Systems and methods for providing service migration between first and second cellular technologies

• US 8,254,398 B2
• Filed: 11/13/2009
• Issued: 08/28/2012
• Est. Priority Date: 08/01/2003
• Status: Expired due to Fees

• Current Assignee: AT&T Mobility II LLC (AT&T, Inc.)
• Original Assignee: AT&T Mobility II LLC (AT&T, Inc.)
• Inventors: Tran, Nhan Thanh, Hamadi, Charles Jamile
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): Choi, Eunsook
• Application Number:
  US12/618,587
• Publication Number:
  US 20100151867A1
• Time in Patent Office: 1,019 Days
• Field of Search: None
• US Class Current: 370/401
• 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. A system for migrating a call for a mobile directory number (MDN) from an originating phone to a destination phone which has been intra-service ported from a first mobile switching center of a first technology to a second mobile switching center of a second technology, the first mobile switching center and the second mobile switching center residing within a mobile service carrier'"'"'s own system, the system comprising:

a first mobile switching center;

receiving a negative return result from a first home location register (HLR) upon querying the first HLR, the negative return result including at least one of a mismatch and an Unassigned Directory Number (DN), the first HLR operating on the first technology;

receiving a local routing number (LRN) for the second mobile switching center upon querying a local number portability (LNP) database storing the LRN associated with the MDN, the LNP database in communication with the first mobile switching center and the second mobile switching center; and

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

wherein the first technology is a time division multiple access (TDMA) technology and the second technology is a Global System for Mobile Communications (GSM) GAIT technology homed in an HLR on the TDMA technology.

2. The system of claim 1, further comprising a public switched telephone network (PSTN) in communication with the first mobile switching center and the second mobile switching center, the PSTN receiving the call and querying the LNP database.

3. The system of claim 2, wherein the originating phone is a land line phone.

4. The system of claim 1, wherein the originating phone is a cellular phone.

5. A method for migrating a call received from an originating phone to a destination phone, the destination phone having a mobile directory number (MDN) intra-service ported from a first mobile switching center of a first technology to a second mobile switching center of a second technology, the first mobile switching center and the second mobile switching center residing within a mobile service carrier'"'"'s own system, the method comprising:

receiving a negative return result from a first home location register (HLR) upon querying the first HLR, the negative return result including at least one of a mismatch and an Unassigned Directory Number (DN), the first HLR operating on the first technology;

receiving a local routing number (LRN) for the second mobile switching center upon querying a local number portability (LNP) database storing the LRN associated with the MDN, the LNP database in communication with the first mobile switching center and the second mobile switching center; and

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

wherein the first technology is a time division multiple access (TDMA) technology and the second technology is a Global System for Mobile Communications (GSM) GAIT technology homed in an HLR on the TDMA technology.

6. The method of claim 5, further comprising creating a profile in the LNP database based on an intra-service ported MDN.

7. The method of claim 5, further comprising determining that the call is received by a public switched telephone network (PSTN).

8. The method of claim 7, wherein the receiving, querying, and routing are performed by the PSTN.

9. The method of claim 5, further comprising determining that the call is received by the first mobile switching center.

10. The method of claim 9, wherein the receiving, querying, and routing are performed by the first mobile switching center.

11. A method for wireless local number portability, the method comprising:

receiving a call from an originating phone at a destination phone, the destination phone having a mobile directory number (MDN) intra-service ported from a first mobile switching center of a first technology to a second mobile switching center of a second technology the first mobile switching center and the second mobile switching center residing within a mobile service carrier'"'"'s own system;

receiving a negative return result from a first home location register (HLR) upon querying the first HLR, the negative return result including at least one of a mismatch and an Unassigned Directory Number (DN), the first HLR operating on the first technology;

receiving a local routing number (LRN) for the second mobile switching center upon querying a local number portability (LNP) database storing the LRN associated with the MDN, the LNP database in communication with the first mobile switching center and the second mobile switching center; and

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

wherein the first technology is a time division multiple access (TDMA) technology and the second technology is a Global System for Mobile Communications (GSM) GAIT technology homed in an HLR on the TDMA technology.

12. The method of claim 11, further comprising creating a profile in the LNP database based on the intra-service ported MDN.

13. The method of claim 11, further comprising determining that the call is received by a public switched telephone network (PSTN).

14. The method of claim 13, wherein the receiving, querying, and routing are performed by the PSTN.

15. The method of claim 11, further comprising determining that the call is received by the first mobile switching center.

16. The method of claim 15, wherein the receiving, querying, and routing are performed by the first mobile switching center.