Asignación Distribuida Coordinada de Canales para WLANs con Acceso Oportunista

Abstract

WLANs have a limited number of frequency channels (radio spectrum), where the saturation of these channels in densely populated areas becomes an inevitable problem, and it is imperative to find new processes that enable efficient management of this resource to maintain good performance (operation). In this article is presented an algorithm, based on probabilistic technique 'Simulated Annealing', for channel assignment in a distributed coordinated manner for WLAN networks, by building Minimum Spanning Trees. A process of cost allocation and an analysis of interference levels is performed, the same as it is executed for each access point (AP) of the stage. The objective of this work is to achieve efficient allocation of channels for each AP, either in the ISM band, or opportunistically in a licensed band, which minimizes interference levels for each AP.