Mobile communication method and mobile station

Details Mobile communication method and mobile station Mobile communication method and mobile station

H - Electricity

04

W

H04W 12/04 (2009.01) H04W 36/08 (2009.01) H04W 36/10 (2009.01) G06F 21/24 (2006.01) H04L 9/08 (2006.01)

Patent

CA 2725461

The present invention relates to a mobile communication method in which a mobile station performs a handover from a handover source radio base station to a handover target radio base station. The mobile communication method includes the steps of: (A) acquiring, at the handover target radio base station, from the handover source radio base station or a switching center, a key for calculating a first key for generating a certain key used in a communication between the handover target radio base station and the mobile station; and (B) acquiring, at the handover target radio base station, from the switching center, a second key for calculating a first key for generating a certain key used in a communication between a next handover target radio base station and the mobile station.

L'invention porte sur un procédé de transfert pour permettre à une station mobile d'effectuer un transfert d'une station de base radio source de transfert à une station de base radio destination de transfert. Le procédé comprend : une étape A à laquelle la station de base radio destination de transfert acquiert une clé pour calculer une première clé afin de générer une clé prédéterminée utilisée pour une communication entre la station de base radio destination de transfert et la station mobile, à partir de la station de base radio source de transfert ou d'une station de commutation; et une étape B à laquelle la station de base radio destination de transfert acquiert, à partir de la station de commutation, une seconde clé pour calculer la première clé afin de générer la clé prédéterminée utilisée pour une communication entre la station de base destination de transfert suivante et la station mobile.

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