Appendix O-A · Animation

CSMA/CA: The 802.11 Birthday Problem in Motion

5
Stations
0
Received
0
Collisions
0
Attempts
0%
Utilisation
B=?
Next TX
Collision Rate
0%
P(collision) = 1 − k!·NCk / Nk = 0% (4 slots, 4 stations)
5
MCS 10
MCS 1
STA 1
200 tx/s
CWmin 15 / CWmax 15
Upward bursts = AMPDU aggregates. Downward pulses = 802.11 Block ACK. PER includes collisions and MCS decode failures.