Carrier Sense Multiple Access with Collision Resolution

We propose a distributed medium access control (MAC) protocol called carrier sense multiple access with collision resolution (CSMA/CR) by extending the wireless CSMA/CD protocol. The proposed CSMA/CR protocol identifies a collision by additional sensing after data transmission starts. If one station detects a collision, it transmits a jam signal to stop the other stations´ transmissions and then retransmits the data without backoff, which resolves the next collision that may occur. The throughput analysis shows that the proposed CSMA/CR protocol outperforms other conventional CSMA-based MAC protocols.