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US 9,072,030 B2Granted
Camping in an exclusive cell
AssigneeNokia Technologies Oy
InventorsVeli-Matti Juuti, Juha Back, Tommi Kokkola, Johanna Pekonen
Life of this patent
Estimating the term…
Abstract
In a mobile communications system exclusive location areas comprising exclusive cells are defined in order to separate cells from the mobile stations not belonging to the user group allowed to camp in the cell and still to allow emergency calls for all mobile stations in these cells. During location update it is checked whether the cell belongs to an exclusive location area (202) and if it does, it is determined whether or not the subscriber is allowed to camp in the cell.
Claims6
A method, comprising:
- determining, by a mobile station, that a location area broadcast by a Base Station Subsystem (BSS) has changed and triggering, by the mobile station, a location update procedure when the location area broadcast has changed, the BSS comprising a plurality of cells;
- receiving, by a Mobile Switching Center (MSC), a Location Area Code (LAC) and Location Service Area Identifier (LSA-ID) of one of the cells in the BSS in which the mobile station wants to camp, and an identity of the mobile station;
- checking, by the MSC, whether the received LAC is an Exclusive Access Location Area Code (EA-LAC);
- and
- continuing the location update if the LAC is not an EA-LAC or, if the LAC is an EA-LAC, retrieving the LSA-ID from a Visitor Location Register (VLR), comparing the retrieved LSA-ID with the LSA-ID of the cell received by the MSC and, if there is a match, accepting the location update;
- else rejecting the location update and displaying a message on the mobile terminal that roaming is not permitted by the mobile station in the location area,
- wherein all the cells in the location area are exclusive access cells or all of the cells in the location area are non-exclusive access cells.
4 more elements
Dependencies are inferred from the claim text.