h3cDot11StationWmmCacEnabled 1.3.6.1.4.1.43.45.1.10.2.75.9.1.3.1.6

Represents the AC to adopt the No ACK policy. The protocol defines two ACK policies: Normal ACK and No ACK. Only if the value of h3cDot11StationWmmAC is 'acvo' or 'acvi', Cac can be set correctly here.