Guarantee QoS in WiMAX Networks Using Learning Automata

Scheduling Algorithm and Bandwidth Allocation in WiMAX

“…For accurate performance evaluation, we adopt the WiMAX physical layer standard OFDM_BPSK_1_2 in our simulations. [24] The fairness of the scheduling algorithms under bursty traffic is shown in figure 9. As we can see, WRR always maintains almost high fairness, while the fairness of EDF algorithm is the worst among the four algorithms.…”

“…The aim is to use different scheduling policies depending on which queues are not meeting their delay requirements. The state of the system represented by a set of N -1 binary variables {s1: sn-1}, where each variable si indicates whether traffic in the corresponding queue i q [24].…”

“…A two-tier hierarchical architecture is proposed in [24] for WiMAX uplink scheduling. In the higher hierarchy, strict prioritization is used to direct the traffic into the four queues, according to its type.…”