Simplex,Half-Duplex,Full-Duplex Transmission modes

Data transmission process (Communication Channels)

There are three kinds of transmission data flows in the Telecommunication and computer Networking.  This channels can be Physical transmission media or a logical media. Basically we can say transmission flow type is transferring data between to networking devises. A brief introduction about three Data Transmission process types will be given in this part.

 Importance of data flows

•           helps to determine how to transport the data into one end to another end.
•           To identify the communication way between the communication devises.
•           To learn the data flow systems and how it laid.
•           To identify the difference of the three types of data flows and how will be data is transmitting.

01.Simplex

-        simplex is a one direction communication. In this type there is no both way communication. For example: Radio Station, radio station is used in Simplex Transmission because it’s always transmit the signals its listeners and listeners cannot be able to reply in this way. Television setup is also can get the example to the simplex transmission. simplex mode of transmission is data bandwidth can be fully used for one direction and it is a great advantage of the that type.

02.Half-Duplex

       

-        Provides communication for both directions but only one direction at a time. The simplest real world example is a walkie-talkie. Usually, when one direction starts to communicate other side have to listen until it’s over. After the one side communication other end side can replay the other side. If two directions transmit signals at a same time, there are some collision occur between them. After that both way stop transmitting signals and wait and randomly again re transmitting .

-         Example of related networking field: E-mail

03.Full-Duplex 

-        Simultaneous transmission for the both direction. Another word is both station send and receive at the same time. It has two simplex channels it is a forward and backward channel. For a real world example is telephone conversation. Both sides can communicate in simultaneously. Increase the efficiency of communication is the main advantage of full duplex. Transmitting two ways by using full-duplex mode is Bandwidth of the channel should be decreased. It is a main disadvantage of the Full-duplex mode.