  In this paper we suggest advanced IEEE 802.11ax TCP-aware scheduling
strategies for optimizing the AP operation under transmission of unidirectional
TCP traffic. Our scheduling strategies optimize the performance using the
capability for Multi User transmissions over the Uplink, first introduced in
IEEE 802.11ax, together with Multi User transmissions over the Downlink. They
are based on Transmission Opportunities (TXOP) and we suggest three scheduling
strategies determining the TXOP formation parameters. In one of the strategies
one can control the achieved Goodput vs. the delay. We also assume saturated
WiFi transmission queues. We show that with minimal Goodput degradation one can
avoid considerable delays.
