Methods and systems for auto-correlating message transfer part (MTP) priority and internet protocol (IP) type of service in converged networks

• US 7,532,647 B2
• Filed: 07/14/2004
• Issued: 05/12/2009
• Est. Priority Date: 07/14/2004
• Status: Active Grant

• Current Assignee: Tekelec Global, Inc. (Oracle Corporation)
• Original Assignee: Tekelec
• Inventors: Delaney, Robert John, Eichler, Todd
• Primary Examiner(s): Rao; Seema S
• Assistant Examiner(s): WONG, XAVIER S
• Application Number:
  US10/890,779
• Publication Number:
  US 20060013264A1
• Time in Patent Office: 1,763 Days
• Field of Search: 370/522, 370/395.21, 370/395.42, 370/467, 370444-449, 370/455, 370/496, 370/524, 370/528
• US Class Current: 370/524
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/2491 Mapping quality of service [QoS] requirements between different networks
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/161 Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
• CPC Class Codes: H04L 69/169 Special adaptations of TCP, UDP or IP for interworking of IP based networks with other networks protocols for interworking, protocol conversion H04L69/08
• CPC Class Codes: H04Q 3/0025 Provisions for signalling
• CPC Class Codes: H04Q 3/0045 involving hybrid, i.e. a mixture of public and private, or multi-vendor systems

Abstract

Methods and systems for automatically correlating signaling message priority and IP priority are disclosed. A priority level of a signaling message may be determined based on a priority parameter in the signaling message or a user based priority. The signaling message is encapsulated in an IP packet. A priority level in the IP packet is set based on the priority level determined for the signaling message.

Claims

1. A method of auto-correlating signaling message priority and an Internet protocol (IP) priority in a converged network environment, comprising:

(a) determining a priority level of a signaling message by ascertaining a value of a priority parameter in the signaling message used to indicate a priority of the signaling message in a protocol distinct from Internet Protocol;

(b) encapsulating the signaling message in an IP packet;

(c) setting a priority level of the IP packet based on the priority level determined for the signaling message; and

(d) transmitting the IP packet to an IP network, wherein the signaling message comprises an SS7 message signaling unit (MSU) and wherein determining the priority level of the signaling message by ascertaining a value of a priority parameter includes determining the priority level based on a message transfer part (MTP) priority parameter.

2. The method of claim 1 wherein determining the priority level of the signaling message by ascertaining a value of a priority parameter in the signaling message includes determining the priority level based on at least one of a calling party address and an originating point code in the SS7 MSU.

3. The method of claim 1 wherein determining the priority level of the signaling message by ascertaining a value of a priority parameter in the signaling message and includes determining the priority level based on at least one of a calling party address, originating point code, and subsystem number in the SS7 MSU.

4. The method of claim 1 wherein the message comprises an SS7 network management message and wherein determining the priority level of the signaling message by ascertaining a value of a priority parameter in the signaling message includes determining the priority level based on a message transfer part (MTP) priority parameter in the network management message.

5. The method of claim 1 wherein the message comprises an SS7 call setup message and wherein determining the priority level of the signaling message includes determining the priority level based on the MTP priority parameter in the call setup message.

6. The method of claim 1 wherein the message comprises an SS7 database query message and wherein determining the priority level of the signaling message includes determining the priority level based on the MTP priority parameter in the database query message.

7. The method of claim 1 wherein the signaling message comprises a non-SS7 call setup message and wherein determining a priority level of the signaling message includes determining a priority level of the signaling message based on at least one of a priority parameter and a user parameter in the non-SS7 call setup message.

8. The method of claim 1 wherein the signaling message comprises a non-SS7 network management message and wherein determining a priority level of the signaling message includes determining a priority level of the signaling message based on at least one of a priority parameter and a user parameter in the non-SS7 network management message.

9. The method of claim 1 wherein the signaling message comprises a SIP message and wherein determining a priority level of the signaling message includes determining a priority level of the signaling message based on at least one of a priority parameter and a user parameter in the SIP message.

10. The method of claim 1 wherein setting the priority level of the IP packet includes setting bits in a type of service (TOS) octet of a header portion of the IP packet.

11. The method of claim 10 wherein setting bits in the TOS octet includes setting precedence bits.

12. The method of claim 10 wherein setting bits in the TOS octet includes setting type of service bits.

13. The method of claim 10 wherein setting bits in the TOS octet includes setting precedence bits and type of service bits.

14. The method of claim 1 comprising changing the priority level of the signaling message based on at least one parameter in the signaling message.

15. The method of claim 1 wherein setting the priority level of the IP packet includes consulting a lookup table.

16. A method for mapping priority for an SS7 network management message to a priority parameter in an IP message, the method comprising:

(a) receiving an SS7 network management message;

(b) reading a priority parameter from the SS7 network management message, wherein the priority parameter is used to indicate a priority of the SS7 network management message in a protocol distinct from Internet Protocol;

(c) mapping the priority parameter in the SS7 network management message to an IP priority parameter;

(d) encapsulating the SS7 network management message in an IP packet including the IP priority parameter; and

(e) transmitting the IP encapsulated SS7 network management message, wherein the network management message comprises an SS7 message signaling unit (MSU) and wherein mapping the priority parameter includes examining an SS7 message transfer part (MTP) priority parameter to determine the priority of the SS7 MSU.

17. A signaling gateway comprising:

(a) a first interface module operatively coupled to a first network, the first interface module being capable of receiving a signaling message from the first network;

(b) a priority determination process for determining the priority of the received signaling message by ascertaining a value of a priority parameter in the signaling message used to indicate a priority of the signaling message in a protocol distinct from Internet Protocol; and

(c) a second interface module operatively coupled to the priority determination process and to a second network, the second interface module being capable of encapsulating the received signaling message in a packet and transmitting the packet on the second network, wherein the priority determination process is adapted to set priority information in the packet based on the priority determined for the received signaling message, wherein the signaling message comprises an SS7 message signaling unit (MSU) and the priority determination process is adapted to examine an SS7 message transfer part (MTP) priority parameter to determine the priority of the SS7 MSU.

18. The signaling gateway of claim 17 wherein the signaling message comprises an SS7 message signaling unit (MSU) and the priority determination process is adapted to examine calling party information in the SS7 MSU to determine the priority of the SS7 MSU.

19. The signaling gateway of claim 17 wherein the signaling message comprises an SS7 network management message and the priority determination process is adapted to examine the MTP priority parameter to determine the priority of the SS7 network management message.

20. The signaling gateway of claim 17 wherein the signaling message comprises a non-SS7 call setup message and wherein the priority determination process is adapted to examine a calling party parameter in the non-SS7 signaling message to determine the priority of the non-SS7 signaling message.

21. The signaling gateway of claim 17 wherein the priority determination process is adapted to change the priority parameter in the signaling message.

22. The signaling gateway of claim 17 wherein the priority determination process is adapted to examine a lookup table to determine the priority of the message.

23. The signaling gateway of claim 22 wherein the lookup table includes user-defined priority information.

24. The signaling gateway of claim 23 wherein the lookup table includes user defined priority information based on at least one of a calling party address and originating point code in the received signaling message.

25. The signaling gateway of claim 23 wherein the lookup table includes user defined priority information based upon a calling party subsystem number in the received signaling message.

26. The signaling gateway of claim 23 wherein the lookup table includes MTP priority values for changing the priority of the signaling message.

27. The signaling gateway of claim 17 wherein the priority determination process resides on the second interface module.

28. The signaling gateway of claim 17 comprising a database services module operatively associated with the first and second interface modules wherein the priority determination process is located on the database services module.