Dynamic tuning of the contention window minimum (CW min ) for enhanced service differentiation in IEEE 802.11 wireless ad-hoc networks.
L. Gannoune, Stephan Robert · 2004
in 802.11e draft [2] which introduces two main access meth-ods, the Hybrid Coordination Function (HCF) and the Enhanced Distributed Coordination Function (EDCF), renamed in latest 802.11e draft [2] to EDCA (enhanced dis-tributed channel access). PF[ACi] and another uniformly distributed backoff counter out of this new, enlarged CW is drawn, to reduce the probability of a new collision as shown in equation (1):