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QoS-aware handover control in current and future wireless/mobile networks

Un mécanisme de gestion des transferts intercellulaires basé sur des contraintes de qualité de service dans les réseaux sans fil et mobiles

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Abstract

In this article we propose to enhance a handover management in a QoS and 4G based environments by providing a handover decision mechanism that considers QoS and other policies constraints. We introduce a policy based handover by combining the mobility management with the policy based architecture in order to achieve handovers that are triggered not only on the signal strength basis, but also on policy constraints such as cost, resource availability or load balancing. The policy based architecture will provide the handover triggering mechanism and the decision support related to the best next cell where the mobile node will move to. We also introduce mobility parameters in the Service Level Specification (sls) that specifies the handover type, the accepted handover packet loss, and the accepted handover delay. Based on thesesls mobility parameters, the QoS service classes can be mapped to the smooth handover (minimum packet loss), the fast handover (minimum delay), or the seamless handover (fast and smooth).

Résumé

Cet article propose une amélioration de la gestion des transferts intercellulaires en introduisant un mécanisme de décision qui considère des contraintes telles que les besoins en Qualité de Service (QdS), les préférences de l’utilisateur, la politique du fournisseur d’accès, etc. Pour cela, un nouveau concept est proposé nommé transfert à base de règles (Policy based Handover). Ce concept est le résultat de la combinaison d’une architecture de gestion de la mobilité et de l’architecture de gestion réseaux à base de politiques. Cette dernière va supporter le mécanisme de décision du transfert basé non seulement sur l’affaiblissement du signal comme dans le mécanisme de décision classique mais aussi sur les autres contraintes citées précédemment. Cet article décrit également un ensemble de paramètres de mobilité à introduire dans la description d’un niveau de service (sls) tels que le type de transfert, le nombre acceptable de paquets perdus et le délai acceptable. Sur la base de ces paramètres, une correspondance entre les besoins de QdS et les paramètres du transfert sera définie pour assurer un transfert rapide, un transfert à minimum de perte de paquets ou un transfert à la fois rapide et à minimum de perte.

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Correspondence to Hakima Chaouchi.

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Chaouchi, H. QoS-aware handover control in current and future wireless/mobile networks. Ann. Télécommun. 59, 731–746 (2004). https://doi.org/10.1007/BF03179695

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  • DOI: https://doi.org/10.1007/BF03179695

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