Abstract

The main task of a MAC protocol is to prevent simultaneous transmissions or resolve transmission collisions of data packets while providing energy efficiency, low channel access delays and fairness among the nodes in a network [1]. The Aloha protocol is a fully decentralized medium access control protocol. This protocol was introduced to improve the utilization of the shared medium by synchronizing the transmission of devices. The performance of the Carrier sense Pure ALOHA is evaluated in this paper on the basis of throughout of the system and the average number of retransmission needed for the successful transmission of a packet. Performance criteria are analyzed with change of offered load of the system. The simulation is a Monte Carlo based one on the MATLAB platform.