Conventional heterogeneous-traffic scheduling schemes utilize zero-delay constraint for real-time services, which aims to minimize the average packet delay among real-time users. However, in light or moderate load networks this strategy is unnecessary and leads to low data throughput for non-real-time users. In this paper, we propose a heuristic scheduling scheme to solve this problem. The scheme measures and assigns scheduling priorities to both real-time and non-real-time users, and schedules the radio resources for the two user classes simultaneously. Simulation results show that the proposed scheme efficiently handles the heterogeneous-traffic scheduling with diverse QoS requirements and alleviates the unfairness between real-time and non-real-time services under various traffic loads.
@article{arxiv.0809.3280,
title = {A Heuristic Scheduling Scheme in Multiuser OFDMA Networks},
author = {Zheng Sun and Zhiqiang He and Ruochen Wang and Kai Niu},
journal= {arXiv preprint arXiv:0809.3280},
year = {2008}
}