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Signaling gateway with multiple IMSI with multiple MSISDN (MIMM) service in a single SIM for multiple roaming partners

  • US 7,505,769 B2
  • Filed: 08/13/2004
  • Issued: 03/17/2009
  • Est. Priority Date: 08/13/2003
  • Status: Expired due to Fees
First Claim
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1. A mobile communications system, the system comprising:

  • a plurality of Visited Public Mobile Networks (VPMNs), including at least one Foreign Public Mobile Network (FPMN); and

    a Home Public Mobile Network (HPMN) having a Home Location Register (HLR), the HPMN having at least one HPMN subscriber with an associated Subscriber Identity Module (SIM), the HPMN comprising a single signaling gateway for providing to each HPMN subscriber an International Mobile Subscriber Identity (IMSI) in the SIM and a corresponding Mobile Subscriber Integrated Services Digital Services Number (MSISDN) to operate in each of the at least one FPMNs,wherein the HPMN and each FPMN have a roaming agreement and an arrangement to support subscribers of Multiple IMSI Multiple MSISDN service (MIMM),wherein the single signaling gateway is configured to assign multiple IMSIs to a single MIMM SIM in a MIMM subscriber device,wherein the MIMM SIM is associated with multiple MSISDNs corresponding to the multiple IMSIs of the MIMM SIM, andwherein each IMSI of the multiple IMSIs is associated with a different network, including at least one FPMN.

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