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Design and performance analysis of the Real-Time HCCA scheduler for IEEE 802.11e WLANs Claudio Cicconetti *, Luciano Lenzini, Enzo Mingozzi, Giovanni Stea.

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Presentation on theme: "Design and performance analysis of the Real-Time HCCA scheduler for IEEE 802.11e WLANs Claudio Cicconetti *, Luciano Lenzini, Enzo Mingozzi, Giovanni Stea."— Presentation transcript:

1 Design and performance analysis of the Real-Time HCCA scheduler for IEEE e 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 Outline 1. Introduction 2. IEEE e and QoS support 3. Real-Time HCCA (RTH) scheduler 4. Performance evaluation 5. Conclusions

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

5 Introduction IEEE e MAC Protocol

6 HCCA

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

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

9 IEEE e MAC protocol Sample HCCA frame exchange sequence

10 1. Introduction 2. IEEE e 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

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

14

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

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

17

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

19 Conclusions

20 Reference Wikipedia Google search engine.

21 schedule (11/1~11/7) Dynamic txop( ) (11/8~11/14) dynamic txop scheme, Demo txop,psnr or throughput. Demo txop (11/15~11/21) demo (11/22~11/28)Project done

22 Thanks for your attention!!!


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