Method for controlling connections to a mobile station
First Claim
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1. A communication network comprising a user equipment, an access network and a plurality of core networks, wherein said communication network is arranged to:
- communicate separate ciphering parameters to said access network from said at least two of said core networks; and
select one of said separate ciphering parameters and use the selected ciphering parameter for ciphering at least both a communication between said user equipment and a first core network of said plurality of core networks and a communication between said user equipment and a second core network of said plurality of core networks,wherein said user equipment is configured to be simultaneously in communication with at least two of said plurality of core networks.
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Abstract
The present invention is a novel and improved method for managing in a single location the ciphering keys and algorithms used for encrypting or ciphering the communications of a specific mobile station with multiple core networks or core network entities. Further another aspect of the invention is that the management location is movable as the mobile station moves within the radio access network.
58 Citations
18 Claims
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1. A communication network comprising a user equipment, an access network and a plurality of core networks, wherein said communication network is arranged to:
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communicate separate ciphering parameters to said access network from said at least two of said core networks; and select one of said separate ciphering parameters and use the selected ciphering parameter for ciphering at least both a communication between said user equipment and a first core network of said plurality of core networks and a communication between said user equipment and a second core network of said plurality of core networks, wherein said user equipment is configured to be simultaneously in communication with at least two of said plurality of core networks. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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receiving at an access network separate ciphering parameters from at least a first core network and a second core network of a plurality of core networks; and selecting one of said separate ciphering parameters and using the selected ciphering parameter for ciphering at least both a communication between a user equipment and said first core network of said plurality of core networks via said access network and a simultaneous communication between said user equipment and said second core network of said plurality of core networks via said access network. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An access network which is arranged to:
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receive separate ciphering parameters from at least two of a plurality of core networks; and select one of said separate ciphering parameters and use the selected ciphering parameter for ciphering at least both a communication between a user equipment and a first core network of said plurality of core networks via said access network and a simultaneous communication between said user equipment and a second core network of said plurality of core networks via said access network.
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13. A device which is arranged to:
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receive separate ciphering parameters from at least two of a plurality of core networks; and select one of said separate ciphering parameters and use the selected ciphering parameter for ciphering at least both a communication between a user equipment and a first core network of said plurality of core networks via an access network and a simultaneous communication between said user equipment and a second core network of said plurality of core networks via said access network, wherein said device is one of an access network element and a ciphering controller. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification