Mobility inside a WLAN ‘hotspot’
by link layer functions...
νStation decides that link to its current AP is poor
νStation uses scanning function to find another AP
− or uses information from previous scans
ν Station sends Reassociation
Request to new AP
νIf Reassociation Response is successful
−then station has roamed to the new AP
−else station scans for another AP
ORFDOGLVWULEXWLRQQHWZRUN
νIf AP accepts Reassociation Request
−normally old AP is notified through Distribution System
−AP indicates Reassociation to the Distribution System
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