Specifications

Altitude 35x0 Access Point Product Reference Guide 23
An MU can roam within a coverage area by switching access points. Roaming occurs when:
● Unassociated MU attempts to associate or reassociate with an available access point
● Supported rate changes or the MU finds a better transmit rate with another access point
● RSSI (received signal strength indicator) of a potential access point exceeds the current access point
● Ratio of good-transmitted packets to attempted-transmitted packets falls below a threshold.
An MU selects the best available access point and adjusts itself to the access point direct-sequence
channel to begin association. Once associated, the access point begins forwarding frames addressed to
the target MU. Each frame contains fields for the current direct-sequence channel. The MU uses these
fields to resynchronize to the access point.