Notation

Explanation

Packet arrival rate during a unit time

Packet arrival rate during a slot time

m

Packet retry limit

n

Total number of devices

x

Payload size

Total x

Total data

Access probability during a slot time

Stationary distribution with backoff stage k, backoff counter j

Channel idle probability

Transmission failed probability

Collision probability

Packet error rate

Contention window of k backoff stage