Adaptive and occupancy-based channel selection for unreliable cognitive radio networks
نویسندگان
چکیده
Nous présentons une stratégie dynamique pour le choix de canaux dans un réseau radio cognitif. Notre stratégie se base essentiellement sur l’estimation de l’occupation du canal radio provoquée par l’activité des nœuds primaires plus prioritaires sur les canaux en questions. Notre technique, et grâce à une écoute permanante sur les canaux, dote les nœuds cognitifs de la capacité d’inférer les canaux les plus adaptés à une communication cognitive. En effet, notre stratégie permet d’assurer une fiabilité accrue dans les communications en évitant les canaux surchargés. Par des simulations, nous validons notre contribution en montrant qu’elle assure un taux de paquets remis en succès, dans différents scénarios, largement supérieur au cas où le choix de canaux s’effectue aléatoirement. Par ailleurs, nous montrons également que notre stratégie permet un nombre supérieur de voisins sur chaque canal que le contexte aléatoire. Cela constitue un résultat prometteur en faveur de son utilisation dans un contexte multi-saut en présence d’un algorithme de routage.
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ورودعنوان ژورنال:
- CoRR
دوره abs/1007.0123 شماره
صفحات -
تاریخ انتشار 2009