MULTIPLE IMSI CONNECTIONS

• US 20100075668A1
• Filed: 09/25/2008
• Published: 03/25/2010
• Est. Priority Date: 09/25/2008
• Status: Active Grant

• Current Assignee: Lemko Corporation
• Original Assignee: Lemko Corporation
• Inventors: Pan, Shaowei
• Granted Patent: US 7,979,066 B2
• Time in Patent Office: Days
• US Class Current: 455/433
• CPC Class Codes: H04W 8/06 Registration at serving network Location Register, VLR or user mobility server

Abstract

A system is disclosed that includes a first multiple International Mobile Subscriber Identity (IMSI) location register (MILR) module. The first MILR module includes user information associated with a plurality of mobile subscribers. For each of the mobile subscribers, the user information includes a first IMSI number and a first Mobile Directory Number (MDN). The first IMSI number and the first MDN are associated with a first country. The user information includes a second IMSI number and a second MDN. The second IMSI number and the second MDN are associated with a second country. The user information also includes active location information for each of the mobile subscribers.

Claims

1. A system comprising:

a first home location register module;

a first visitor location register module;

a first community location register module; and

a first multiple International Mobile Subscriber Identity (IMSI) location register (MILR) module, wherein the first MILR module includes;

user information associated with a plurality of mobile subscribers, and wherein for each of the plurality of mobile subscribers, the user information includes;

a first IMSI number and a first Mobile Directory Number (MDN), wherein the first IMSI number and the first MDN are associated with a first country;

a second IMSI number and a second MDN, wherein the second IMSI number and the second MDN are associated with a second country; and

active location information.

2. The system of claim 1, wherein a telephone call to the first MDN from a caller in the first country is routed to the second MDN via an Internet Protocol (IP) network.

3. The system of claim 2, wherein the telephone call to the first MDN from the caller in the first country is routed to the second MDN via the IP network when a mobile subscriber associated with the first MDN is located in the second country.

4. The system of claim 1, wherein the first MDN is a local telephone number in the first country.

5. The system of claim 1, wherein the second MDN is a local telephone number in the second country.

6. The system of claim 1, wherein the first home location register module, the first visitor location register module, the first community location register module, and the first MILR module are stored at a first distributed mobile architecture server located in the first country.

7. The system of claim 6, further comprising a second distributed mobile architecture server located in the second country.

8. The system of claim 7, wherein the second distributed mobile architecture server located in the second country comprises a second MILR module.

9. The system of claim 7, wherein a telephone call to the first MDN from a caller in the first country is routed from the first distributed mobile architecture server to the second distributed mobile architecture server via an IP network.

10. The system of claim 1, wherein the user information further comprises a third IMSI number and a third MDN, wherein the third IMSI number and the third MDN are associated with a third country.

11. The system of claim 1, wherein a first set of three digits of the first IMSI number represents a first mobile country code (MCC) associated with a first wireless carrier of the first country.

12. The system of claim 11, wherein a second set of three digits of the first IMSI number represents a first mobile network code (MNC) associated with the first country.

13. The system of claim 1, wherein a first set of three digits of the second IMSI number represents a second mobile country code (MCC) associated with a second wireless carrier of the second country.

14. The system of claim 13, wherein a second set of three digits of the second IMSI number represents a second mobile network code (MNC) associated with the second country.

15. The system of claim 1, wherein when a mobile subscriber associated with the first MDN is located in the first country, a telephone call from the first MDN to a telephone located in the second country is routed from a first distributed mobile architecture server located in the first country to a second distributed mobile architecture server located in the second country via an Internet Protocol (IP) network.

16. The system of claim 1, wherein when a mobile subscriber associated with the second MDN is located in the second country, a telephone call from the second MDN to a telephone located in the first country is routed to a first distributed mobile architecture server located in the first country from a second distributed mobile architecture server located in the second country via an Internet Protocol (IP) network.

17. A method of routing telephone calls from a first country to a second country via an Internet Protocol (IP) network, the method comprising:

receiving a telephone call to a first Mobile Directory Number (MDN) in a first country; and

when the mobile subscriber associated with the first MDN is located in a second country, routing the telephone call to the second country via the IP network.

18. The method of claim 17, further comprising determining a location of a mobile subscriber associated with the first MDN.

19. The method of claim 17, wherein the telephone call is received at a first distributed mobile architecture server located in the first country.

20. The method of claim 19, wherein the telephone call is routed from the first distributed mobile architecture server located in the first country to a second distributed mobile architecture server located in the second country.

21. The method of claim 17, wherein when a first International Mobile Subscriber Identity (IMSI) number is active, the mobile subscriber associated with the first MDN is located in the first country, and when a second IMSI number is active, the mobile subscriber associated with the first MDN is located in the second country.

22. The method of claim 21, wherein when the first IMSI number is active, the mobile subscriber associated with the first MDN is located in the first country, and the first MDN is an active local telephone number in the first country and the second MDN is an active local telephone number in the second country.

23. The method of claim 21, wherein when the second IMSI number is active, the mobile subscriber associated with the second MDN is located in the second country, and the second MDN is an active local telephone number in the first country and the second MDN is an active local telephone number in the second country.

24. The method of claim 21, wherein the first IMSI number and the second IMSI number are stored at a Subscriber Identity Module (SIM) card of a device of the mobile subscriber.

25. The method of claim 24, wherein the SIM card further comprises a plurality of IMSI numbers, wherein each of the plurality of IMSI numbers is associated with a particular country.

26. The method of claim 24, wherein the SIM card enables flat roaming over countries (FroC).

27. The method of claim 24, wherein one of the plurality of IMSI numbers is automatically selected based on an active location of the mobile subscriber.