H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 16/12 (2009.01) H04W 12/06 (2009.01) H04W 16/24 (2009.01) H04W 36/30 (2009.01) H04W 84/12 (2009.01)
Patent
CA 2671892
Disclosed is an apparatus for linking mobile communication devices to wireless networks in underground edifices. Said apparatus comprises a plurality of base stations which are arranged at a spatial distance from one another inside tunnel systems (11, 12), substantially in the direction of the tunnel axes, such that the reception areas (16) of two adjacent base stations (21, 22, 23) overlap (25) as little as possible, all base stations (21, 22, 23) operating on a single common channel. In a method used for said apparatus, the mobile station switches to an adjacent base station when a quality signal drops below a predetermined threshold value.
L'invention concerne un dispositif pour connecter des appareils de communication mobile à des réseaux sans fil dans des constructions souterraines. Ce dispositif comprend plusieurs stations de base qui sont disposées dans des systèmes de tunnel (11, 12) à une distance spatiale les unes des autres dans la direction des axes de tunnel, de manière à établir un chevauchement minimal (25) des zones de réception commune (16) de deux stations de base adjacentes (21, 22, 23), toutes les stations de base (21, 22, 23) fonctionnant sur un canal unique commun. Dans un procédé utilisé avec le dispositif selon l'invention, la station mobile commute vers une station de base adjacente lorsqu'un signal de qualité chute en deçà d'une valeur-seuil prédéterminée.
Cassan Maclean
Licania Gmbh
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