Routing an incoming call to a ported mobile station within a telecommunications network
First Claim
1. A method for retrieving subscriber information associated with a mobile station, said mobile station being assigned to a particular home location register (HLR), said particular HLR storing said subscriber information associated with said mobile station, said method comprising the steps of:
- transmitting a first signal with a mobile station identification number from a telecommunications exchange to a centralized database, said first signal requesting a first network address representing said particular HLR;
determining said first network address by indexing on said mobile station identification number within said centralized database;
transmitting said determining first network address back to said telecommunications exchange;
transmitting a second signal from said telecommunications exchange to a gateway mobile switching center (GMSC) associated with said determined first network address;
transmitting a third signal from said GMSC to said particular HLR using said determined first network address, said third signal requesting said subscriber information from said HLR;
retrieving said subscriber information in response to a reception of said third signal by said HLR; and
transmitting said retrieved subscriber information associated with said mobile station back to said GMSC.
1 Assignment
0 Petitions
Accused Products
Abstract
A centralized database connected to the next to last Service Switching Point (SSP) within a Public Switched Telephone Network (PSTN) interfacing with a ported Public Land Mobile Network (PLMN) stores correlation data correlating a network address representing the new home location register (HLR) associated with a ported mobile station with a mobile identification number representing that particular mobile station. Whenever an incoming signal such as an Initial Address Message (IAM) is received by the next to last SSP, a database query is performed towards the centralized database to retrieve the network address representing the new HLR. The retrieved HLR network address is then utilized as the Called Party Address (CdPn). The original mobile station number is also included into the Generic Address Parameter (GAP) of the routed IAM signal. The modified IAM signal is then routed to the proper Gateway Mobile Switching Center (GMSC) and accordingly forwarded to a mobile switching center (MSC) currently serving the ported mobile station.
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Citations
31 Claims
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1. A method for retrieving subscriber information associated with a mobile station, said mobile station being assigned to a particular home location register (HLR), said particular HLR storing said subscriber information associated with said mobile station, said method comprising the steps of:
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transmitting a first signal with a mobile station identification number from a telecommunications exchange to a centralized database, said first signal requesting a first network address representing said particular HLR; determining said first network address by indexing on said mobile station identification number within said centralized database; transmitting said determining first network address back to said telecommunications exchange; transmitting a second signal from said telecommunications exchange to a gateway mobile switching center (GMSC) associated with said determined first network address; transmitting a third signal from said GMSC to said particular HLR using said determined first network address, said third signal requesting said subscriber information from said HLR; retrieving said subscriber information in response to a reception of said third signal by said HLR; and transmitting said retrieved subscriber information associated with said mobile station back to said GMSC. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for routing a request signal toward a first home location register (HLR) serving a mobile station having an assigned identification number, said mobile station ported from an area served by a second home location register (HLR) to an area served by said first HLR without changing said identification number, said method comprising the steps of:
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storing correlation data in a centralized database, said correlation data correlating said identification number representing said mobile station with a network address representing said first HLR; retrieving said network address representing said first HLR from said centralized database by correlating said identification number with said correlation data in response to an incoming signal identified by said identification number; routing said incoming signal to a gateway mobile switching center(GMSC) associated with said first HLR by using said retrieved network address; and transmitting a request signal from said GMSC to said first HLR using said retrieved network address. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A system for correlating a mobile station with a particular home location register (HLR) within a telecommunications network, said system comprising:
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a telecommunications exchange for routing an incoming signal intended for said mobile station; and a centralized database connected to said telecommunications exchange, said centralized database storing; a first record containing identification data representing said mobile station; and a second record containing a network address representing said particular HLR, and wherein said second record is correlated with said first record when said telecommunications exchange sends a request to said centralized database for said network address, said network address being sent back to said telecommunications exchange. - View Dependent Claims (20, 21, 22, 23)
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24. A system for routing a request signal toward a first home location register (HLR) serving a mobile station, said mobile station ported from an area served by a second home location register to an area served by said first HLR without changing an identification number assigned to said mobile station, said system comprising:
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a centralized database storing correlation data for correlating said identification number assigned to said mobile station with a network address associated with said first HLR; a telecommunications exchange in communication with said centralized database, said telecommunications exchange receiving an incoming signal identified by said identification number, said telecommunications exchange retrieving said network address associated with said first HLR from said centralized database by indexing said identification number within said correction data, said telecommunications exchange routing said incoming signal to a gateway mobile switching center (GMSC) associated with said first HLR by utilizing said retrieved network address; and means for sending a routing request signal from said GMSC to said first HLR using said retrieved network address. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification