Layer three quality of service aware trigger

• US 20030069018A1
• Filed: 09/27/2001
• Published: 04/10/2003
• Est. Priority Date: 09/27/2001
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Takeshita, Atsushi, Matta, Johnny M.
• Granted Patent: US 7,245,915 B2
• Time in Patent Office: Days
• US Class Current: 455/436
• CPC Class Codes: H04L 41/5009 Determining service level performance parameters or violations of service level contracts, e.g. violations of agreed response time or mean time between failures [MTBF]
• CPC Class Codes: H04L 43/0829 Packet loss
• CPC Class Codes: H04L 43/0852 Delays
• CPC Class Codes: H04L 43/087 Jitter
• CPC Class Codes: H04L 43/0882 Utilisation of link capacity
• CPC Class Codes: H04L 45/26 Route discovery packet
• CPC Class Codes: H04L 45/302 Route determination based on requested QoS
• CPC Class Codes: H04Q 2213/13034 A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/13098 Mobile subscriber
• CPC Class Codes: H04Q 2213/13166 Fault prevention
• CPC Class Codes: H04Q 2213/13204 Protocols
• CPC Class Codes: H04Q 2213/13335 Simulation, emulation
• CPC Class Codes: H04Q 2213/13389 LAN, internet
• CPC Class Codes: H04W 36/26 by agreed or negotiated communication parameters
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation

Abstract

A method for providing a triggering mechanism in an all-IP wireless communication system. A plurality of communication paths are established between a mobile terminal and a correspondent node to obtain at least one QoS parameter associated with each communication path. Each communication path that provides a predetermined acceptable level of performance is then identified. A handoff trigger is then generated to the communication path that provides the highest level of performance to the mobile terminal.

Claims

1. A method for providing a triggering mechanism in an all-IP wireless communication system, comprising the steps of:

probing a plurality of communication paths between a mobile terminal and a correspondent node to obtain at least one QoS parameter associated with each said communication path;

identifying each said communication path that provides a predetermined acceptable level of performance; and

generating a handoff trigger to said communication path that provides the highest level of performance to said mobile terminal.

2. The method of claim 1, wherein said at least one QoS parameter is selected from a group of QoS parameters consisting of packet delay, packet jitter, packet loss and bandwidth.

3. The method of claim 1, further comprising the step of ranking each said communication path according to a predicted level of performance.

4. The method of claim 3, wherein said ranking step uses a weighted-based ranking.

5. The method of claim 3, wherein said ranking step uses a perception-based ranking.

6. The method of claim 1, wherein said correspondent node comprises a fixed terminal.

7. The method of claim 1, wherein said correspondent node comprises a mobile terminal.

8. The method of claim 1, further comprising the step of considering a cost factor.

9. The method of claim 1, further comprising the step of considering a user preference setting on said mobile terminal.

10. The method of claim 1, further comprising the step of considering load balancing on said all-IP wireless communication system.

11. A method for providing a triggering mechanism in an all-IP wireless communication system, comprising the steps of:

establishing a plurality of end-to-end communication paths between a mobile terminal and a correspondent node;

obtaining at least one QoS parameter for each said end-to-end communication path;

identifying each said end-to-end communication path that satisfies a predetermined acceptable level of performance; and

generating a handoff trigger to said end-to-end communication path that provides the highest QoS to said mobile terminal.

12. The method of claim 11, wherein said at least one QoS parameter is selected from a group of QoS parameters consisting of packet delay, packet jitter, packet loss and bandwidth.

13. The method of claim 11, further comprising the step of ranking each said communication path according to a predicted level of performance.

14. The method of claim 13, wherein said ranking step uses a weighted-based ranking.

15. The method of claim 13, wherein said ranking step uses a perception-based ranking.

16. The method of claim 11, wherein said correspondent node comprises a fixed terminal.

17. The method of claim 11, wherein said correspondent node comprises a mobile terminal.

18. A method for providing triggering mechanism in an all-IP wireless communication system, comprising the steps of:

providing a mobile terminal connected to a plurality of AP/R pairs;

obtaining for each AP/R pair at least one QoS parameter that is defined by an end-to-end communication path between said mobile terminal and a correspondent node;

identifying each said AP/R pair that passes a predefined QoS requirement associated with said QoS parameter;

ranking said AP/R pairs according to a predicted level of performance using said at least one QoS parameter; and

generating a handoff trigger directing said mobile terminal to hand off to said AP/R pair providing a highest QoS to said mobile terminal.

19. The method of claim 18, wherein said at least one QoS parameter is selected from a group of QoS parameters consisting of packet delay, packet jitter, packet loss and bandwidth.

20. The method of claim 18, wherein said ranking step uses a weighted-based ranking.

21. The method of claim 18, wherein said ranking step uses a perception-based ranking.

22. The method of claim 18, wherein said correspondent node comprises a fixed terminal.

23. The method of claim 18, wherein said correspondent node comprises a mobile terminal.