# Wireless packet airtime estimate
# Scope: Packet payload plus supplied fixed overhead; retries omitted.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

payloadBits = 800
overheadBits = 200
bitRate = 1000000 s^-1
packetsPerSecond = 100 s^-1

airtime := (payloadBits+overheadBits)/bitRate [s]
utilization := airtime*packetsPerSecond

check channel utilization budget: utilization <= 0.2

scenario alternative: payloadBits = 640