Difference between Aloha and Slotted Aloha ?
Answer (1)
8th May, 2021
Hello aspirant,
In Pure Aloha, Stations transmit whenever data is available at arbitrary times and Colliding frames are destroyed. While In Slotted aloha, A station is required to wait for the beginning of the next slot to transmit.
Now, we shall see the difference between these Protocols:
| S.NO | Pure Aloha | Slotted Aloha |
|---|---|---|
| 1. | In this aloha, any station can transmit the data at any time. | In this, any station can transmit the data at the beginning of any time slot. |
| 2. | In this, The time is continuous and not globally synchronized. | In this, The time is discrete and globally synchronized. |
| 3. |
Vulnerable time for pure aloha
= 2 x Tt |
Vulnerable time for Slotted aloha
= Tt |
| 4. |
In Pure Aloha, Probability of successful transmission of data packet
= G x e-2G |
In Slotted Aloha, Probability of successful transmission of data packet
= G x e-G |
| 5. |
In pure aloha, Maximum efficiency
= 18.4% |
In slotted aloha, Maximum efficiency
= 36.8% |
All the best for your future
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