DRMA-AR: Distributed reservation multiple access with adaptive requests for wireless networks

In wireless networks, high channel throughput, low transmission delay and high energy efficiency are important requirements in designing medium access control (MAC) protocols. To enhance these essential requirements, this paper introduces a distributed reservation based multiple access scheme with adaptive requests (DRMA-AR). It is a schedule based scheme whereby each terminal contends for channel reservation. This scheme guarantees stable data transmission based on exclusive channel use in reserved slots and provides efficient reuse of channel resources according to varying traffic demands. DRMA-AR also provides low transmission delay due to successive use of channel resources in every frame via reservation. In addition, to save energy, control packets are used only for channel reservation between a sender and a receiver, and terminals follow a low duty cycle to decrease unnecessary energy consumption. Simulation results show that this scheme offers better channel throughput, lower end to end delay, and lower energy consumption than CSMA/CA for wireless networks.