A Hybrid Protocol for Stop and Wait ARQ in Markov Two States Model

摘要

In this paper, a hybrid protocol is presented for improving the performance of Stop and Wait (S/W) ARQ with Aggressive Packet Combining (APC) schemes using Markov two states Model. APC protocols are not onlymimplemented to get a correct copy but also to reduce retransmission of duplicate copies. To reduce the retransmission of duplicate copies in conventional ARQ protocols, Packet Combining (PC) and APC have been studied. Thus, the proposed protocol is considered under two states of Markov model i.e., good and bad states channel. The simulation results have shown that in the long period of bad state that the proposed protocol still obtains better in probability of packet error, mean energy consumption, and packet throughput over PC and APC schemes but lower throughput than S/W ARQ.