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Method for associating one directory number with two mobile stations within a mobile telecommunications network
| Details |
Inventors: Boltz, David; Westbrook, Bret;
Assignee: Ericsson Inc. (Research Triangle Park, NC)
Primary Examiner: Vo; Nguyen
Assistant Examiner:
Attorney, Agent or Firm: Jenkens & Gilchrist, P.C.
A home location register (HLR) associated with a particular mobile subscription correlates two different international mobile subscriber identity (IMSI) numbers with a particular mobile subscriber integrated service digital network (MSISDN) number. When an incoming call connection is received towards that MSISDN number, the HLR makes a determination as to which one of the two mobile stations associated with the two IMSI numbers is active. The incoming call connection is then forwarded to the active mobile station. In case both mobile stations are active, the received incoming call connection is rerouted to the mobile station preassigned as a primary mobile station. |
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DETAILED DESCRIPTION The present invention discloses a method and apparatus for correlating a single MSISDN number with two International Mobile Subscriber Identity (IMSI) numbers, each associated with a mobile station.
An initial incoming call connection is received by a gateway mobile switching center (GMSC) associated with the dialed directory number (MSISDN number).
The GMSC then transmits a signal requesting routing instructions to a home location register (HLR) associated with the dialed directory number.
The HLR, in turn, determines whether the received directory number is associated with more than one IMSI number.
If the received directory number is associated with only one IMSI number, the rerouting of the incoming call connection is processed in a conventional manner to a mobile station associated with that IMSI number.
However, if there are two mobile stations or IMSI numbers associated with the dialed directory number, a determination is then made as to which mobile station is currently activated.
The received incoming call is then rerouted to the activated mobile station.
If both mobile stations are currently activated, the mobile station preassigned as the primary mobile station is then identified and the incoming call connection is thereafter rerouted to the primary mobile station.
As another embodiment of the present invention, in case one of the mobile stations attempts to dial the other mobile station associated with the same MSISDN number, the HLR determines that a first IMSI number associated with the calling party mobile station and a second IMSI number associated with the called party mobile station are both correlated with the dialed MSISDN number.
As an illustration, a determination is made that the calling party mobile station is associated with the first IMSI number.
In response, the received incoming call connection is routed to the mobile station associated with the second IMSI number.
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