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

Abstract Real-Time scheduling

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

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

Introduction IEEE 802.11e MAC Protocol

HCCA

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

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

IEEE 802.11e MAC protocol Sample HCCA frame exchange sequence

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

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

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

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

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

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

Conclusions

Reference Wikipedia Google search engine.

schedule 張君睿 林聖凱 (11/1~11/7) Dynamic txop(抓取個參數值所對應關係) 一起整理相關資訊和報告排版 (11/8~11/14) 完成dynamic txop scheme, Demo txop效果,psnr or throughput. Demo txop效果 (11/15~11/21) 修正demo時所產生的問題 提供相關文獻供參考 (11/22~11/28) Project done

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