802.11e

The 802.11 has physical standards of a, b, and g that provide supplementary
QoS support to the MAC layer for your LAN applications. This
is provided for service classes with managed levels of QoS for the following
applications: data, voice, and video.
802.11e provides useful features and functionality for making a distinction
between various data streams. WLAN manufacturers use QoS
as a feature as a distinction in their products, but the down side is that
many elements are still proprietary until the standard is set.
These products will only be successful when the 802.11e standard
becomes more defined and products start to roll out in early 2003. However,
the prices of these initial product offerings won’t become reasonable
until late 2003 or even early 2004.