LIP6 2001/012:
Rapport de Recherche LIP6 /
LIP6
research reports
6 pages - Juin/June 2001 -
Document en anglais.
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Thème/Team: Objets et Agents pour Systèmes d'Information et de Simulation
Réseaux et Performances
Titre français : Assignation de canaux avec mise en attente des appels de handover dans un système de satellites LEO à empreintes fixes
Titre anglais : Channel Assignment with handover queueing in LEO satellite systems based on an Earth-fixed cell coverage
Abstract : Low-Earth Orbit (LEO) satellite systems are intended to have an important part of the future generation of mobile telecommunication systems. They aim to provide different services to various populations of users. Each class of users requires a certain Quality of Service (QoS) and thus a given part of the shared channel resource. In this paper, LEO satellite systems based on an earth-fixed cell concept are considered, and different channel allocation strategies with handover queuing are discussed. Two channel allocation techniques have been investigated : fixed and dynamic channel allocation FCA and DCA. Moreover, in order to reduce the handover failure probability, we have assumed that handover attempts can be queued. An analytical model has been derived in the FCA case considering handover queuing and different categories of users. Implementation aspects for the DCA scheme have been discussed in comparison with FCA results.
Key-words : LEO, satellite constellations, handover
Publications internes LIP6 2001 / LIP6 research reports 2001