Mobile radio systems

H - Electricity – 04 – Q

Patent

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Details

H04Q 7/30 (2006.01)

Patent

CA 2232006

A cellular radio system comprises radio base stations (A, B, C), each having an allocated number of radio channels. Each radio base station is connected to the rest of the network (BSC, MSC) by a branched network (5, 7a, 7b, etc.). At the branch point H an intermediate switch is provided for connecting channels in the trunk portion (5) to channels in the branches (7a, 7b, etc.). The capacity of the trunk link (5) is less than the total capacity of the base stations (and of their associated branch links (7a, 7b, 7c)). At times when one or more of the base stations (A, B, C) have surplus capacity, that capacity is disabled so that the capacity of the trunk link (5) is not exceeded. The capacity of each base station (A, B, C) may be varied according to predicted or actual demand, provided that the total (non-disabled) capacity of the base stations (A, B, C) does not exceed that of the trunk link (5).

L'invention concerne un système de radiocommunication mobile constitué de stations radio fixes (A, B, C) auxquels un certain nombre de canaux radio-électriques est attribué. Chaque station radio fixe est reliée au reste du réseau (unité de contrôle des stations de base) (BSC), centre de commutation mobile (MSC) par l'intermédiaire d'un réseau ramifié (5, 7a, 7b, etc). Au point d'embranchement H, un système de commutation intermédiaire assure la liaison entre les canaux de la partie de jonction (5), d'une part, et les canaux correspondant aux branches (7a, 7b, etc.) du réseau. La capacité de la liaison inter-urbaine (5) est inférieure à la capacité totale des stations fixes (et à celle des liaisons de branches associées (7a, 7b, 7c)). Il arrive parfois qu'une ou plusieurs stations fixes (A, B, C) ait une capacité excédentaire: l'excédent en question est alors désactivé de sorte que la capacité de la liason inter-urbaine (5) ne soit pas dépassée. La capacité de chaque station fixe (A, B, C) peut varier en fonction de la demande prévue ou réelle, à condition que la capacité totale (hors désactivation) des stations fixes (A, B, C) ne dépasse pas celle de la liaison inter-urbaine (5).

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