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Measurement-based admission control in UMTS

Commande de l’admission, à partir de mesures, dans l’umts

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Abstract

In this paper, we develop an efficient Call Admission Control (cac) algorithm forumts systems. We first introduce the expressions that we developed for Signal-to-Interference (sir) for both uplink and downlink, to obtain a novelcac algorithm that takes into account, in addition tosir constraints, the effects of mobility, coverage as well as the wired capacity behind the base station, for the uplink, and the maximal transmission power of the base station, for the downlink. As of its implementation, we investigate the measurement-based approach as a means to predict future, both handoff and new, call arrivals and thus manage different priority levels depending on a tunable coefficient. Compared to classicalcac algorithms, ourcac mechanism achieves better performance in terms of outage probability and QoS management.

Résumé

Dans cet article, on développe un algorithme de commande de l’admission des appels pour les systèmesumts. On introduit d’abord les expressions du rapport signal utile/signal sur brouillage (sir) pour les liaisons montantes et descendantes, pour obtenir un algorithme d’admission qui prenne en compte non seulement les contraintessir mais aussi les effets de mobilité, de couverture, de capacité des liaisons filaires au-delà de la station de base pour la liaison montante, et de puissance de transmission maximale de la station de base pour la liaison descendante. Du point de vue de son implémentation, on étudie une approche fondée sur des mesures comme moyen de prédire les arrivées des appels (nouveaux ou provenant de transferts) et gérer ainsi différents niveaux de priorité en fonction d’un coefficient ajustable. Lorsqu’on le compare aux algorithmes classiques, notre mécanisme de commande d’admission obtient de meilleures performances en termes de gestion de la qualité de service et de probabilité de panne.

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Elayoubi, SE., Chahed, T., Tlais, M. et al. Measurement-based admission control in UMTS. Ann. Télécommun. 59, 1433–1445 (2004). https://doi.org/10.1007/BF03179729

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  • DOI: https://doi.org/10.1007/BF03179729

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