Adaptive Two-Level Frame Aggregation for Fairness and Efficiency in IEEE 802.11n Wireless LANs

Table 1

Performance anomaly of IEEE 802.11 DCF due to differences in packet size and data rate.

Configuration	STA1	STA2	STA3	STA4
Packet size (bytes)	250	1000	250	1000
Data rate (Mb/s)	13	13	65	65
Unit transmission time (ms)	0.312	0.774	0.150	0.242
Attempt probability	0.093	0.093	0.090	0.091
Throughput (Mb/s)	1.061	4.109	1.073	4.197
Airtime ratio	0.166	0.397	0.080	0.127