
CSE5501: MOBILE & DISTRIBUTED COMPUTING SYSTEMS
Lecture 3: Wireless LANs
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Steps to Association:
AP sends Probe Response
AP sends Probe Response
Client evaluates AP
Client evaluates AP
response, selects best AP.
response, selects best AP.
Client sends association
Client sends association
request to selected AP (A).
request to selected AP (A).
AP A confirms association
AP A confirms association
and registers client.
and registers client.
Access
Access
Point
Point
A
A
Access
Access
Point
Point
B
B
Initial connection to an Access Point
Client sends probe
Client sends probe
Client sends authentication
Client sends authentication
request to selected AP (A).
request to selected AP (A).
AP A confirms authentication
AP A confirms authentication
and registers client.
and registers client.
WLAN’s Association Process
- Passive Scanning
WLAN’s
WLAN’s
Association Process
Association Process
-
-
Passive Scanning
Passive Scanning
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