ALOHA & its types || Pure ALOHA and Slotted ALOHA

 ALHO Protocol:

ALOHA is a type of random-access protocol that allows simultaneously transmission of data frames by multiple stations over a common communication channel. Random-access protocol means that anytime multiple users can access the channel according to their requirements.

 

Types of ALOHA

a)      Pure ALOHA

b)      Slotted ALOHA.

 

a)      Pure ALOHA:

Pure ALOHA allows the stations to transmit data at any time whenever they want. After transmission the data packet, station waits for some time.

Advantage: the main advantage is that it is simplicity in the implementation.

Disadvantage: Time easting, data lost because of collision.

b)     Slotted ALOHA:

It divides the time of shared channel into discrete intervals called as time slots. Any station can transmit its data in any time slot.