Systems and methods to select peered border elements for an IP multimedia session based on quality-of-service

• US 8,520,663 B2
• Filed: 02/26/2008
• Issued: 08/27/2013
• Est. Priority Date: 02/26/2008
• Status: Expired due to Fees

• Current Assignee: SBC Knowledge Ventures LP
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Ku, Bernard, Jackson, James, Yasrebi, Mehrad
• Primary Examiner(s): Nawaz, Asad
• Assistant Examiner(s): HAMEL, JOEL A
• Application Number:
  US12/037,602
• Publication Number:
  US 20090213837A1
• Time in Patent Office: 2,009 Days
• Field of Search: 370352-356, 370/395.21, 370/401
• US Class Current: 370/352
• CPC Class Codes: H04L 47/12 Avoiding congestion; Recovering from congestion
• CPC Class Codes: H04L 47/24 Traffic characterised by specific attributes, e.g. priority or QoS
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/80 Responding to QoS

Abstract

Systems and methods to select peered border elements for a communication session based on Quality-of-Service are disclosed. In particular, an example method for peered border element assignment is disclosed, comprising determining a composite Quality-of-Service result based on a plurality of Quality-of-Service parameters associated with a communication session, querying a telephone number mapping server for a status of each of a plurality of peered border elements, and assigning the communication session to be handled by one of the plurality of peered border elements based on the composite Quality-of-Service result and the status of each of the plurality of peered border elements.

Claims

1. A method for assigning a plurality of peered border elements, comprising:

determining a composite Quality-of-Service parameter of a communication session based on weighting a plurality of Quality-of-Service parameters of the communication session including a grade of service parameter of the communication session and a traffic type parameter of the communication session, the grade of service parameter including an attempted performance range and an expected performance range of the communication session, the grade of service parameter being based on a level of service purchased for a device that is an endpoint of the communication session, and the traffic type parameter being defined by a type of application using the communication session;

querying a telephone number mapping server for a status of each of the peered border elements;

assigning the communication session to be handled by one of the peered border elements based on the composite Quality-of-Service parameter and the status of each of the peered border elements; and

generating a Quality-of-Service authorization token to reserve network resources associated with the assigned one of the peered border elements.

2. A method as defined in claim 1, wherein the communication session comprises a voice-over-Internet protocol session.

3. A method as defined in claim 2, wherein the voice-over-Internet protocol session comprises a telephone call.

4. A method as defined in claim 1, wherein the status comprises real-time network conditions.

5. A method as defined in claim 1, wherein the Quality-of-Service parameters comprise a preferred communication mode parameter.

6. A method as defined in claim 1, further comprising assigning a second communication session to be handled by one of the peered border elements based on a second composite Quality-of-Service parameter prior to assigning the first communication session, based on relative values of the first composite Quality-of-Service parameter and the second composite Quality-of-Service parameter.

7. A method as defined in claim 1, further comprising at least one of creating, modifying, and using a subscriber profile based on the grade of service parameter, the composite Quality-of-Service parameter being based on the subscriber profile.

8. A method as defined in claim 1, further comprising partitioning the plurality of peered border elements into sets based on the grade of service parameter, the communication session to be handled by one of the peered border elements from one of the sets selected based on the composite Quality-of-Service parameter and the respective statuses of the sets.

9. A method as defined in claim 1, wherein the Quality-of-Service parameters further comprise a presence mode parameter, the presence mode parameter to indicate whether a device associated with a called party of the communication session is available to be called.

10. A system to assign a communication session to one of a plurality of peered border elements associated with a service provider, the system comprising:

a telephone number mapping database to store a list of at least some of the peered border elements in the plurality of peered border elements;

an operations support system to prioritize the peered border elements in the list based on a respective status of the peered border elements;

a composite Quality-of-Service parameter generator to determine a composite Quality-of-Service parameter of the communication session by weighting a plurality of Quality-of-Service parameters of the communication session including a grade of service parameter of the communication session and a traffic type parameter of the communication session, the grade of service parameter including an attempted performance range and an expected performance range of the communication session, the grade of service parameter being based on a level of service purchased for a device that is an endpoint of the communication session, and the traffic type parameter being defined by a type of an application using the communication session;

a call server to select one of the peered border elements to handle the communication session based on the prioritized list and the composite Quality-of-Service parameter of the communication session;

a proxy server to generate a Quality-of-Service authorization token to reserve network resources associated with the selected one of the peered border elements; and

a processor to implement at least one of the telephone number mapping database, the operations support system, the composite Quality-of-Service parameter generator, the call server, and the proxy server.

11. A system as defined in claim 10, wherein the communication session comprises a voice-over-Internet protocol session.

12. A system as defined in claim 10, wherein the Quality-of-Service parameters comprise at least one of a preferred communication mode and a presence mode status.

13. A system as defined in claim 10, further comprising a home subscriber server to at least one of create, modify, and use a subscriber profile based on the grade of service parameter, the call server to select one of the peered border elements based on the subscriber profile.

14. A system as defined in claim 10, wherein the call server selects a peered border element from a group of peered border elements based on the grade of service parameter.

15. A method to process a communication session, the method comprising:

accessing a prioritized list of peered border elements;

determining a composite Quality-of-Service parameter by weighting a plurality of Quality-of-Service parameters of the communication session including a grade of service parameter of the communication session and a traffic type parameter of the communication session, the grade of service parameter including an attempted performance range and an expected performance range of the communication session, the grade of service parameter being based on a level of service purchased for a device that is an endpoint of the communication session, and the traffic type parameter being defined by a type of an application using the communication session;

selecting a peered border element from the prioritized list of peered border elements based on the composite Quality-of-Service parameter; and

generating a Quality-of-Service authorization token to reserve network resources associated with the selected one of the peered border elements.

16. A method as defined in claim 15, wherein the communication session comprises a voice-over-Internet protocol session.

17. A method as defined in claim 15, wherein the Quality-of-Service parameters further comprise at least one of a preferred communication mode and a presence mode status.

18. An apparatus, comprising:

a processor; and

a memory comprising machine readable instructions which, when executed, cause the processor to at least;

generate a composite Quality-of-Service parameter of a communication session by weighting a plurality of Quality-of-Service parameters of the communication session including a grade of service parameter of the communication session and a traffic type parameter of the communication session, the grade of service parameter including an attempted performance range and an expected performance range of the communication session, the grade of service parameter being based on a level of service purchased for a device that is an endpoint of the communication session, and the traffic type parameter being defined by a type of an application using the communication session;

query a telephone number mapping server for a status of each of a plurality of peered border elements;

assign the communication session to be handled by one of the peered border elements based on the composite Quality-of-Service parameter and the status of each of the peered border elements; and

generating a Quality-of-Service authorization token to reserve network resources associated with the assigned one of the peered border elements.

19. An apparatus as defined in claim 18, wherein the instructions are further to cause the processor to receive a list of peered border elements.

20. An apparatus as defined in claim 18, wherein the instructions are further to cause the processor to notify the peered border element to which the communication session is assigned.

21. An apparatus as defined in claim 18, wherein the Quality-of-Service parameters comprise at least one of a preferred communication mode and a presence mode status.