  Most of the IEEE 802.16e Mobile WiMAX scheduling proposals for real-time
traffic using Unsolicited Grant Service (UGS) focus on the throughput and the
guaranteed latency. The delay variation or delay jitter and the effect of burst
overhead have not yet been investigated. This paper introduces a new technique
called Swapping Min-Max (SWIM) for UGS scheduling that not only meets the delay
constraint with optimal throughput, but also minimizes the delay jitter and
burst overhead.
