Date Added: Dec 2009
The application of Voice over-IP (VoIP) over WLANs has drawn a lot of attention from both industry and academia. Currently, the highly dense deployment of WLANs results in that the number of stations in a Basic Service Set (BSS) increases quickly, and thus the work on the capacity for VoIP is becoming a new research hot point. For many of today's 802.11 MAC implementations, the 802.11e requires a HW upgrade. However, replacing existing 802.11 HW devices to provide QoS is costly, and hence may not be desirable to many WLAN owners, especially, hotspot service providers with a huge number of deployed APs.