EDCA Contention Simulator

This simulator evaluates TXOP outage duration and outage occurrence interval under legacy EDCA and proposed AC_N variants.

Assumptions

• Single AP uplink contention model.
• All overlapping uplink transmissions collide at the AP.
• Hidden-node probability affects sensing among STAs.
• Full TXOP transmission can be enabled with --full-txop.
• RTS/CTS can be enabled with --enable-rts.

Requirements

pip install numpy pandas matplotlib

Example commands

Legacy BE:

python edca_sim.py --stas 32 --acs AC_BE --txops 10000 --enable-rts --full-txop --no-plot

Proposed AC_N255:

python edca_sim.py --stas 32 --acs AC_N255 --txops 10000 --enable-rts --full-txop --no-plot

Hidden-node case:

python edca_sim.py --stas 32 --acs AC_N255 --txops 10000 --enable-rts --full-txop --hidden-prob 0.1

Outputs

The script writes results to results/<timestamp>_<pid>/, including:

• txop_log.csv: per-TXOP start/end timestamps, STA, AC, RTS usage, duration
• summary.txt: simulation arguments, sensing matrix, and aggregate statistics
• Optional plots if --no-plot is not used