利用上升機率分析吞吐量之模擬結果

4.2.1 模擬情境與參數設定

在參數設定部分，我們考慮當 CWmin=32，retry limit=1 時，去觀察傳送機 率與模擬結果的比較。

4.2.2 結果比較

表 4-2 模擬系統結果

τ simulation Proposed Reference [1]

Reference [2]

N=20 0.028789 0.035 0.0398 0.0456 N=25 0.0268615 0.033 0.0382 0.0447 N=30 0.025488 0.0314 0.0369 0.044 N=35 0.0244256 0.0301 0.0359 0.0435 N=40 0.023676 0.0291 0.0351 0.0431

第五章 總結

5.1 總結

在本篇論文中，我們首先提出了一個提升壅塞系統的吞吐量的機制，也 就是說只要當系統壅塞的程度達到臨界值時，只要使用我們所提出的機制 便可有效的提升吞吐量，減少無效的傳輸進而增加通道有效的使用率，當 所參與的站台越多時，我們的作法可改善越多的比例。

接著我們提出了一個以每個空白時槽之後各站台的傳送機率上升為基 礎的分析方式，藉由此分析方式可以精準的算出系統的吞吐量作為無線網 路架設時的參考。

最後我們分析了錯誤機率對於吞吐量的影響並修正，可讓原本設計的 優先權不會因為封包發生錯誤的關係而發生重大改變，進而保證高優先權 資料的服務品質。

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