Description: Despite its support of prioritized services, the IEEE
802.11e Enhanced Distributed Channel Access (EDCA)
cannot guarantee strict QoS required by real-time services
such as voice and video without proper network control
mechanisms. To overcome this deficiency, we first build
an analytical model to derive upper bounds for both delay
means and variations for services of different priorities in
the non-saturated 802.11e WLAN, showing that the QoS requirements
of real-time services can be satisfied if the input
traffic is properly regulated.
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802.11e Qos.pdf
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