Method and device in a mobile telecommunications system

Details Method and device in a mobile telecommunications system Method and device in a mobile telecommunications system

H - Electricity

04

Q

H04Q 7/38 (2006.01)

Patent

CA 2282335

The present invention relates to a method and an apparatus in a mobile telecommunications system for the re-establishment of a speech connection, especially one that risks being interrupted prematurely. A parameter (Q) indicating the quality of the traffic channel (TCH) on which the speech connection is implemented, is compared to a predetermined value (Q1). If the parameter (Q) is lower than said value (Q1) the speech connection (340) is parked temporarily on a dedicated control channel (DCCH) of high quality. When a traffic channel (TCH) again becomes idle (360) the speech connection is handed over (370) to this channel, which may either be associated with the base station originally serving the speech connection or another base station in the mobile telecommunications system.

L'invention concerne un procédé et un dispositif destinés à un système de télécommunications mobiles permettant le rétablissement d'une communication téléphonique, notamment d'une communication risquant d'être interrompue prématurément. Un paramètre (Q) indiquant la qualité du canal de trafic (TCH) sur lequel la communication téléphonique est effectuée, est comparé à une valeur (Q¿1?) déterminée. Si le paramètre (Q) est inférieur à cette valeur donnée (Q¿1?), la communication téléphonique (340) est provisoirement mise en instance sur un canal de commande (DCCH) dédié de haute qualité. Lorsqu'un canal de trafic (TCH) redevient disponible (360), la communication téléphonique est commutée (370) sur ce canal qui peut être associé à la station de base desservant initialement la communication téléphonique ou bien à une autre station de base du système de télécommunications mobile.

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