IEEE 802.11 Functions
To connect, the client must go through the following:
Scanning for networks
Includes passive or active scanning mode (or both). Many vendors use both.
- Client tunes to each channel, listens for a period of time, and monitors 802.11 beacon frames (AP transmits beacons by default every 100 milliseconds on a specific RF)
- Client records the RSS of the frame and continues scanning other channels.
- After scanning all RFs, the client decides which AP to join (usually highest RSS or more information eg SNR)