A new approach to services differentiation between mobile terminals of a wireless LAN

This study 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, the objective of 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. Simulation results have shown that the DF-DCF method is better suited for mobile nodes in a wireless communication network. KeywordsService Differentiation, Wireless LAN, mobility, DCF, DF-DCF, NS.