Conception et évaluation des performances d’un algorithme de sélection de réseau dans les environnements sans fils hétérogènes.

Abstract

Since the 1990s, networking technology and mobile radio have experienced phenomenal advances. This technological evolution has taken place simultaneously with the network, the application and the user's need. The rapid evolution of technology has led to the emergence of a heterogeneous environment where coverage is guaranteed by the coexistence of several types of networks. The challenge that this design prevents is knowing how to move seamlessly between multiple networks. A user in a wireless network environment has a decision to make regarding which access networks to use because this decision affects the quality of data transfers. In this context, we worked on the proposal of a selection algorithm in heterogeneous environments where the main role is to allow à user to connect with the best network with the best performance data. Therefore, we proposed a new algorithm based on the quality of service comprising several selection criteria. We used the OMNet++ network simulator to evaluate our proposal by studying the behavior of a mobile node in a heterogeneous environment and interpreting the results of the simulation.