Method and system for a quality of service mechanism for a wireless network

• US 20060045050A1
• Filed: 11/10/2004
• Published: 03/02/2006
• Est. Priority Date: 08/27/2004
• Status: Abandoned Application

• Current Assignee: Atmel Corporation (Microchip Technology Incorporated)
• Original Assignee: Atmel Corporation (Microchip Technology Incorporated)
• Inventors: Karoubalis, Theodore, Floros, Andreas
• Application Number:
  US10/986,244
• Publication Number:
  US 20060045050A1
• Time in Patent Office: Days
• US Class Current: 370/332
• CPC Class Codes: H04W 28/24 Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
• CPC Class Codes: H04W 48/06 based on traffic conditions
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS

Abstract

A quality of service mechanism for a wireless network includes providing an admission control policy for a quality of service access point (QAP) to manage bandwidth by accepting or denying service to admitted traffic streams of quality of service stations (QSTAs) Further included is renegotiating different access category parameters in the QAP for enhancing performance in the wireless network. An additional aspect also includes monitoring in the QSTAs for enhanced networking to determine whether bandwidth allocation to a specific access category meets QoS requirements under time-varying network conditions and renegotiating admitted access category bandwidth if necessary.

Claims

1. A method for a quality of service mechanism for a wireless network, the method comprising:

providing an admission control policy for a quality of service access point (QAP) to manage bandwidth by accepting or denying service to admitted traffic streams of quality of service stations (QSTAs); and

renegotiating different access category parameters in the QAP for enhancing performance in the wireless network.

2. The method of claim 1 wherein providing an admission control policy further comprises calculating a medium occupancy factor, and accepting a traffic stream requesting service when the calculated medium occupancy factor and a medium time value of the traffic stream requesting service is less than a programmable threshold.

3. The method of claim 2 wherein calculating a medium occupancy factor further comprises calculating a medium occupancy factor for all admitted traffic streams.

4. The method of claim 2 wherein calculating a medium occupancy factor further comprises calculating a medium occupancy factor for all access categories that require admission control.

5. The method of claim 2 wherein renegotiating further comprises renegotiating access category parameters of traffic streams that have been denied service.

6. The method of claim 5 wherein renegotiating further comprises recalculating traffic stream parameters of the traffic stream that has been denied service to meet the programmable threshold.

7. The method of claim 6 further comprising providing a response message with the recalculated traffic stream parameters.

9. The method of claim 1 utilizing a counter for renegotiation and a counter for restoration in each QSTA for every access category that require admission control to determine when a renegotiation limit and restoration limit have been reached to control whether a request for additional admission time or a return of additional admission time occurs.

8. The method of 1 further comprising providing a programmable bandwidth reservation factor to ensure bandwidth is available to access categories not requiring admission control.

10. A system for a quality of service mechanism for a wireless network, the system comprising:

a QBSS (quality of service basic service set), the QBSS including

QSTAs (quality of service stations); and

a QAP (quality of service access point), the QAP providing an admission control policy to manage bandwidth by accepting or denying service to admitted traffic streams of the QSTAs and renegotiating different access category parameters of the QSTAs for enhancing performance of the QBSS.

11. The system of claim 10 wherein the QAP further calculates a medium occupancy factor, and accepts a traffic stream requesting service when the calculated medium occupancy factor and a medium time value of the traffic stream requesting service is less than a programmable threshold.

12. The system of claim 11 wherein the QAP further calculates a medium occupancy factor for all admitted traffic streams.

13. The sytsem of claim 11 wherein the QAP further calculates a medium occupancy factor for all access categories that require admission control.

14. The system of claim 11 wherein the QAP further renegotiates access category parameters of traffic streams that have been denied service.

15. The system of claim 14 wherein the QAP further recalculates traffic stream parameters of the traffic stream that has been denied service to meet the programmable threshold.

16. The system of claim 15 wherein the QAP further provides a response message with the recalculated traffic stream parameters.

17. The system of claim 10 wherein the QAP further provides a programmable bandwidth reservation factor to ensure bandwidth is available to access categories not requiring admission control.

18. The system of claim 10 wherein the QSTAs utilize a counter for renegotiation and a counter for restoration for every access category that require admission control to determine when a renegotiation limit and restoration limit have been reached to control whether a request for additional admission time or a return of additional admission time occurs.

19. A method for a quality of service mechanism for a wireless network, the method comprising:

providing an admission control policy for a quality of service access point (QAP) to manage bandwidth by accepting or denying service to admitted traffic streams of quality of service stations (QSTAs);

renegotiating different access category parameters in the QAP for enhancing performance in the wireless network; and

monitoring for controlled access category renegotiation in the QSTAs for enhanced networking to determine whether bandwidth allocation to a specific access category meets quality of service requirements during the renegotiating.

20. The method of claim 19 wherein monitoring further comprises utilizing a counter for renegotiation and a counter for restoration for every access category that require admission control to determine when a renegotiation limit and restoration limit have been reached to control whether a request for additional admission time or a return of additional admission time occurs.

21. A computer readable medium containing program instructions for a quality of service mechanism for a wireless network, the program instructions for:

providing an admission control policy for a quality of service access point (QAP) to manage bandwidth by accepting or denying service to admitted traffic streams of quality of service stations (QSTAs); and

renegotiating different access category parameters in the QAP for enhancing performance in the wireless network.

22. The computer readable medium of claim 21 wherein providing an admission control policy further comprises calculating a medium occupancy factor, and accepting a traffic stream requesting service when the calculated medium occupancy factor and a medium time value of the traffic stream requesting service is less than a programmable threshold.

23. The computer readable medium of claim 22 wherein calculating a medium occupancy factor further comprises calculating a medium occupancy factor for all admitted traffic streams.

24. The computer readable medium of claim 22 wherein calculating a medium occupancy factor further comprises calculating a medium occupancy factor for all access categories that require admission control.

25. The computer readable medium of claim 22 wherein renegotiating further comprises renegotiating access category parameters of traffic streams that have been denied service.

26. The computer readable medium of claim 25 wherein renegotiating further comprises recalculating traffic stream parameters of the traffic stream that has been denied service to meet the programmable threshold.

27. The computer readable medium of claim 26 further comprising providing a response message with the recalculated traffic stream parameters.

29. The computer readable medium of claim 21 utilizing a counter for renegotiation and a counter for restoration in each QSTA for every access category that require admission control to determine when a renegotiation limit and restoration limit have been reached to control whether a request for additional admission time or a return of additional admission time occurs.

28. The computer readable medium of 21 further comprising providing a programmable bandwidth reservation factor to ensure bandwidth is available to access categories not requiring admission control.