information from one country to another, wireless devices make it easir as you won't need to connect cables across countries.
WHAT IS CELLULAR NETWORK?
A cellular network is a communication network where the link to and from end nodes is wireless. The network is distributed over land areas calls CELLS, each served by at least one fixed location tranciever.
There has been different generations of mobile networks which include:
1) 1G (First generation): this are the first generation of analog mobile communications that were introduced in the 1980's and were superceded by 2G(the second generation networks).
2) 2G(Second generation): it was launched in 1991 and is the second generation of mobile networks based on GSM(Global sysytem for mobile communication).
3) 3G(Third generation): it is the third generation of mobile networks. It is the upgrade of the previous generations offering faster data and better voice quality.
4) 4G(Fourth generation): it is the fourth generation and supercedes the 3G offering speeds that are 10x faster in data and voice.
5) 5G(Fifth generation): it is the recent generation of mobile cellular network and it supercedes all the previous generations. 5G enables a new kind of network that is designed to connect virtually everyone and everything together including machines, objects, and devices.
