MAC Data Services
In this section, MAC data services, which are responsible for carrying out data frame exchanges between WLAN stations, will be presented. First, the MAC data communication protocol will be described, for both non real-time and real-time data traffic. A special type of protocol using RTS and CTS control frames (typically used to reduce collision probability) will then be presented.
Distributed Coordination Function
The fundamental access method used by the MAC for an IEEE 802.11 OFDM WLAN is a distributed control mechanism, wherein each station (i.e., terminal) has a fair chance of accessing the medium. This technique, sometimes called distributed coordination function (DCF), is based on a carrier sense multiple access (CSMA) ...
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