Method and arrangement for logging on a mobile unit at a...

Details Method and arrangement for logging on a mobile unit at a... Method and arrangement for logging on a mobile unit at a...

H - Electricity

04

M

H04M 1/725 (2006.01) H04B 1/713 (2006.01)

Patent

CA 2300128

The invention concerns a method and a device for wireless data transmission between a mobile telephone (2, 3, 11) and a fixed station (1), in time frames (Zx), on a carrier frequency forming part of several carrier frequencies (fx). The fixed station (1) and the mobile telephone (11) comprise each a device (12, 13) for transmitting a predetermined sequence which predefines the carrier frequencies (fx) of the time frames (Zx), the carrier frequencies of two successive time frames being different, and a HF module (4, 5) for transmitting data in the time frames (Zx), the carrier frequencies (fx) of the time frames (Zx) being each predefined by the predetermined frequency transmitted by the output device (12, 13).

L'invention concerne un procédé et un dispositif permettant la transmission sans fil de données entre une partie mobile (2, 3, 11) et une station fixe (1), dans des tranches de temps (Zx), sur une fréquence porteuse faisant partie de plusieurs fréquences porteuses (f¿x?). La station fixe (1) et la partie mobile (11) comprennent chacune un dispositif (12, 13) servant à l'émission d'une séquence prédéterminée qui prédéfinit les fréquences porteuses (f¿x?) des tranches de temps (Zx), les fréquences porteuses de deux tranches de temps successives étant différentes, ainsi qu'un module HF (4, 5) servant à la transmission des données dans des tranches de temps (Zx), les fréquences porteuses (f¿x?) des tranches de temps (Zx) étant chacune prédéfinies par la fréquence prédéterminée émise par le dispositif de sortie (12, 13).

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