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1. User A listens and determines that no other users are transmitting. User A transmits
his frame and advertises the frame duration.
2. User B has a frame to transmit. He must wait until user A’s frame is completed, and
then wait until the DIFS period has expired.
3. B waits a random backoff time before attempting to transmit.
4. While user B is waiting, user C has a frame to transmit. He listens and detects that no
one is transmitting. User C waits a random time, which is shorter than User B’s random
5. User B transmits a frame and advertises the frame duration.
6. User C must now wait the duration of user B’s frame plus the DIFS time before
attempting to transmit again