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Differentiate between Aloha & Slotted Aloha.
written 8.4 years ago by gravatar for sagarnarkar sagarnarkar • 2.1k modified 5.0 years ago by gravatar for abhishektiwari1 abhishektiwari1 • 100
computer networks
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written 8.4 years ago by gravatar for sagarnarkar sagarnarkar • 2.1k

ALOHA:

  1. Pure ALOHA do not required global time synchronization.
  2. In Pure ALOHA, station can send data in continuous time manner.
  3. It allow the user whenever they have data.
  4. Vulnerable time for the Pure ALOHA is 2T.
  5. The average successful transmission for Pure ALOHA is Ge-2G
  6. The max throughput is 0.184 when G=1/2.
  7. Throughput Efficiency is Half as compared to Slotted ALOHA.

Slotted ALOHA:

  1. Slotted ALOHA requires the global time synchronization.
  2. In Slotted ALOHA, station cannot send data in continuous time manner. It divides the time in slot.
  3. It do not allow the user whenever they have data.
  4. Vulnerable time for Slotted ALOHA is T.
  5. The average successful transmission for Slotted ALOHA is Ge-G
  6. The max throughput is 0.368 when G= 1.
  7. Throughput Efficiency is Double as compared to Pure ALOHA.

Note: T: Time Required for one transmission.

Comparison diagram of ALOHA & Slotted ALOHA:

enter image description here
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