GW-WR150N/GW-WR150ND 150Mbps Wireless Router User Manual
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Note:
The advanced wireless setting is only for advanced user. For the common user, do
not change any setting in this page.
WMM Configuration
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WMM Access Categories
At present, WMM defines traffic into 4 access categories.
AC_VO: Voice (highest priority)
AC_VI: Video (high priority)
AC_BE: Best effort (medium priority)
AC_BK: Background (low priority)
802.11 uses DCF (Distributed Coordination Function) scheme of the CSMA/CA
(Carrier Sense Multiple Access / Collision Avoidance) protocol to reduce the
chances of packets collision while one more devices access the wireless media at
the same time. A client wishing to transmit has to first listen to the channel for a
predetermined amount of time so as to check for any activity on the channel. If the
channel is sensed "idle", then the client is permitted to transmit. If the channel is
sensed as "busy", the station has to defer its transmission. The random interval
provides a fair transmission chance for all the devices.