A Multimedia Traffic Scheduler for IEEE 802.16 Point-To-Multipoint Networks

In this paper, we describe and evaluate an advanced traffic scheduler for IEEE 802.16 point-to-multipoint networks, referred to as "Colored Frame Registry Tree Scheduler" (C- FRTS). The main characteristics of this scheduler are i) the use of a tree structure to prepare the creation of time frame maps and reduce processing requirements at the beginning of each frame, and ii) a colored discrimination of packets scheduled for transmission to guarantee the bandwidth reserved for different connections. Simulation results show that C-FRTS can guarantee major QoS parameters, such as the maximum latency and the minimum and maximum reserved bandwidth, as well as provide differentiated treatment to the various service types.