A New Approach to Services Differentiation Between Mobile Terminals of a Wireless LAN

This paper aims to identify the advantages and disadvantages of several mechanisms for service differentiation in mobile terminals of a wireless LAN to establish a better and more efficient network. According to the analysis of available approaches for the quality of service of the IEEE 802.11 standard, this paper is to suggest a new method named DF-DCF "Differentiated Frame-DCF". DF-DCF can be regarded as an implementation of the algorithm EDF (Earliest Deadline First). The system using DF-DCF is considered as a system with time-dependent priorities. The performance of the suggested method in a Network Simulator (NS) environment allowed its validation through a set of testing and simulation scenarios.