Mobile radio communication system and fixed and mobile units...

Details Mobile radio communication system and fixed and mobile units... Mobile radio communication system and fixed and mobile units...

H - Electricity

04

B

H04B 7/26 (2006.01) H04Q 7/24 (2006.01) H04Q 7/32 (2006.01) H04Q 7/36 (2006.01)

Patent

CA 2142702

In a mobile communication system of the present invention, a cordless base unit LBU is connected to a wired subscriber line SL. The base unit LBU detects a radio channel assigned to a cell other than a cell where the base unit LBU is located, among radio channels assigned to the cells of a cellular radio communication system. This radio channel is used as a radio channel for a cordless call. On the other hand, a cellular cordless telephone CCT is provided with a mode switch. When a cordless mode is designated by the mode switch, a radio channel for a cordless call is detected, as with the case of the base unit LBU. At the time of the cordless call, a transmission power level of the cellular cordless telephone CCT is set at a weak level smaller than that for a cellular call.

Un système mobile de radiocommunications comporte une unité de base sans fil (LBU) raccordé à des lignes d'abonnés cablés (SL). Cette unité de base (LBU) détecte un canal radio affecté à une cellule autre que celle où l'unité est installée, parmi tous les canaux radio affectés aux cellules d'un système cellulaire de radiocommunications, ce canal radio détecté étant utilisé pour les appels sans fil. En outre, chaque combiné téléphonique cellulaire sans fil (CCT) comporte un commutateur de mode et lorsqu'on l'utilise pour sélectionner un mode sans fil, il détecte le canal radio réservé aux appels sans fil tout comme le fait l'unité de base (LBU). De plus, lorsqu'on établit des appels sans fil, le niveau de puissance d'émission du combiné téléphonique (CCT) est réglé à un niveau plus faible que lorsqu'on établit un appel cellulaire.

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