Dynamic scheduling of PCF traffic in an unstable wireless LAN

IEEE 802.11 MAC protocol PCF is intended to facilitate real time traffic, however, the performance of PCF is highly affected by conditions on the WLAN and it has unnecessary overhead. To address these problems, we propose an aging priority scheduling algorithm and a dynamic adaptation algorithm to vary the PCF interval based on the traffic and reduce the overhead. Simulation results show our algorithms are efficient and suitable for PCF traffic.