Before revision:  We investigate resource allocation problems where the scheduling duration (i.e., time ) is optimized through Lyapunov optimization techniques by taking into account the padding overhead, airtime fairness and energy consumption of the users.
After revision:  In this work, for OFDMA based 802.11 WLANs we first propose practical algorithm in which the scheduling duration (i.e., time ) is optimized through Lyapunov optimization techniques by taking into account the padding overhead, airtime fairness and energy consumption of the users.