System including mobile radio station and base radio station

Details System including mobile radio station and base radio station System including mobile radio station and base radio station

H - Electricity

04

Q

H04Q 7/22 (2006.01) H04B 7/005 (2006.01) H04Q 7/30 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2206318

A mobile station which wants to start communication with a base station transmits a communication slot assignment request to the base station at a sufficiently low transmission speed at which no transversal filter is required. The base station assigns a communication slot and transmits the information regarding the communication slot assignment to the mobile station at a sufficiently low transmission speed at which no transversal filter is required. Upon receiving the information, the mobile station transmits a training sequence to the base station at a high speed by using the assigned communication slot. The base station calculates the optimum tap coefficient in a transversal filter from the training sequence held by the base station itself and from the actually received signals by means of an adaptive equalizing mechanism and transmits the optimum tap coefficient to the mobile station at a sufficiently low transmission speed at which no transversal filter is required. The base station sets the tap coefficient in the transversal filter and starts high-speed communication with the base station.

Un poste mobile qui veut commencer à communiquer avec un poste de base transmet une demande d'attribution d'une fenêtre de communication au poste de base avec une vitesse de transmission suffisamment basse pour qu'aucun filtre transversal ne soit nécessaire. Le poste de base attribue une fenêtre de communication et transmet l'information concernant l'attribution de la fenêtre de communication au poste mobile à une vitesse de transmission suffisamment basse pour qu'aucun filtre transversal ne soit nécessaire. A la réception de l'information, le poste mobile transmet une fréquence d'apprentissage au poste de base à haute vitesse en utilisant la fenêtre de communication attribuée. Le poste de base calcule le coefficient de dérivation optimum dans un filtre transversal à partir de la séquence d'apprentissage contenue dans le poste de base lui-même et à partir des signaux effectivement reçus au moyen d'un mécanisme d'égalisation adaptatif et transmet le coefficient de dérivation optimum au poste mobile à une vitesse de transmission suffisamment basse pour qu'aucun filtre transversal ne soit nécessaire. Le poste de base détermine le coefficient de dérivation dans le filtre transversal et commence une communication haute vitesse avec le poste de base.

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