Networked and Embedded Systems

Abstract — We present CMAC/DRS, a cooperative relaying en-hanced 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 of mes-sages in this process. We compare CMAC/DRS with CMAC/ARS and standard non-cooperative IEEE 802.11. Our simulation re-sults indicate considerable throughput benefits of CMAC/DRS compared to the reference protocols. I