DRMA with multiple slots reservation and retransmission algorithm using exponential backoff scheme

Dynamic reservation multiple access (DRMA) has been proposed to improve the spectrum efficiency of the integrated voice and data services. In that protocol, although the fixed reservation overhead is avoidable, a data terminal that transmits a data message with multiple packets has to reserve slot for each packet transmission. In this paper, to improve the data message delay without degrading the voice packet loss probability, we propose the DRMA with multiple slots reservation as the proposed-1 DRMA. We also propose the DRMA with multiple slots reservation and retransmission algorithm using exponential backoff scheme as the proposed-2 DRMA to further improve the data message delay. By the performance evaluation using computer simulations, we show that the proposed schemes reduce the data message delay without degrading the voice packet loss probability comparing to the conventional DRMA.