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Design and performance analysis of the Real-Time HCCA scheduler for IEEE 802.11e WLANs

Design and performance analysis of the Real-Time HCCA scheduler for IEEE 802.11e WLANs Claudio Cicconetti *, Luciano Lenzini, Enzo Mingozzi, Giovanni Stea Dipartimento di Ingegneria dell ’ Informazione, University of Pisa, Pisa, Italy Available online 6 February 2007

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Design and performance analysis of the Real-Time HCCA scheduler for IEEE 802.11e WLANs

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  1. Design and performance analysis of the Real-Time HCCA scheduler for IEEE 802.11e WLANs Claudio Cicconetti *, Luciano Lenzini, Enzo Mingozzi, Giovanni Stea Dipartimento di Ingegneria dell’Informazione, University of Pisa, Pisa, Italy Available online 6 February 2007 Advisor : Chao-Lieh Chen professor Speaker : Chun-Ruei Chang

  2. Abstract Real-Time scheduling

  3. 1. Introduction 2. IEEE 802.11e and QoS support 3. Real-Time HCCA (RTH) scheduler 4. Performance evaluation 5. Conclusions Outline

  4. 1. Introduction 2. IEEE 802.11e and QoS support 3. Real-Time HCCA (RTH) scheduler 4. Performance evaluation 5. Conclusions

  5. Introduction • IEEE 802.11e MAC Protocol

  6. HCCA

  7. RTH offline (complex computation) In RTH, offline activities and online activities online (As simple as possible)

  8. 1. Introduction 2. IEEE 802.11e and QoS support 3. Real-Time HCCA (RTH) scheduler 4. Performance evaluation 5. Conclusions

  9. IEEE 802.11e MAC protocol Sample HCCA frame exchange sequence

  10. 1. Introduction 2. IEEE 802.11e and QoS support 3. Real-Time HCCA (RTH) scheduler 4. Performance evaluation 5. Conclusions

  11. 3.1. Enforcement procedure(online) 3.2. Admission control(offline) 3.3. Timetable computation(offline)

  12. Timetable computation Calculated distance Between Ri and Rk Expected arrival time Updating variables Whole unfulfilled capacity

  13. 1. Introduction • 2. IEEE 802.11e and QoS support • 3. Real-Time HCCA (RTH) scheduler • 4. Performance evaluation • 5. Conclusions

  14. Performance evaluation • 4.1. System parameters and analysis tools • 4.2. Traffic models and metrics • 4.3. Admission control analysis

  15. 1. Introduction • 2. IEEE 802.11e and QoS support • 3. Real-Time HCCA (RTH) scheduler • 4. Performance evaluation • 5. Conclusions

  16. Conclusions

  17. Reference • Wikipedia • Google search engine.

  18. schedule

  19. Thanks for your attention!!!

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