Alfa Network R36 User Manual page 36

W -F M
I I ULTIMEDIA
The 3G Mobile Wireless Router implements Quality of Service (QoS) using the Wi-
Fi Multimedia (WMM) standard. Using WMM, the access point is able to prioritize
traffic and optimize performance when multiple applications compete for wireless
network bandwidth at the same time. WMM employs techniques that are a subset
of the developing IEEE 802.11e QoS standard and it enables access points to
interoperate with both WMM-enabled clients and other devices that may lack any
WMM functionality. WMM defines four access categories (ACs): voice, video, best
effort, and background. These categories correspond to traffic priority levels and
are mapped to IEEE 802.1D priority tags. The direct mapping ofthe four ACs to
802.1D priorities is specifically intended to facilitatebinteroperability with other
wired network QoS policies. While the four ACs are specified for specific types of
traffic, WMM allows the priority levels to be configured to match any network-
wide QoS policy. WMM also specifies a protocol that access points can use to
communicate the configured traffic priority levels to QoS-enabled wireless clients.
The Wi-Fi Multimedia section on the Wireless Settings Advanced page allows you
to enable WMM and set detailed QoS parameters.
◆
WMM — Sets the WMM operational mode on the access point. When enabled, the
QoS capabilities are advertised to WMM-enabled clients in the network. WMM must be
supported on any device trying to associate with the access point. Devices that do not
support this feature will not be allowed to associate with the access point.
(Default: Enabled)
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