Application of TCAP criteria in SCCP routing

• US 6,577,723 B1
• Filed: 07/13/2000
• Issued: 06/10/2003
• Est. Priority Date: 07/13/2000
• Status: Expired due to Fees

• Current Assignee: AT&T Mobility II LLC (AT&T, Inc.)
• Original Assignee: AT&T Wireless Services Incorporated (AT&T, Inc.)
• Inventors: Mooney, Christopher
• Primary Examiner(s): Hong, Harry S.
• Application Number:
  US09/615,485
• Time in Patent Office: 1,062 Days
• Field of Search: 370/352, 370/353, 370/354, 370/355, 370/356, 370/401, 370/410, 370/466, 370/467, 370/469, 370/522, 379/219, 379/220.01, 379/221.08, 379/230, 455/432, 455/433, 455/552
• US Class Current: 379/221.08
• CPC Class Codes: H04Q 3/0025 Provisions for signalling
• CPC Class Codes: H04W 40/00 Communication routing or communication path finding
• CPC Class Codes: H04W 8/12 between location registers or mobility servers
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A method for routing messages in a telecommunications network is disclosed. The method includes receiving a Signaling Connection Control Part (SCCP) message and determining the type of upper layer protocol employed in the SCCP message. The method also includes routing the SCCP message in response to the determined type of upper layer protocol.

Claims

1. A method for routing messages in a telecommunications network, comprising:

receiving a Signaling Connection Control Part (SCCP) message;

determining a type of upper layer protocol employed in the SCCP message; and

routing the SCCP message in response to the determined type of upper layer protocol.

2. The method of claim 1, wherein determining the type of upper layer protocol includes examining the Transaction Capabilities Application Part (TCAP) of the SCCP message.

3. The method of claim 1, wherein determining the type of upper layer protocol includes determining the type of Transaction Capabilities Application Part (TCAP) employed in the SCCP message.

4. The method of claim 3, wherein determining the type of TCAP includes determining a bit pattern in the TCAP of the SCCP message.

5. The method of claim 4, wherein determining a bit pattern in the TCAP of the SCCP message includes examining the first two bits in the TCAP.

6. The method of claim 1, wherein the type of upper layer protocol is selected from the group consisting of American Standard National Standards Institute (ANSI) and International Telecommunication Union-Telecommunication (ITU).

7. The method of claim 1, wherein routing the message includes routing the message to a destination associated with the determined upper layer protocol type.

8. The method of claim 7, wherein the message is routed to an American National Standards Institute (ANSI) Home Location Register (HLR) in response to the message employing an ANSI based Transaction Capabilities Application Part (TCAP) and being routed to an General Packet Radio Service (GPRS) HLR in response to the message employing International Telecommunication Union (ITU) TCAP.

9. The method of claim 1, further comprising:

comparing a global title present in the message with a general routing table before determining a type of upper layer protocol.

10. The method of claim 9, wherein determining a type of upper layer protocol is performed in response to not finding the global title in the general routing table.

11. The method of claim 1, wherein a global title in the message is compared to a routing table associated with the determined upper layer protocol type.

12. The method of claim 11, wherein the message is routed to a destination address associated with the determined upper layer protocol type in response to finding the global title in the routing table.

13. The method of claim 1, wherein receiving the SCCP message includes receiving the SCCP message at a Signaling Transfer Point (STP).

14. The method of claim 1, wherein receiving the SCCP message includes receiving the SCCP message at a gateway.

15. A method for routing a message in a network, comprising:

receiving a Signaling Connection Control Part (SCCP) message;

determining a type of upper layer protocol employed in the SCCP message in response to a determination that a global title address is not listed within a first routing table;

consulting a second routing table associated with the determined upper layer type; and

searching the second routing table for the global title address.

16. The method of claim 15, wherein the message is routed to a destination address associated with the determined upper layer protocol type in response to finding the global title in the second routing table.

17. A method for routing messages in a telecommunications network, comprising:

receiving a Signaling Connection Control Part (SCCP) message;

determining a type of upper layer protocol employed in the SCCP message; and

processing the SCCP message in response to the determined type of upper layer protocol.

18. The method of claim 17, wherein determining the type of upper layer protocol includes determining the type of Transaction Capabilities Application Part (TCAP) employed in the SCCP message.

19. The method of claim 17, wherein processing the SCCP message in response to the determined type of upper layer protocol includes assigning the SCCP message to a particular global title translation type associated with the determined upper layer protocol type.

20. The method of claim 17, wherein processing the SCCP message in response to the determined type of upper layer protocol includes assigning the SCCP message to a particular global title translation type associated with the determined upper layer protocol type and a type of global title employed in the SCCP message.

21. The method of claim 19, wherein assigning the message to a particular global title translation type includes placing the assigned global title translation type in a translation type field of a called party address.