Abstract
The performance of wireless systems is greatly influenced by the multiple access protocols used in the radio access system. Packet reservation multiple access (PRMA) protocol is an adaptation of the Reservation ALOHA protocol to the wireless environment. In this paper, a new modified version of the PRMA protocol called PRMA with adaptive permission probability (PRMA-APP) is proposed. Then, the analytical model using a generic Markov chain model has been developed to analyze the PRMA-APP performance. In addition to the Markov model, a simulation program is developed to study the performance of this proposed PRMA-APP protocol at different scenarios. Through simulations and analytical analysis, the performance of proposed PRMA-APP protocol is evaluated and compared against the traditional PRMA and PRMA with random contention protocols. The performance analysis results show quantitative improvements in the performance of PRMA-APP with respect to the performance of traditional PRMA and PRMA with random contention. The results confirm that the PRMA-APP scheme is more robust and provides better balance in terms of channel utilization and low packet delay for all traffic conditions than the other two PRMA protocols.