CSMA/CA stands for Carrier Sense Multiple Access/ Collision Avoidance. It is a network protocol for transmission. It operates in the Medium Access Control Layer. This protocol is effective before the collision.
CSMA/CD stands for Carrier Sense Multiple Access/ Collision Detection. It is also a network protocol for transmission and operates in the Medium Access Control Layer. In this protocol, each station senses the collision by broadcast sensing. In case of collision, the transmission is stopped and they send a jam signal and then wait for a random time context before retransmission.
The following are some of the important differences between CSMA/CA and CSMA/CD.
|1||Effectiveness||CSMA/CA is effective before a collision.||CSMA/CD is effective after a collision.|
|2||Network Type||CSMA/CA is generally used in wireless networks.||CSMA/CD is generally used in wired networks.|
|3||Recovery Time||CSMA/CA minimizes the risk of collision.||CSMA/CD reduces recovery time.|
|4||Conflict Management||CSMA/CA initially transmits the intent to send the data, once an acknowledgment is received, the sender sends the data.||CSMA/CD resends the data frame in case a conflict occurs during transmission.|
|5||IEEE Standards||CSMA/CA is part of the IEEE 802.11 standard.||CSMA/CD is part of the IEEE 802.3 standard.|
|6||Efficiency||CSMA/CA is similar in efficiency as CSMA.||CSMA/CD is more efficient than CSMA.|