p-Persistent CMSA

• p = Prob(send|idle)

• E(# stations xmit after idle) = np [n: # total stations ready to send]

• If np > 1, likely secondary collision, so want p < 1/n

• n increases with system load, so want smaller p with high load

• smaller p affects message delay

Previous slide

Next slide

Back to first slide

View graphic version