Cooperative Media Access Control in Wireless Networks

We present CMAC/DRS, a cooperative relaying enhanced MAC protocol which solves mandatory tasks in coopera tive networks in a throughput efficient way. Our main focus is the relay selection process; we only select relays if requested by the destination and try to minimize the collision probability o f messages in this process. We compare CMAC/DRS with CMAC/ARS and standard non-cooperative IEEE 802.11. Our simulation r esults indicate considerable throughput benefits of CMAC/DR S compared to the reference protocols.