Systems and Methods for Providing Service Migration Between First and Second Cellular Technologies

• US 20100151867A1
• Filed: 11/13/2009
• Published: 06/17/2010
• Est. Priority Date: 08/01/2003
• Status: Active Grant

• Current Assignee: AT&T Mobility II LLC (AT&T, Inc.)
• Original Assignee: AT&T Mobility II LLC (AT&T, Inc.)
• Inventors: Hamadi, Charles Jamile, Tran, Nhan Thanh
• Granted Patent: US 8,254,398 B2
• Time in Patent Office: Days
• US Class Current: 455/445
• CPC Class Codes: H04Q 3/005 Personal communication services, e.g. provisions for portability of subscriber numbers
• CPC Class Codes: H04W 40/02 Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 8/28 Number portability ; Network address portability
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

Systems and methods for a call flow for a mobile directory number (MDN) from a first phone to a second phone which has been intra-service ported. The system includes: a first switch of a first technology; a second switch of a second technology; and a local number portability database (LNP). The LNP stores local routing numbers (LRN) associated with the MDN. The WLNP system determines whether a call, from the first phone, is received by a public switched telephone network (PSTN) or the first switch. If the call is received by the PSTN with the LRN, the call is routed to the second switch based on the LRN. If the call is received by the first switch without the LRN, the first switch queries the LNP for the LRN and the call is routed intra-carrier to the second switch.

Claims

1-13. -13. (canceled)

14. A system for migrating a call flow for a mobile directory number (MDN) from an originating phone to a destination phone which has been intra-service ported, the system comprising:

a first switch for querying a first home location register (HLR), the first switch and the first HLR operating on a first technology;

a second switch for querying a second HLR, the second switch and the second HLR operating on a second technology;

a local number portability database (LNP) that stores a local routing number (LRN) associated with the MDN, the LNP database in communication with the first and second switch; and

an inter-machine trunk (IMT) connecting the first switch to the second switch, the IMT including data translation for translating data back and forth between the first switch and the second switch;

wherein the first switch queries the LNP for the LRN and the call is routed to the second switch.

15. The system of claim 14, further comprising a public switched telephone network (PSTN) in communication with the first switch and the second switch, the PSTN receiving the call and querying the LNP.

16. The system of claim 15, wherein the originating phone is a land line phone.

17. The system of claim 14, wherein the originating phone is a cellular phone.

18. The system of claim 14, wherein the first technology is a GSM technology.

19. The system of claim 14, wherein the second technology is a TDMA technology.

20. A method for migrating a call from an originating phone to a destination phone, the destination phone having a mobile directory number (MDN) intra-service ported from a first switch of a first technology to a second switch of a second technology, the method comprising:

receiving the call from the originating phone;

querying a local number portability database (LNP) for the LRN; and

routing the call to the second switch via an inter-machine trunk (IMT), the IMT including data translation for translating data back and forth between the first switch and the second switch.

21. The method of claim 20, further comprising creating a profile in the LNP based on the intra-service ported MDN.

22. The method of claim 20, further comprising determining that the call is received by a public switched telephone network (PSTN).

23. The method of claim 22, wherein the receiving, querying, and routing are performed by the PSTN.

24. The method of claim 20, further comprising determining that the call is received by the first switch.

25. The method of claim 24, wherein the receiving, querying, and routing are performed by the first switch.

26. The method of claim 20, wherein the first technology is a GSM technology and the second technology is a TDMA technology.

27. A method for migrating a call from an originating phone to a destination phone, the destination phone having a mobile directory number (MDN) intra-service ported from a first switch of a first technology to a second switch of a second technology, the method comprising:

receiving the call from the originating phone;

querying a local number portability database (LNP) for the LRN; and

routing the call to the second switch via an inter-machine trunk (IMT), the IMT including data translation for translating data back and forth between the first switch and the second switch.

28. The method of claim 27, further comprising creating a profile in the LNP based on the intra-service ported MDN.

29. The method of claim 27, further comprising determining that the call is received by a public switched telephone network (PSTN).

30. The method of claim 29, wherein the receiving, querying, and routing are performed by the PSTN.

31. The method of claim 27, further comprising determining that the call is received by the first switch.

32. The method of claim 31, wherein the receiving, querying, and routing are performed by the first switch.

33. The method of claim 27, wherein the first technology is a GSM technology and the second technology is a TDMA technology.