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There have been several measurement studies of 802.11 WLANs.
These studies typically use three types of measurement techniques:
WDM (wired monitoring), SNMP and syslogs (AP system logs).
WDM has been used for identifying the typical traffic mix in university
WLANs 10 (10); 8 (8); 7 (7), or public WLANs 1 (1).
SNMP provides information on both traffic volume and the number of
active (associated) users, and has thus been used for both
traffic studies 10 (10); 1 (1); 8 (8) and user mobility
studies 2 (2).
Syslog records detail steps of association, and have been used effectively
for studying user activity patterns 8 (8); 5 (5).
WM techniques have been used by 6 (6); 4 (4) to measure
packet loss and bit error rates in a non-802.11 wireless network.
They used a controlled environment to measure traffic between two wireless stations.
Our work differs in that it examines a production 802.11 network
for MAC traffic characterization and diagnosis.