Comparison of frame aggregation mechanism in 802.11n WLAN

IEEE 802.11n Draft is an ongoing next-generation wireless LAN standard. This paper describes detailed description and comparative study of various frame aggregation mechanisms proposed in the latest 802.11n draft standard, which improve extensively the channel efficiency and data throughput. Ns 2 simulator is used for simulation of 802.11n WLAN frame aggregation. Simulation results confirm that A-MPDU, and Two level frame aggregation methods improve extensively data throughput. It analyze the performance of each frame aggregation scheme in distinct scenarios, and it conclude that overall, the two-level aggregation can improve throughput performance of 802.11n. Two level aggregation can more effectively deliver data from multiple sources, PDR rate is much higher with much lower delay and less energy consumption as compared with A-MPDU approach.