a supervisor based scheduling architecture for 802.16 systems
This paper presents a new scheduling architecture for the uplink traffic in 802.16 systems. The proposed scheme is based on three main modules: a traffic supervisor that periodically checks the measured quality of service (QoS) parameters of each traffic flow, a packet scheduler that gives the unsatisfied flows the highest priority and a slot allocator that redistributes the available slots of each uplink frame between the scheduled flows. The implementation of the proposed approach under the network simulator NS2 allowed us to conclude about the effectiveness of the proposed scheme by studying and analyzing the impact of the added modules on the traffic behavior and on the system performance.
scheduling 802.16 qos