Method and system for transmit frequency hopping

H - Electricity – 04 – B

Patent

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H04B 1/713 (2011.01) H04W 4/10 (2009.01)

Patent

CA 2659119

A mobile device (110) and combined method (400/500) for frequency hopping is provided. The frequency hopping can combine a receive scanning (400) with a scanning (500) for a transmit frequency for providing automated channel selection. The transmit scanning can include determining whether a push to talk (PTT) is pressed (501), and selecting a transmit frequency from a set of frequency channels (130) based on a measured activity (150) on the set of frequencies. If the PTT (240) is within the hang-time (504), a frequency that is currently active during the hangtime can be selected, else, a frequency having a lowest activity count (506) can be selected for transmitting a communication in response to the PTT.

La présente invention concerne un dispositif mobile (110) et un procédé combiné (400/500) permettant un saut de fréquence. Le saut de fréquence combine un balayage de réception (400) à un balayage (500) de fréquence d'émission pour assurer une sélection de canal automatisée. Le balayage d'émission consiste à déterminer si un bouton de microphone est actionné (501) et à sélectionner une fréquence d'émission dans un ensemble de canaux de fréquences (130) selon une activité mesurée (150) sur le jeu de fréquences. Si le bouton de microphone (240) est utilisé pendant le temps de maintien (504), une fréquence active pendant ce temps peut être sélectionnée; sinon, une fréquence ayant une valeur d'activité inférieure (506) peut être sélectionnée pour transmettre une communication en réponse à l'action.

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