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Line 6: CSMA/CA is a modification of pure [[Carrier Sense Multiple Access]] ('''CSMA'''). Collision avoidance is used to improve the performance of '''CSMA''' by attempting to be "less greedy" on the channel. If the channel is sensed busy before transmission then the transmision is deferred for a "random" interval. This reduces the probability of collisions on the channel. CSMA-CA is used where [[CSMA-CD]] cannot be implemented due to the nature of the channel. CSMA-CA is used in [[802.11]] based [[wireless LAN]]s. In a [[wireless LAN]], not all stations can "see" all other stations. Hence, collision detection is no longer an option~~. See CSMA/CD too~~. ==Usage==

Carrier-sense multiple access with collision avoidance: Difference between revisions