臺灣博碩士論文加值系統

近年來，無線區域網路透過聰明天線系統來增加傳輸效能及節省電量是熱門的研究議題。本論文在聰明天線系統上開發高效能的排程演算法，考量不同資料量的連線及干擾對平行傳輸的限制，達到減小整體網路的等待時間及提高網路總流量等目的。

Exploiting smart antenna systems to improve both the network throughput and power efficiency is a promising issue for WLAN. This paper aims at developing a transmission scheduling scheme with smart antenna systems. The proposed schemes take into account the interference restriction and packet sizes for minimizing the average latency and maximizing the network throughput.

Table of Contents
Table of Contents III
List of Figures IV
1. Introduction 1
2. Related Work 4
3. Network Topology and Problem Formation 7
3.1 Network Topology 7
3.2 Problem Formulation 10
4. Scheduling algorithm for Smart antenna Systems (S3 algorithm) 16
4.1 Request Collection Phase 17
4.2 Scheduling Phase 19
4.3 Max Parallel Transmission scheduling and Delay Aware Scheduling 22
4.4 Multi-rate in Intra-cluster 30
4.5 Transmission in inter-cluster 34
5. Performance Evaluation 37
6. Conclusions 39
References 40
Appendix - Conference Version 42

List of Figures
圖 1. MBAA 天線傳播模型 7
圖 2. 以圖1.(b)為例的鄰居位置矩陣 8
圖 3. (hE, hA), (hE, hB)和(hD, hC)在時槽t2進行傳輸之傳輸排程矩陣 9
圖 4. 兩條連線無法同時傳送的例子 12
圖 5. 兩條連線無法同時傳送的例子，深色線表示高速率，淺色線表示低速率 14
圖 6. 時間框架構 16
圖 7. 網路場景和鄰居位置關係矩陣L 18
圖 8. 傳輸需求收集階段之傳輸圖 19
圖 9. 一網路傳輸場景及傳輸資料量矩陣D 19
圖 10. 傳輸排程階段並行傳輸對演算法 21
圖 11. 傳輸排程階段最多並行傳輸演算法 24
圖 12. MaxPTran演算法的排程結果 25
圖 13. 傳輸排程階段最小等待成本演算法 28
圖 14. 最小等待成本的排程結果 29
圖 15. 傳輸排程階段最小等待成本演算法 32
圖 16. 不同傳輸速率下使用DAS-AR的排程 34
圖 17. 兩Clusters間傳輸資料的場景 35
圖 18. Gateway在排程協調前後的傳輸時間圖 36
圖 19. 平均網路效能和資料產生率 37
圖 20. 等待時間和資料產生率 38

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