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4 CONCLUSIONS
In the present work a laboratory setup arrangement
was planned and implemented, that permitted
systematic performance measurements of available
access point equipments (RBTR2 from Enterasys)
for Wi-Fi (IEEE 802.11b, g) in WEP point-to-point
links.
Through OSI level 4, TCP throughput, jitter and
percentage datagram loss were measured and
compared for each standard. The best TCP
throughput was found for 802.11g. The jitter data
are on average slightly higher for 802.11g than for
802.11b. Generally, the percentage datagram loss
data agree reasonably well for both standards.
At OSI level 7, the best FTP performance was
for 802.11g. This result shows the same trends found
for TCP throughput.
Generally, the results measured for WEP links
agree reasonably well, within the experimental
errors, with corresponding data obtained for open
links.
Additional performance measurements either are
under way or are planned using several equipments
to permit several comparisons, not only in laboratory
but also in outdoor environments involving, mainly,
medium range links.
ACKNOWLEDGEMENTS
Supports from University of Beira Interior and FCT
(Fundação para a Ciência e a Tecnologia)/POCI2010
(Programa Operacional Ciência e Inovação) are
acknowledged. We acknowledge Enterasys
Networks for their availability.
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