Traffic Prioritization for Carrier Sense Multiple Access with Enhanced Collision Avoidance
Jaume Barceló, Boris Bellalta, Cristina Cano, Anna Sfairopoulou, Miquel Oliver, Han Zuidweg · 2009
Carrier sense multiple access with enhanced collision avoidance (CSMA/ECA) is a simple MAC protocol for wireless local area networks that significantly outperforms CSMA/CA. This paper addresses traffic prioritization in CSMA/ECA using different minimum contention windows for different traffic classes. The conditions under which the collision-free operation is possible are presented and expressions for the steady-state channel efficiency are provided. Simulation results show that CSMA/ECA improves the channel utilization achieved by all traffic classes whenever the conditions for collision-free operation are satisfied.