Efficient Frame Aggregation with Frame Size Adaptation for Next Generation MU-MIMO WLANs

This paper aims to provide an efficient frame aggregation in medium access control (MAC) layer for downlink multi-user multiple input multiple output (MU-MIMO) transmissions in IEEE 802.11ac wireless local area networks (WLANs), and proposes an efficient frame aggregation scheme which enhances system throughput and decreases frame error rate. In the proposed scheme, the receiving mobile terminal (MT) selection gives higher priority to MTs achieving higher throughput in the next MU-MIMO transmission while reducing signaling overhead, leading to system throughput improvement. The wireless frame setting in the proposed scheme, introducing hybrid frame aggregation method, provides lower frame error rate than acceptable level by using frame size adaptation. Through system-level simulation, the effectiveness of the proposed scheme is validated in downlink MU-MIMO transmissions on WLANs.