Location updating in a mobile communication system
First Claim
1. A mobile communication system, comprising:
- a plurality of mobile stations;
a plurality of base stations;
a plurality of base station controllers;
a plurality of mobile exchanges;
a plurality of visitor location registers for respective service areas which are divided into location areas;
each of said visitor location registers maintaining subscriber and location data of mobile subscribers visiting its respective service area;
a plurality of mobile stations arranged to perform a location updating when moving from any one location area into another location area, of said location areas;
at least one sub-location register for a particular sub-area in the service area of at least one said visitor location register;
said sub-location register being arranged to forward a first location updating of a said mobile station, made upon arriving into said sub-area, to the visitor location register of the service area of which said sub-area belongs, in order to update location data in the respective visitor location register and to copy at least some subscriber data from the respective visitor location register to said sub-location register; and
said sub-location register being arranged to independently handle the location updatings of the respective mobile station within said sub-area subsequent to said first location updating, in such a manner that the location of the respective mobile station is updated only in said sub-location register.
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Accused Products
Abstract
Location updating is provided in a mobile communication system which visitor location registers, each of which maintains the subscriber and location data of mobile subscribers visiting its service. In addition, there are sub-location registers for a particular sub-area of the service area of a visitor location register. A sub-location register is arranged to forward the first location updating of a mobile station arriving into the sub-area to the visitor location register to the service area of which the sub-area belongs, in order to update the location data of the visitor location register and to copy the necessary subscriber data from the visitor location register to the sub-location register. The sub-location register is also arranged to independently handle the subsequent location updatings of the mobile station in the sub-area in such a manner that the location of the mobile station is updated only in the sub-location register.
312 Citations
15 Claims
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1. A mobile communication system, comprising:
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a plurality of mobile stations; a plurality of base stations; a plurality of base station controllers; a plurality of mobile exchanges; a plurality of visitor location registers for respective service areas which are divided into location areas;
each of said visitor location registers maintaining subscriber and location data of mobile subscribers visiting its respective service area;a plurality of mobile stations arranged to perform a location updating when moving from any one location area into another location area, of said location areas; at least one sub-location register for a particular sub-area in the service area of at least one said visitor location register; said sub-location register being arranged to forward a first location updating of a said mobile station, made upon arriving into said sub-area, to the visitor location register of the service area of which said sub-area belongs, in order to update location data in the respective visitor location register and to copy at least some subscriber data from the respective visitor location register to said sub-location register; and said sub-location register being arranged to independently handle the location updatings of the respective mobile station within said sub-area subsequent to said first location updating, in such a manner that the location of the respective mobile station is updated only in said sub-location register. - View Dependent Claims (2, 3, 4)
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5. A location updating method in a mobile communication system having a plurality of mobile stations, a plurality of base stations, a plurality of base station controllers, a plurality of mobile exchanges, and a plurality of visitor location registers for respective service areas which are divided into location areas, each of said visitor location registers maintaining subscriber and location data of mobile subscribers visiting its respective service area, and at least one sub-location register for a particular sub-area in a respective said service area of at least one respective said visitor location register, said method comprising the steps of:
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performing by a said mobile station of a location updating when moving from one said location area into another said location area; directing location updatings arriving from said particular sub-area to the respective said sub-location register; forwarding a first location updating of said mobile station in said particular sub-area further to the respective said visitor location register to the respective said service area to which said sub-area belongs; updating the respective said visitor location register and copying at least some subscriber data from the respective said visitor location register to said sub-location register; and handling subsequent location updatings of said mobile station in said sub-area in such a manner that the location of said mobile station is updated only in said sub-location register. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A mobile communication system, comprising:
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a plurality of mobile stations; a plurality of base stations; a plurality of base station controllers; a plurality of mobile exchanges; a plurality of visitor location registers for respective service areas which are divided into location areas;
each of said visitor location registers maintaining subscriber and location data of mobile subscribers visiting its respective service area;a plurality of mobile stations arranged to perform a location updating when moving from any one location area into another location area, of said location areas, at least one sub-location register for a particular sub-area in the service area of at least one said visitor location register;
said sub-location register being connected to a said base station controller via a first interface and to said visitor location register via a second interface;said sub-location register being arranged to forward a first location updating of a said mobile station, made upon arriving into said sub-area, to the visitor location register of the service area of which said sub-area belongs, in order to update location data in the respective visitor location register and to copy at least some subscriber data from the respective visitor location register to said sub-location register; and said sub-location register being arranged to independently handle the location updatings of the respective mobile station within said sub-area subsequent to said first location updating, in such a manner that the location of the respective mobile station is updated only in said sub-location register.
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15. A location updating method in a mobile communication system having a plurality of mobile stations, a plurality of base stations, a plurality of base station controllers, a plurality of mobile exchanges, and a plurality of visitor location registers for respective service areas which are divided into location areas, each of said visitor location registers maintaining subscriber and location data of mobile subscribers visiting its respective service area, and at least one sub-location register for a particular sub-area in a respective said service area of at least one respective said visitor location register, said sub-location register being connected to a respective said base station controller via a first interface and to a respective said visitor location register via a second interface, said method comprising the steps of:
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performing by a said mobile station of a location updating when moving from one said location area into another said location area; directing location updatings arriving from said particular sub-area to the respective said sub-location register; forwarding a first location updating of said mobile station in said particular sub-area further to the respective said visitor location register to the respective said service area to which said sub-area belongs; updating the respective said visitor location register and copying at least some subscriber data from the respective said visitor location register to said sub-location register; and handling subsequent location updatings of said mobile station in said sub-area in such a manner that the location of said mobile station is updated only in said sub-location register.
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Specification