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Wireless LAN CSMA/CA Sequence
A wireless client does the following:
- Listens to the channel to see if it is idle, i.e. no other traffic currently on the channel
- Sends a ready to send (RTS) message the AP to requesting dedicated access
- Receives a clear to send (CTS) message from the AP granting access to send
- Waits a random time interval then restarts the process if no CTS message received
- Transmits the data
- Acknowledges all transmissions
If a wireless client does not receive an acknowledgment, it assumes a collision occurred and restarts the process