Location management in a mobile telecommunication system
First Claim
1. A method of location management in a mobile telecommunication system comprising mobile stations, at least one core network providing telecommunication services, and a radio access network providing connections between the mobile stations and the core network, and in which system information concerning the location of the mobile station is stored in the radio access network, comprisingtracking in the radio access network of the location of the mobile station to the accuracy of a location area,determining in the core network a reporting area comprising at least one location area,informing the radio access network by the core network of the reporting area determined,receiving at the radio access network a location update from the mobile station,determining by the radio access network based on the location update whether or not the mobile station has moved out of the reporting area, andsending by the radio access network to the core network a report if the mobile station has moved out of the reporting area.
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Abstract
The basic idea of the invention is to separate the location area used in the RAN and the reporting area used when reporting the location of the mobile to the core network. The size of the location area is selected preferably in the RAN based on the services used by the subscriber to optimize the use of radio resources. A reporting area comprises one or a plurality of location areas. The size of a reporting area is selected based on the accuracy of location information needed in the core network. The RAN informs the core network when a subscriber moves out of his current location area. The core network and the radio access network negotiate the size of the reporting area prior to the activation of the service. Additionally, the reporting areas can be renegotiated when the service is in the active state.
19 Citations
24 Claims
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1. A method of location management in a mobile telecommunication system comprising mobile stations, at least one core network providing telecommunication services, and a radio access network providing connections between the mobile stations and the core network, and in which system information concerning the location of the mobile station is stored in the radio access network, comprising
tracking in the radio access network of the location of the mobile station to the accuracy of a location area, determining in the core network a reporting area comprising at least one location area, informing the radio access network by the core network of the reporting area determined, receiving at the radio access network a location update from the mobile station, determining by the radio access network based on the location update whether or not the mobile station has moved out of the reporting area, and sending by the radio access network to the core network a report if the mobile station has moved out of the reporting area.
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19. The radio access network for a mobile telecommunication system comprising mobile stations, at least one core network providing telecommunication services, and a radio access network, providing connections between the mobile stations and the core network, and in which system information concerning the location of the mobile station is stored in the radio access network, the radio access network adapted to
use a location area configuration to track the location of the mobile station on the accuracy of one location area, receive information on a reporting area determined by the core network, receive a location update from the mobile station, determine, based on the location update, whether or not the mobile station has moved out of the reporting area, and send the core network a report if the mobile station has moved out of the reporting area.
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20. The network element for a radio access network of a mobile telecommunication system comprising mobile stations, at least one core network providing telecommunication services, and a radio access network providing connections between the mobile stations and the core network, and in which system information concerning the location of the mobile station is stored in the radio access network, the network element adapted to
use a location area configuration to track the location of the mobile station on the accuracy of one location area, receive information on a reporting area determined by the core network, receive a location update from the mobile station, determine, based on the location update, whether or not the mobile station has moved out of the reporting area, and send the core network a report if the mobile station has moved out of the reporting area.
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21. The core network for a mobile telecommunication system comprising mobile stations, at least one core network providing connections between the mobile stations and the core network, and in which system information concerning the location of the mobile station is stored in a radio access network, and the radio access network uses a location area configuration to track the location of the mobile station on the accuracy of one location area, the core network adapted to
determine a service area comprising at least one location area, inform the radio access network of the reporting area determined, and to receive a report from the radio access network when the mobile station has moved out of the reporting area.
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22. A method, comprising:
- tracking a location of a mobile station in a radio access network with an accuracy of a location area, the radio access network providing connections between mobile stations and a core network providing services to the mobile stations;
determining a reporting area comprising at least one location area; determining a change in the location of the mobile station when the mobile station moves from a first location area to a second location area; reporting to the core network the change in the location of the mobile station only when the mobile station also moves from a first reporting area to a second reporting area; and not reporting to the core network the change in the location of the mobile station when the mobile station has not moved from the first reporting area to the second reporting area, wherein the core network requests that a mobile station authenticates itself when the mobile station moves to a new reporting area. - View Dependent Claims (23, 24)
- tracking a location of a mobile station in a radio access network with an accuracy of a location area, the radio access network providing connections between mobile stations and a core network providing services to the mobile stations;
Specification