Multiple access with the ability to hear the carrier signal is a/the Prevention of collisions (Carrier Sense Multiple Access/Collision Avoidance) or CSMA/CA in computer networks, multiple access in wireless networks is that in it:
- plan, bugging the carrier used.
- that intend to send data, there should be time certain to the ear canal and detects whether the ninety-else intend to send information on the channel in the wireless related to himself or not. If the channel ",". then, the ninety allows you to open the post process to begin. But if the channel "busy". ninety aforementioned process, send to the current random, another postponed. As soon as the exchange of information began, there is a possibility that the send the actual information occur.

CSMA/CA correction for the multiple access with the ability to hear the carrier signal. The Prevention of concussion to improve the performance of CSMA is used. Method, so that if are sending the information. ninety let the other Send will not. so with this, the probability of collision reaches a minimum.

CSMA/CA is a method to access layer 2. however, in the OSI model, a protocol to separate is not