Abstract: A method of arranging data protection in a telecommunication system including a first mobile communication network, a second mobile communication network, and a mobile station supporting both of the mobile communication networks is disclosed. The method includes ciphering traffic between the mobile station and the first mobile communication network using a first cipher key; calculating a second cipher key to be used for ciphering traffic between the mobile station and the second mobile communication network in the first mobile communication network when the mobile station operates in the first mobile communication network; transmitting information necessary for calculating the second cipher key from the first mobile communication network to the mobile station when the mobile station operates in the first mobile communication network; and calculating the second cipher key at the mobile station to be used for ciphering traffic between the mobile station and the second mobile communication network.

Abstract: The invention relates to a method and to associated radio access networks and network elements for assigning values of service attributes to transmissions between a user equipment and a radio access network. In order to allow for an improved assignment of values of service attributes, it is proposed that, upon request of such a transmission by a user equipment of a subscriber registered with some radio access network the method comprises determining values of service attributes that are to be used for the transmission requested by said user equipment based on at least one value of at least one service attribute defined by a stored subscriber specific service profile, and based on at least one stored common value of at least one service attribute.

Abstract: The invention relates to a method and to associated radio access networks and network elements for assigning values of service attributes to transmissions between a user equipment and a radio access network. In order to allow for an improved assignment of values of service attributes, it is proposed that, upon request of such a transmission by a user equipment of a subscriber registered with some radio access network the method comprises determining values of service attributes that are to be used for the transmission requested by said user equipment based on at least one value of at least one service attribute defined by a stored subscriber specific service profile, and based on at least one stored common value of at least one service attribute.

Abstract: A method, a system and a mobile station in a system providing services which can be delivered to a user via two different connection types. In order to secure the service delivery, suppression of connection type is used when the connection type does not support the service.