Medium Access Control: Stochastic Methods - CSMA

Carrier Sense Multiple Access (CSMA)

Why CSMA?

• ALOHA and slotted ALOHA can easily be implemented, but using them in anything but a lightly loaded network will be extremely inefficient. Designing a network for a very low utilization is possible, but it clearly increases the cost of the network.

• To overcome the problems of ALOHA, many Medium Access Control mechanisms have been proposed which improve channel utilization.

• Carrier Sense Multiple ...