Abstract
Random access protocols play an important role in the communication between elements of different newly emerged networks such as radio frequency identification (RFID), wireless sensor networks (WSN), and machine-to-machine (M2M) communication networks. New random multiple access (MAC) protocols have been suggested to satisfy the needs of such networks. These MAC protocols are recently aimed at the improvement of systems efficiency by resolving interferences and collisions in the received signals. This work considers one of such protocols called frameless ALOHA and proposes a technique to improve its energy efficiency without any loss in the network throughput comparing to the highest yet achieved in this scheme. More specifically, we propose a mechanism to adaptively change the probability of access at the users side. The proposed technique is the same as the original frameless ALOHA that does not need a coordination between the users. Our simulation results verify the improvement in energy efficiency when our proposed algorithm is the method of access.
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