An Enhanced ARQ Scheme for A-MPDU Transmission Under Error-Prone WLANs
Linjie Zhu, Bin Wu, Tianchun Ye · IEEE Communications Letters · 2019
A protocol-friendly enhanced automatic repeat request (ARQ) scheme is proposed in this letter to improve the probability of successful retransmission by combining lost medium access control protocol data units (MPDUs) and their duplicates into an aggregate MPDU (A-MPDU) when the number of lost MPDUs is small. To study the performance of the proposed scheme, we provide a mathematical model that analyzes the saturation throughput and selects the optimized parameters to obtain the best performance. The simulation results show that the proposed analytical model is accurate and its performance is superior to that of the conventional aggregated selective-repeat ARQ scheme in 802.11ac error-prone wireless local area networks when the channel is worse and the physical layer rate is higher.