Aironet BR2000-E Uživatelský manuál stáhnout pdf (Strana 47)

CSE5501: MOBILE & DISTRIBUTED COMPUTING SYSTEMS

Lecture 3: Wireless LANs

47

Access

Point

A

Access

Point

B

Steps to Re-association:

Adapter listens for beacons

from APs.

Adapter evaluates AP

beacons, selects best AP.

Adapter sends association

request to selected AP (B).

AP B confirms association

and registers adapter.

Roaming from Access Point A

to Access Point B

AP B informs AP A of

re-association with AP B.

AP A forwards buffered packets

to AP B and de-registers adapter.

WLAN’s Re-association Process –

Passive Scanning

WLAN’s

WLAN’s

Re

Re

-

-

association Process

association Process

–

–

Passive Scanning

Passive Scanning

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