System and Method for Virtual Roaming of Mobile Communication Devices
First Claim
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1. A method for virtual roaming of a mobile device between a local mobile network and a home mobile network, wherein the mobile device features a SIM card for communication with each of the local mobile network and home mobile network, and wherein the mobile device is associated with a subscription to the home mobile network, the method comprising:
- Initiating communication between the mobile device and the local mobile network;
Transmitting a first IMSI from the SIM card to the local mobile network by the mobile device;
Identifying the home mobile network according to said first IMSI;
Transmitting a second IMSI and a Ki;
Receiving said second IMSI and said Ki by the home mobile network;
Authenticating the mobile device according to said second IMSI and said Ki by the home mobile network; and
Associating said first IMSI of the mobile device with a local network MSISIDN of the local mobile network, such that the mobile device receives and/or performs telephonic communication directed to said local network MSISIDN.
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Abstract
A method and system for virtual roaming for mobile communication devices. The mobile communication device may preferably roam between any two or more mobile communication networks, optionally in different countries.
99 Citations
24 Claims
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1. A method for virtual roaming of a mobile device between a local mobile network and a home mobile network, wherein the mobile device features a SIM card for communication with each of the local mobile network and home mobile network, and wherein the mobile device is associated with a subscription to the home mobile network, the method comprising:
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Initiating communication between the mobile device and the local mobile network; Transmitting a first IMSI from the SIM card to the local mobile network by the mobile device; Identifying the home mobile network according to said first IMSI; Transmitting a second IMSI and a Ki; Receiving said second IMSI and said Ki by the home mobile network; Authenticating the mobile device according to said second IMSI and said Ki by the home mobile network; and Associating said first IMSI of the mobile device with a local network MSISIDN of the local mobile network, such that the mobile device receives and/or performs telephonic communication directed to said local network MSISIDN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24)
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18. The method of 2, wherein said telephonic communication comprises an SMS (short message service) message and wherein said second IMSI is associated with a home network MSISDN, the method further comprising:
- transmitting said SMS message to said home network MSISDN;
receiving said SMS message by a SMSC at the home mobile network;
determining a current location of the mobile device as being outside of the home mobile network;
transmitting said SMS message to said SRVNO; and
passing said SMS message from said SRVNO to the mobile device.
- transmitting said SMS message to said home network MSISDN;
Specification