Management and control frames

sent periodically from an AP to announce its presence and provide the SSID and othe preconfigured parameters
beacon
the sending device sends an authentication frame to the AP containing its identity
authentication
sent from wireless client wanting to terminate connection from another wireless client
deauthentication
sent from a wireless client, it enables the AP to allocate resources and synchronize. carries SSID and data rate
association request
sent from a wireless client when it requires information from another client
probe request