Packet scheduling over a shared wireless link for heterogeneous classes of traffic

We propose a quality of service (QoS) management framework and a packet scheduling scheme over a shared wireless link for heterogeneous classes of traffic. The QoS management framework is developed based on the characterization of different QoS requirements of heterogeneous traffic classes. The framework comprises two subsequent packet scheduling modules and load control modules. Based on the QoS management framework, we propose an effective packet scheduling scheme that accounts for the wireless channel, status of packet queues, the degree of QoS satisfaction, and fairness among sessions. Simulation results show that the proposed packet scheduling scheme provides better performance than the previously proposed schemes in light or moderate system load, and that it provides fair sharing of QoS degradation in overload.