Granted Patent B2

US 10,004,003 · App. 14/403,996 · Granted Jun 19, 2018

Inventors: Michael Brett Wallis (McKinney, TX); Anish Sharma (Richardson, TX)

Assignee: Mavenir Systems, Inc.

H04W36/0022H04W60/04H04W60/06H04W68/00H04W92/02

Abstract

Claims (49)

1. A method comprising:

receiving, at an Internetworking Function (IWF) network node, a Mobility Application Part Unstructured Supplementary Service Data (MAP USSD) message identifying a User Equipment (UE) originated from a USSD application,

the UE associated with a first serving Mobile Switching Center (MSC) distinct from the IWF network node, and

wherein the IWF network node is distinct from a visitor location register (VLR) associated with the first serving MSC;

initiating Circuit Switched Fallback (CSFB) by sending by the IWF network node a paging request to the UE;

receiving, by the IWF network node, a Cancel Location message associated with the UE from a Home Location Register (HLR) indicative of the UE being associated with a second serving MSC distinct from the IWF network node, wherein the IWF network node is distinct from the HLR;

forwarding, by the IWF network node, the MAP USSD message to the UE via the HLR and the second serving MSC;

receiving, by the IWF network node, a MAP USSD response message from the UE via the HLR; and

forwarding, by the HLR, the MAP USSD response message to the USSD application,

wherein the IWF network node connects to a CS network and an Long Term Evolution (LTE) network,

wherein the method comprises a mobile terminating location report procedure, and

wherein the second serving MSC is associated with the UE upon CSFB.

2. The method of claim 1 , further comprising a step of storing information identifying a subscriber.

3. The method of claim 2 , wherein the information identifying the subscriber is stored on the IWF node.

4. The method of claim 2 , wherein the information identifying the subscriber comprises an IMSI (International Mobile Subscriber Identity).

5. The method of claim 2 , wherein the information identifying the subscriber comprises an MSISDN (Mobile Station International Subscriber Directory Number).

6. The method of claim 2 , wherein the information identifying the subscriber comprises an IMSI and a MSISDN.

7. The method of claim 6 , wherein the information identifying the subscriber is stored on the IWF node.

8. A method comprising:

receiving, at an Internetworking Function (IWF) network node, a Mobility Application Part Send Routing Information-Location Services (MAP SRI-LCS) message identifying a User Equipment (UE) originated from a Gateway Mobile Location Center (GMLC),

the UE associated with a first serving Mobile Switching Center (MSC) distinct from the IWF network node, and wherein the IWF network node is distinct from a visitor location register (VLR) associated with the first serving MSC;

initiating Circuit Switched Fallback (CSFB) by sending by the IWF network node a paging request to the UE;

receiving, by the IWF network node, a Cancel Location message associated with the UE from a Home Location Register (HLR) indicative of the UE being associated with a second serving MSC distinct from the IWF network node;

forwarding the SRI-LCS message to the UE via the HLR and the second serving MSC;

receiving, by the IWF network node, a SRI-LCS response message from the HLR;

sending, by the IWF network node, a MAP Provide Subscriber Location (PSL) message to the second serving MSC;

receiving, by the IWF network node, a MAP PSL response message from the second serving MSC; and

forwarding, by the IWF network node, the MAP PSL response message to the GMLC,

wherein the IWF network node connects to a CS network and an Long Term Evolution (LTE) network.

9. The method of claim 8 , wherein the method comprises a mobile terminating location report procedure.

10. The method of claim 9 , wherein the second serving MSC is adsociated with the UE upon CSFB.

11. The method of claim 8 , wherein once the CSFB is complete, the IWF network node acts as another GMLC.

12. The method of claim 8 , further comprising a step of storing information identifying a subscriber.

13. The method of claim 12 , wherein the information identifying the subscriber is stored on the IWF node.

14. The method of claim 12 , wherein the information identifying the subscriber comprises an IMSI (International Mobile Subscriber Identity).

15. The method of claim 12 , wherein the information identifying the subscriber comprises an MSISDN (Mobile Station International Subscriber Directory Number).

16. The method of claim 12 , wherein the information identifying the subscriber comprises an IMSI and a MSISDN.

17. A method comprising:

receiving, at an Internetworking Function (IWF) network node, a Mobility Application Part Provide Subscriber Information (MAP PSI) message identifying a User Equipment (UE) originated from a Home Location Register (HLR),

the UE associated with a first serving Mobile Switching Center (MSC) distinct from the IWF network node, and

wherein the IWF network node is distinct from a visitor location register (VLR) associated with the first serving MSC;

initiating Circuit Switched Fallback (CSFB) by sending by the IWF network node a paging request to the UE;

receiving, by the IWF network node, a Cancel Location message associated with the UE from the HLR indicative of the UE being associated with a second serving MSC distinct from the IWF network node;

sending a MAP Anytime Interrogation (ATI) message to the UE via the HLR and the second serving MSC;

receiving, by the IWF network node, a MAP ATI response message from the HLR; and forwarding, by the IWF network node, information in the MAP ATI response in a MAP PSI response message to the HLR,

wherein the IWF network node connects to a CS network and an Long Term Evolution (LTE) network.

18. The method of claim 17 , further comprising a step of storing information identifying a subscriber.

19. The method of claim 18 , wherein the information identifying the subscriber is stored on the IWF node.

20. The method of claim 18 , wherein the information identifying the subscriber comprises an IMSI (International Mobile Subscriber Identity).

Assignments (22)

Priority Claims (1)

Continuity (4)