How does 802.11g differ from 802.11b and what are the advantages of 802.11g?
With a maximum link rate of 54 Mbps and theoretical maximum TCP and UDP data rates of 24.4 Mbps and 30.5 Mbps, respectively, 802.11g should provide a significant increase in throughput over 802.11b. While this is true in ideal conditions, tests have shown that due to the inherent low reliability of the medium used (open air with a variety of interference factors), while 802.11g provides a significant speed and throughput increase in “clean” environments, it provides only a slight advantage as distance and / or interference increase. Another important aspect in overall network performance is the handling of control frames, which establish the link between clients and APs, are used to authenticate clients, to maintain the connection, and to terminate (or disassociate) the connection.
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