Rotating Priority Queue based Scheduling Algorithm for IEEE 802.11n WLAN

The IEEE 802.11 working groups are currently working on the support of quality of service (QoS) and enhancements for higher throughput in a new standard called IEEE 802.11e and IEEE 802.11n, respectively. Although each standard focuses on only the specified issue as mentioned, the wireless LAN (WLAN) products based on IEEE 802.11n have to support both of them. IEEE 802.11n products provide QoS support as well as high throughput with frame aggregation. In this paper, we propose QoS scheduling and frame aggregation algorithm on the basis of rotating priority queue to manage the delay budget and control frame aggregation. Simulation results show the performance improvement of the proposed algorithm in the context of average delay and packet drop rate.