Date Added: Dec 2009
Wireless access points act as bridges between wireless and wired networks. Since the actually available bandwidth in wireless networks is much smaller than that in wired networks, there is a bandwidth disparity in channel capacity which makes the access point a significant network congestion point. The recently proposed Active Queue Management (AQM) is an effective method used in wired network and wired-wireless network routers for congestion control, and to achieve a trade-off between channel utilization and delay. The de facto standard, the Random Early Detection (RED) AQM scheme, and most of its variants use average queue length as a congestion indicator to trigger packet dropping.