MAC Layer

Asynchronous Data Service (DCF)

• CSMA/CA.

• RTS/CTS.

Timing-controlled service (PCF)

• Polling.

Inter-frame spacing (IFS)

• DIFS (distributed), for the node to start transmitting.

• PIFS (point), used by PCF for network access.

• SIFS (short), between packets of the same flow.