A Priority Scheme for IEEE 802. 11 DCF Access Method

Abstract

this paper, we propose a method to modify the CSMA/CA protocol such that station priorities can be supported. The method is simple, e#cient and easy to implement in comparison to point coordination function (PCF), another access method in IEEE 802.11 based on access points (base stations). Simulations are conducted to analyze the proposed scheme. The results show that DCF is able to carry the prioritized tra#c with the proposed scheme.