New and more powerful PDAs are placing increasing demands on existing network infrastructures, causing organizations to rethink their current wireless strategies. There are two problems here: WLANs provide shared bandwidth, forcing each individual PDA to divide the bandwidth available from its access point AP. In addition, some applications, such as VoIP, also place additional requirements on the AP and limit the number of devices which can function within a cell. As the number of devices increases, cell sizes must decrease to support the higher density of WLAN clients. Analysis