Method for supporting a discontinuous transmission mode in a...

H - Electricity – 04 – B

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Details

H04B 7/155 (2006.01) H04B 7/005 (2006.01) H04B 7/185 (2006.01) H04B 7/26 (2006.01) H04Q 7/38 (2006.01) H04Q 7/30 (2006.01)

Patent

CA 2337678

Disclosed is a method for transmitting a signal from a base station transceiver system (BTS) to a base station controller (BSC) when there is no data transmitted from a mobile station while in discontinuous transmission (DTX) mode, in a mobile communication system. The mobile communication system includes a mobile station for transmitting and receiving data in a predetermined period, a base station transceiver system and a base station controller for controlling the base station transceiver system. Upon detection of the discontinuous transmission mode, it is determined what type of frame was last transmitted from the mobile station, and the present power control information is set according to the type of frame. If it is a null frame, the base station transceiver system sets previous power control information that the base station transceiver system has used for power control of the mobile station before detection of discontinuous transmission mode, to present power control information. There-after, the base station transceiver system transmits a reverse message including the present power control information to the base station controller over a dedicated control channel. If there is data being transmitted between the mobile station and the base station transceiver system at the time where the discontinuous transmission mode is detected, the previous power control information is set to the present power control information.

L'invention concerne un procédé de transmission d'un signal, d'un système de stations de transmission de base (BTS) vers un organe de commande de stations de base (BSC), lorsqu'aucune donnée n'est transmise par une station mobile fonctionnant en mode de transmission discontinu (DTX) dans un système de communication mobile. Le système de communication mobile comprend une station mobile pour transmettre et recevoir des données pendant une période prédéterminée, un système de stations de transmission de base et un organe de commande de stations de base pour commander le système de stations de transmission de base. Lors de la détection du mode de transmission discontinu, on détermine quel type de trame a été transmis en dernier lieu par la station mobile, et les informations de commande de puissance en cours sont fixées en fonction du type de trame. S'il s'agit d'une trame nulle, le système de stations de transmission de base se sert des informations de commande de puissance précédemment utilisées pour commander la puissance de la station mobile avant la détection du mode de transmission discontinu, comme informations de commande de puissance actuelles. Par la suite, le système de stations de transmission de base transmet un message de retour incluant les informations de commande de puissance actuelles à l'organe de commande de stations de base sur un canal de commande spécialisé. Si des données sont transmises entre la station mobile et le système de stations de transmission de base au moment où le mode de transmission discontinu est détecté, les informations de commande de puissance précédentes servent d'informations de commande de puissance actuelles.

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